LORAL SPACE & COMMUNICATIONS LTD
SC 13D, 1997-10-17
RADIOTELEPHONE COMMUNICATIONS
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. )*

                           Orion Network Systems, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                          Common Stock, par value $.01
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    68628K104
                                 (CUSIP Number)

         Eric J. Zahler, Vice President, Secretary and General Counsel,
                       Loral Space & Communications Ltd.,
                   600 Third Avenue, New York, New York 10016
                                 (212) 697-1105
- --------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                 October 7, 1997
            --------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box.

Note: Six copies of this statement, including all exhibits, should be filed with
the Commission. See Rule 13d-l(a) for other parties to whom copies are to be
sent.         [ ]

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).




<PAGE>






                                  SCHEDULE 13D

- ---------------------                                  -----------------------  
CUSIP No. 68628K104                                     Page 2 of 8 Pages
- ---------------------                                  -----------------------  
                                                                                

- ----------- --------------------------------------------------------------------
    1       NAME OF REPORT PERSON
            S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

            Loral Space & Communications Ltd.

- ----------- --------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                    
                                                               (a) [ ]          
                                                               (b) [X]
- ----------- --------------------------------------------------------------------
    3       SEC USE ONLY


- ----------- --------------------------------------------------------------------
    4       SOURCE OF FUNDS*

            00
- ----------- -------------------------------------------------------------------
    5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
            ITEMS 2(d) or 2(e)                 [ ]

- ----------- --------------------------------------------------------------------
    6       CITIZENSHIP OR PLACE OF ORGANIZATION

            Bermuda
- ---------- ---------- --------- ------------------------------------------------
                           7      SOLE VOTING POWER
    NUMBER OF SHARES
      BENEFICIALLY                588,235
      OWNED BY EACH
       REPORTING      --------- ------------------------------------------------
      PERSON WITH
                          8      SHARED VOTING POWER

                                 10,488,038
                      --------- ------------------------------------------------
                          9      SOLE DISPOSITIVE POWER

                                588,235
                      --------- ------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                10,488,038
- ----------- --------------------------------------------------------------------
    11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

            11,076,273
- ----------- --------------------------------------------------------------------
    12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
            SHARES*                       [ ]

- ----------- --------------------------------------------------------------------
    13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            44.7%
- ----------- --------------------------------------------------------------------
    14      TYPE OF REPORTING PERSON*

            CO
- ----------- --------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
       INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7      
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>



                                  SCHEDULE 13D

 ---------------------                                  ----------------------- 
CUSIP No. 68628K104                                     Page 3 of 8 Pages
- ---------------------                                   ----------------------- 

 ----------- -------------------------------------------------------------------
     1       NAME OF REPORT PERSON
             S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

             Loral Satellite Corporation

 ----------- -------------------------------------------------------------------
     2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a) [ ]     
                                                                    (b) [X]
                                                                                
 
 ----------- -------------------------------------------------------------------
     3       SEC USE ONLY


 ----------- -------------------------------------------------------------------
     4       SOURCE OF FUNDS*

             00
 ----------- -------------------------------------------------------------------
     5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
             ITEMS 2(d) or 2(e)                 [ ]

 ----------- -------------------------------------------------------------------
     6       CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
 --------------------- -------- ------------------------------------------------
                          7     SOLE VOTING POWER
    NUMBER OF SHARES
     BENEFICIALLY               588,235
    OWNED BY EACH
     REPORTING         -------- ------------------------------------------------
    PERSON WITH           8     SHARED VOTING POWER

                                10,488,038
                       -------- ------------------------------------------------
                          9     SOLE DISPOSITIVE POWER

                                588,235
                       -------- ------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                10,488,038
 ----------- -------------------------------------------------------------------
     11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

             11,076,273
 ----------- -------------------------------------------------------------------
     12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
             SHARES*                      [ ]

 ----------- -------------------------------------------------------------------
     13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

             44.7%
 ----------- -------------------------------------------------------------------
     14      TYPE OF REPORTING PERSON*

             CO
 ----------- -------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
       INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7       
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.





                                                       


<PAGE>


Explanatory Note:
- ----------------

          As a result of executing a Principal Stockholder Agreement
dated as of October 7, 1997 (the "Agreement") with the stockholders listed on
Exhibit A to the Agreement (the "Orion Stockholders"), Loral Space &
Communications Ltd. ("Parent" or "Loral") and Loral Satellite Corporation, a
wholly owned subsidiary of Parent ("Sub") may be deemed, for the purposes of
Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act"), to
have formed a "group" with the Orion Stockholders.

          The information regarding the Orion Stockholders contained in
this Statement on Schedule 13D is provided to the best knowledge of Parent and
Sub and, unless otherwise indicated, is based on information provided to Parent
and Sub by the Orion Stockholders.

Item 1.  Security and Issuer
- -------  -------------------

          This statement on Schedule 13D (this "Statement") relates to
shares of Common Stock, $.01 par value per share (the "Common Stock"), of Orion
Network Systems, Inc., a Delaware corporation (the "Issuer"), and is being filed
by Loral. The principal executive offices of the Issuer are located at 2440
Research Boulevard, Suite 400, Rockville, MD 20850.

Item 2.  Identity and Background
- -------  ------------------------

          (a) - (c) and (f). This Statement is filed by and on behalf of
Loral, a Bermuda company and Sub, a Delaware corporation. Loral is engaged in
the space and telecommunications business and has its principal office at 600
Third Avenue, New York, New York 10016. Sub is organized under the laws of the
State of Delaware, and its principal business address is 600 Third Avenue, New
York, New York 10016. Sub was organized for the purpose of consummating the
transactions contemplated under the Merger Agreement (as defined below).

         The name, citizenship, business address, position and present principal
occupation of each of the executive officers and directors of Loral are set
forth in Schedule I of this Statement and the position and principal occupation
of the directors and executive officers of Sub (together with the executive
officers of Loral, the "Executive Officers and Directors") are set forth in
Schedule II of this Statement.

         None of the other persons named in Schedule I and Schedule II, to the
best knowledge of Loral and Sub, beneficially owns for purposes of Section 13(d)
of the Securities Exchange Act of 1934 ("Beneficially Owns") shares of Common
Stock.

         (d) and (e). During the last five years, neither Loral or Sub, nor, to
the best knowledge of Loral and Sub, any of the persons named in Schedule I and
Schedule II to this Statement, has or have been (i) convicted in a criminal
proceeding (excluding traffic violations or similar misdemeanors) or (ii) a
party to a civil proceeding of a judicial or administrative body of competent
jurisdiction and as a result of such proceeding was or is subject to a judgment,
decree or final order enjoining future violations of, or prohibiting or





                                   - 4 of 8-
<PAGE>


                                    
mandating activities subject to, United States federal or state securities     
laws or finding any violations with respect to such laws.

Item 3.  Source and Amount of Funds or Other Considerations
- -------  --------------------------------------------------

         Pursuant to the Agreement, a copy of which is attached as Exhibit 1
hereto, Parent and Sub have an option (the "Option"), exercisable only in
certain circumstances which have not yet occurred, to acquire from the Orion
Stockholders (i) 7,596,815 shares of Common Stock (after giving effect to the
conversion of the Issuer's Convertible Junior Subordinated Debentures due
February 1, 2012 (the "Debentures") into shares of Common Stock, as required by
the Agreement), (ii) 707,880 shares of the Issuer's Series A 8% Cumulative
Redeemable Convertible Preferred Stock ("Series A Stock"), (iii) 196,433 shares
of the Issuer's Series B 8% Cumulative Redeemable Convertible Preferred Stock
("Series B Stock"), and (iv) 3,007,770 shares of the Issuer's Series C 6%
Cumulative Redeemable Convertible Preferred Stock (the "Series C Stock, and
together with the Series A Stock and Series B Stock, the "Preferred Stock"). The
Preferred Stock is convertible into 3,911,494 shares of Common Stock. In
addition, each Orion Stockholder has agreed to vote its Common Stock and
Preferred Stock (the "Shares") in favor of the transactions contemplated by the
Merger and against certain actions that may be adverse to the consummation of
the Merger, and has agreed to appoint Parent and Sub as its attorney and proxy
(the "Proxy") for such purpose. The Shares represent approximately 32.6% of the
voting stock of the Issuer outstanding as of September 30, 1997.

         Upon exercise of the Option, each Orion Stockholder shall receive the
number of fully paid and nonassessable shares (as adjusted in accordance with
the Merger Agreement) of Common Stock of Parent, $.01 par value per share
("Parent Shares"), equal to the number of Shares to be purchased by Parent
multiplied by the Exchange Ratio (as defined in the Merger Agreement), together
with the associated rights (the "Rights") under Parent's Rights Agreement
("Parent Rights Plan") dated as of March 27, 1996, between Parent and the Bank
of New York, as Rights Agent. Execution and delivery of the Agreement by the
Orion Stockholders was a condition to the execution of the Agreement and Plan of
Merger, dated as of October 7, 1997, by and among Parent, Sub and the Issuer
(the "Merger Agreement"), a copy of which is attached as Exhibit 2 hereto.

         In addition, Space Systems/Loral, Inc. ("SS/L"), a wholly-owned
subsidiary of Loral, Beneficially Owns, and has sole voting and dispositive
power over 588,235 shares of Common Stock, as reported on the Schedule 13G filed
by SS/L on January 20, 1997 (the "Schedule 13G").

         As a result of the Option and the Common Stock held by SS/L, Parent and
Sub Beneficially Own an aggregate of 11,076,273 shares of Common Stock, or 44.7%
of the Common Stock outstanding (after giving effect to the exercise of the
Option (including the conversion of the Debentures into shares of Common Stock,
as required by the Agreement) and conversion of the Preferred Stock obtained
thereby and including the shares of Common Stock held by SS/L), or 35.3% (as a
result of the Proxy and the Common Stock held by SS/L, excluding the shares of
Common Stock underlying the Debentures).




                                   - 5 of 8-
<PAGE>


Item 4.  Purpose of Transaction.
- -------  -----------------------

         On October 7, 1997, Parent, Sub and the Orion Stockholders entered into
the Agreement. Pursuant to the terms of the Agreement, each Orion Stockholder
granted Parent and Sub an Option to purchase all of the Shares held by such
Orion Stockholder on the date of exercise of the Option ( including shares of
Common Stock underlying the Debentures, which are required to be converted into
Common Stock prior to the exercise of the Option) for the number of fully paid
and nonassessable Parent Shares equal to the number of Shares to be purchased by
Parent multiplied by the Exchange Ratio (as defined in the Merger Agreement),
together with the Rights. Pursuant to the Agreement, Parent and Sub have the
right to acquire all of the Shares Beneficially Owned by the Orion Stockholders
(with certain exceptions indicated in the footnotes to Exhibit A to the
Agreement) in exchange for Parent Shares and the Rights. In addition, each Orion
Stockholder has agreed to vote in favor of the transactions contemplated by the
Merger, and against certain actions that may be adverse to the consummation of
the Merger, and has agreed to appoint Parent and Sub as its Proxy for such
purpose. The Shares represent approximately 32.6% of the voting stock of the
Issuer outstanding as of September 30, 1997.

         The purpose of the transactions under the Agreement is to enable Parent
and Sub to consummate the transactions contemplated under the Merger Agreement.
Pursuant to the terms of the Merger Agreement, Sub will merge (the "Merger")
with and into the Issuer, and the Issuer will be the surviving corporation. The
Directors of Merger Sub immediately prior to the consummation of the Merger
shall be the initial Directors of the surviving corporation.

         Upon consummation of the Merger, the Shares would cease to be
authorized to be quoted on the Nasdaq National Market and would become eligible
for termination of registration pursuant to Section 12(g)(4) of the Exchange
Act.

         Except as otherwise set forth in this Item 4, neither Parent nor Sub
has any present plans or proposals which relate to or would result in (i) the
acquisition by any person of additional securities of the Issuer, or the
disposition of securities of the Issuer; (ii) an extraordinary corporate
transaction, such as a merger, reorganization or liquidation, involving the
Issuer or any of its subsidiaries; (iii) a sale or transfer of a material amount
of assets of the Issuer or any of its subsidiaries; (iv) any change in the
present Board of Directors or management of the Issuer; (v) any material change
in the present capitalization or dividend policy of the Issuer; (vi) any other
material change in the Issuer's charter, by-laws or instruments corresponding
thereto or other actions which may impede the acquisition of control of the
Issuer by any person; (viii) causing the Shares to cease to be authorized to be
quoted or the National Market System of the National Association of Securities
Dealers Automated Quotation System; (ix) the Shares becoming eligible for
termination of registration pursuant to Section 12(g)(4) of the Exchange Act; or
(x) any action similar to any of those actions set forth in this Paragraph.






                                   - 6 of 8-
<PAGE>



Item 5.  Interest in Securities of Issuer.
- -------  ---------------------------------


         (a) and (b). Parent and Sub have an Option, exercisable only
in certain circumstances which have not yet occurred, to acquire from the Orion
Stockholders 3,571,429 shares of Common Stock (after giving effect to the
conversion of the Debentures into shares of Common Stock, as required by the
Agreement) and shares of Preferred Stock convertible into 3,911,494 shares of
Common Stock. Based upon the representations of the Issuer contained in the
Merger Agreement, there were 11,675,436 shares of Common Stock issued and
11,406,162 shares outstanding as of September 30, 1997. If Parent or Sub were to
exercise the Option and convert the Preferred Stock obtained thereby into shares
of Common Stock, Parent or Sub, as the case may be, would Beneficially Own
11,076,273 shares of Common Stock, equal to 43.4% of the outstanding Common
Stock (after giving effect to such exercise and conversion and including shares
of Common Stock held by SS/L). When and if Parent acquires the Shares subject to
the Option, Parent or Sub, as the case may be, would have sole voting and
investment power with respect thereto.

         Pursuant to the Agreement, each Orion Stockholder has agreed to vote
its Shares at any meeting of the Issuer's stockholders or any adjournment or
postponement thereof or pursuant to any consent in lieu of a meeting or
otherwise, among other things, in favor of the Merger Agreement and against any
proposal for any recapitalization, merger (other than the Merger), sale of
assets or other business combination between the Issuer and any person or entity
(other than Parent or Sub), any amendment to the Company's or its Subsidiaries'
charters or By-laws or any other action which is intended to, or could
reasonably be expected, to impede, interfere with, delay, postpone, or
materially adversely affect the Merger and the transactions contemplated by the
Merger Agreement. In addition, each of the Orion Stockholders have agreed to
appoint Parent and Sub as its Proxy. The Shares represent approximately 32.6% of
the voting stock of the Company outstanding as of September 30, 1997.
Accordingly, Loral and Sub Beneficially Own (without regard to the Option and
excluding the shares of Common Stock underlying the Debentures), as a result of
the Proxy and the Common Stock by SS/L (as described below), 35.3% of the voting
stock of the Issuer outstanding as of September 30, 1997.

         SS/L, a wholly-owned subsidiary of Loral, Beneficially Owns,
and has sole voting and dispositive power over 588,235 shares of Common Stock,
as reported on the Schedule 13G.

         Other than the Option, Proxy and the Common Stock held by SS/L, all as
described above, neither Parent, Sub nor any of their respective subsidiaries
Beneficially Owns any Shares. To the best knowledge of Parent and Sub, none of
Parent's or Sub's Executive Officers and Directors Beneficially Own any Shares.
Parent and Sub disclaim Beneficial Ownership of the Shares and, notwithstanding
anything to the contrary contained in this Schedule 13D, and in accordance with
Rule 13d-4 promulgated under the Act, the filing of this Schedule 13D shall not
be construed as an admission that Parent or Sub is the Beneficial Owner of the
Shares.

         (c) There have been no transactions in the Common Stock or, to the best
knowledge of Parent and Sub, by any of Parent's or Sub's Executive Officers and
Directors, during the past 60 days.





                                   - 7 of 8-
<PAGE>




         (d) To the knowledge of Parent and Sub, the right to receive dividends
with respect to the Common Stock to which this Schedule 13D relates, and the
power to direct the receipt of dividends from, or the proceeds of the sale of,
such Common Stock held by each of the Orion Stockholders are held by such Orion
Stockholder as reflected on Exhibit A to the Agreement.

         (e) Not applicable.

Item 6.  Contracts, Arrangements, Understandings or Relationships with 
         Respect to Securities of the Issuer.
- ------   -------------------------------------------------------------


         Other than the Merger Agreement described in response to Item 4 and the
Agreement described in response to Item 3 and the transactions contemplated
thereby, there are no contracts, arrangements, understandings or relationships
between Parent or Sub and any other person, or, to the best knowledge of Parent
and Sub, among any of Parent's or Sub's Executive Officers and Directors or
between any of Parent's or Sub's Executive Officers and Directors and any other
person, with respect to the Common Stock.

Item 7.  Material to Be Filed as Exhibits.
- -------  ---------------------------------

Exhibit 1    Principal Stockholder Agreement dated as of October 7, 1997

Exhibit 2    Agreement and Plan of Merger dated as of October 7, 1997

Exhibit 3    Joint Filing Agreement dated as of October 17, 1997





                                   - 8 of 8-
<PAGE>








                                    SIGNATURE

         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated:  October 17, 1997


                                            LORAL SPACE & COMMUNICATIONS LTD.

                                            By:/s/ Eric J. Zahler
                                               ---------------------------------
                                               Name:  Eric J. Zahler
                                               Title: Vice President, Secretary 
                                                        and General Counsel

                                            LORAL SATELLITE CORPORATION

                                            By:/s/ Eric J. Zahler
                                               ---------------------------------
                                               Name:  Eric J. Zahler
                                               Title: Vice President, Secretary 
                                                        and General Counsel





                                   - 9 of 8-
<PAGE>




                                                            


                                                                 SCHEDULE I
                                                                                

         Set forth below is the name, position, present principal occupation and
amount of beneficial interest in the Common Stock, if any, of the directors and
executive officers of Loral Space & Communications Ltd. Except as set forth
below, the business address of each of these persons is c/o Loral Space &
Communications Ltd., 600 Third Avenue, New York, New York 10016. Each such
person is a citizen of the United States.

                Directors and Executive Officers of Loral Space &
                -------------------------------------------------
                               Communications Ltd.
                               -----------------

                                                 
Name and Position in                          Number of Shares     
 addition to Present   Present Principal      Owned and Aggregate   Percentage
Principal Occupation    Occupation             Purchase Price         Interest
                       -----------------      -------------------   ----------- 
                                                               
Bernard L. Schwartz   Chairman of the Board
                      of Directors and 
                      Chief  Executive               0                 N/A
                      Officer

Michael B. Targoff    President and Chief 
                      Operating Officer              0                 N/A


Howard Gittis,        Vice Chairman and Chief        0                 N/A
Director              Administrative Officer
                      of MacAndrews
                      & Forbes Holdings, Inc.
                      35 E. 62nd St.
                      New York, NY  10021

Robert B. Hodes, 
Director              Counsel to                     0                  N/A
                      Willkie Farr & Gallagher
                      153 East 53rd St.
                      New York, NY  10022

Gershon Kekst,        President of Kekst and 
Director                  Company, Inc.              0                  N/A
                      437 Madison Ave.
                      New York, NY  10022

Charles Lazarus,      Chairman and Director of 
Director              Toys "R" Us,  Inc.             0                  N/A
              
                      461 From Road
                      Paramus, NJ  07652



                                    

                                     

                                      I-1
<PAGE>




Name and Position in                          Number of Shares     
 addition to Present   Present Principal      Owned and Aggregate   Percentage
Principal Occupation    Occupation             Purchase Price         Interest
- --------------------   -----------------      -------------------   ----------- 
 

Malvin A. Ruderman,    Professor of Physics,            0               N/A
Director               Columbia University
                       29 Washington Sq. West
                       New York, NY  10011

E. Donald Shapiro,     Professor of Law                 0               N/A
Director               New York Law School
                       57 Worth Street
                       New York, NY  10013

Arthur L. Simon,       Independent consultant           0               N/A
Director               971 Haverstraw Road
                       Suffern, NY  10901

Thomas J. Stanton,     Chairman Emeritus of National    0               N/A
Jr., Director          Westminster Bancorp NJ
                       240 South Mountain Ave.
                       Montclair, NJ  07042

Daniel Yankelovich,    Chairman of DYG, Inc.            0               N/A
Director               21 Holiday Point Rd.
                       Sherman, CT  06784

Laurence D. Atlas      Vice President, Government       0               N/A
                       Relations-Telecommunications

Robert E. Berry        Senior Vice President            0               N/A

Jeanette H. Clonan     Vice President, Communications   0               N/A
                       and Investor Relations

Michael P. DeBlasio    Senior Vice President and        0               N/A
                       Chief Financial Officer

Stephen L. Jackson     Vice President, Administration   0               N/A

Jerald A. Lindfelt     Vice President, Business         0               N/A
                       Operations

Nicholas C. Moren      Vice President and Treasurer     0               N/A




                                      I-2
<PAGE>




Name and Position in                          Number of Shares     
 addition to Present   Present Principal      Owned and Aggregate   Percentage
Principal Occupation    Occupation             Purchase Price         Interest
- --------------------   -----------------      -------------------   ----------- 
 

Harvey B. Rein           Vice President                 0              N/A
                         and Controller  

Thomas B. Ross           Vice President,                0              N/A
                         Government Relations

Eric J. Zahler           Vice President, General        0             N/A
                          Counsel and Secretary




                                      I-3
<PAGE>




                                                             




                                                                   SCHEDULE II

         Set forth below is the name, position, present principal occupation and
amount of beneficial interest in the Common Stock, if any, of the directors and
executive officers of Loral Satellite Corporation. Except as set forth below,
the business address of each of these persons is c/o Loral Space &
Communications Ltd., 600 Third Avenue, New York, New York 10016. Each such
person is a citizen of the United States.

                Directors and Executive Officers of Loral Space &
                --------------------------------------------------
                               Communications Ltd.
                              ---------------------
 
 
Name and Position in                          Number of Shares     
 addition to Present   Present Principal      Owned and Aggregate   Percentage
Principal Occupation    Occupation             Purchase Price         Interest
- --------------------   -----------------      -------------------   ----------- 
                                                                              
Bernard L. Schwartz,    Chairman of the Board          0               N/A
Director                and Chief Executive 
                        Officer

Michael B. Targoff,     President                      0               N/A
Director

Michael P. DeBlasio     Senior Vice President          0               N/A

Eric J. Zahler,         Vice President and             0               N/A
Director                Secretary

Nicholas C. Moren       Vice President and             0               N/A
                        Treasurer

Harvey B. Rein          Vice President and             0               N/A
                        Controller



<PAGE>






                                  EXHIBIT INDEX


Exhibit 1         Principal Stockholder Agreement dated October 7, 1997

Exhibit 2         Agreement and Plan of Merger dated October 7, 1997

Exhibit 3         Joint Filing Agreement dated as of October 17, 1997




<PAGE>



                         PRINCIPAL STOCKHOLDER AGREEMENT


          THIS PRINCIPAL  STOCKHOLDER  AGREEMENT,  dated as of October 7th, 1997
(this  "Agreement")  among Loral Space & Communications  Ltd., a Bermuda company
("Acquiror"),  Loral Satellite  Corporation,  a Delaware  corporation,  a wholly
owned subsidiary of Acquiror  ("Sub"),  Orion Network Systems,  Inc., a Delaware
corporation  ("Company"),  and  each  other  person  and  entity  listed  on the
signature pages hereof (each, a "Stockholder").

          WHEREAS,  as of the date hereof,  each Stockholder  holds of record or
beneficially  owns the  number of shares of common  stock,  $.01 par value  (the
"Common  Stock") of the Company set forth  opposite such  Stockholder's  name on
Exhibit A;

          WHEREAS,  as of the date  hereof,  certain  Stockholders  also hold of
record or  beneficially  own the number of shares of the  Company's  Series A 8%
Cumulative Redeemable Convertible Preferred Stock ("Series A Shares"),  Series B
8% Cumulative Redeemable Convertible Preferred Stock ("Series B Shares"), and/or
Series C 6% Cumulative Redeemable Convertible Preferred Stock ("Series C Shares,
and  together  with the  Series A Shares  and  Series B Shares,  the  "Preferred
Stock"),  set forth  opposite  such  Stockholder's  name on  Exhibit A (all such
Preferred Stock, together with all shares of Common Stock currently held and all
shares  of  Common  Stock  and  Preferred  Stock   hereafter   acquired  by  the
Stockholders  (including but not limited to shares acquired upon the exercise of
options,  warrants or rights or the  conversion  or exchange of  convertible  or
exchangeable securities) being referred to herein as the "Shares");

          WHEREAS,  as of the date hereof,  certain  Stockholders  also hold the
Company's  Convertible Junior Subordinated  Debentures due February 1, 2012 (the
"Debentures") in the principal amount set forth opposite such Stockholder's name
on Exhibit A;

          WHEREAS,  Acquiror, Sub and the Company have entered into an Agreement
and  Plan of  Merger  dated  as of the  date  hereof  (the  "Merger  Agreement";
capitalized  terms used but not  otherwise  defined in this  Agreement  have the
meanings assigned to such terms in the Merger Agreement),  which provides,  upon
the terms and subject to the conditions set forth therein, for the merger of Sub
with and into the Company (the "Merger");


                                       1
<PAGE>


          WHEREAS,  as a condition  to the  willingness  of Acquiror  and Sub to
enter into the Merger  Agreement and in  furtherance  of the  acquisition of the
Company by Acquiror, Acquiror and Sub have required that the Stockholders agree,
and in order to induce Acquiror and Sub to enter into the Merger Agreement, each
Stockholder has agreed, severally and not jointly, to enter into this Agreement.

          NOW,  THEREFORE,  in  consideration  of  the  foregoing  premises  and
agreements contained herein, the parties hereto agree as follows:

                                   Article I.

                   GRANT OF OPTION AND EXERCISE; TRANSFER AND
                          VOTING OF SHARES; DEBENTURES

          Section 1.1. Grant of Option.

          Subject to the terms and conditions set forth herein, each Stockholder
hereby  severally and not jointly grants to Acquiror an irrevocable  option (the
"Option") to purchase all (but not less than all) of such  Stockholder's  Shares
held on the date of option  exercise (and to require the  conversion of all (but
not less than all) of such  Stockholder's  Debentures  into  Shares  immediately
prior to the Closing  (defined in Section  1.3 below)  hereunder,  and upon such
conversion such Shares shall be subject to the Option  hereunder) for the number
of fully paid and nonassessable Acquiror Shares (as adjusted pursuant to Section
2.5 of the Merger  Agreement)  equal to the number of Shares to be  purchased by
Acquiror  multiplied by the Exchange Ratio  (calculated using the Notice Date as
if it were the "Closing Date" (as defined in the Merger  Agreement) for purposes
of calculating the  Determination  Price),  together with the associated  rights
under Acquiror's Rights Agreement ("Acquiror Rights Plan") dated as of March 27,
1996 between Acquiror and The Bank of New York, as Rights Agent  (together,  the
"Purchase Price").

          Section 1.2. Exercise of Option.

          (a) Provided that neither Acquiror nor Sub shall be in material breach
of their respective  agreements or covenants  contained in the Merger Agreement,
Acquiror may exercise the Option, in whole (but not in part) with respect to all
of the Shares of all of the Stockholders covered hereby (but not less than all),
at any time  following the  occurrence of any event  described in Section 1.9 (a
"Purchase Event"); provided that, the Option shall terminate



                                       2
<PAGE>


and be of no further  force and  effect  upon the  earliest  to occur of (i) the
Effective Time, (ii) June 30, 1998, or (iii) termination of the Merger Agreement
by Acquiror or Sub in accordance with the terms thereof.

          (b) If  Acquiror  exercises  the Option  hereunder  (except  following
termination of the Merger Agreement by the Company) (i) neither Acquiror nor Sub
shall  terminate the Merger  Agreement  under any  circumstances  except Section
9.1(a)  (with  approval  of the  Company)  and  Section  9.1(c)  of  the  Merger
Agreement,  (ii) all  conditions set forth in Section 8.2 and Section 8.3 (other
than Section  8.2(c) and Section  8.3(c),  but it is understood  and agreed that
receipt of an initial  FCC order shall be deemed to satisfy  Section  8.2(c) and
Section 8.3(c) for this purpose) of the Merger  Agreement shall be deemed waived
by each of Acquiror, Sub, and the Company, respectively,  (iii) Acquiror and Sub
shall each use their  reasonable  best efforts to consummate  the Merger (or the
Exchange Offer as applicable) as promptly as  practicable,  except to the extent
that (and so long as)  consummation  of the  Merger  (or the  Exchange  Offer as
applicable)  would violate  applicable  law (and if  consummation  of the Merger
would  violate  applicable  law, but  conducting  the  Exchange  Offer would not
violate  applicable  law,  Acquiror shall conduct the Exchange Offer pursuant to
the  requirements  of  Section  7.15  (including  Section  7.15(g)),  except  as
otherwise provided in this paragraph rather than the Merger).

          (c) If following  the  exercise of the Option there is an  Acquisition
Proposal  pending prior to consummation of the Merger or the Exchange Offer, and
such Acquisition  Proposal  includes a per Share price higher than the per Share
consideration  to be paid in the Merger or the Exchange  Offer as  applicable (a
"Topping  Bid"),  Acquiror  shall have the right to tender the Shares  purchased
under the Option into the Topping Bid or  otherwise  support the Topping Bid and
realize value therefrom,  and Acquiror's  obligations under the Merger Agreement
(and  Section 1.6 hereof)  shall (if not  previously  terminated)  be  suspended
during the pendency of the Topping Bid; provided, however, that such obligations
shall cease to be  suspended  if the Topping Bid ceases to be pending  without a
majority of the Shares having been acquired pursuant to the Topping Bid.

          Section 1.3. Closing Date.

          In the event Acquiror wishes to exercise the Option, which may only be
exercised  in whole (but not in part),  with respect to all of the Shares of all
of the


                                      3
<PAGE>


Stockholders  covered hereby it shall send to each  Stockholder a written notice
(the date of which being herein  referred to as the "Notice Date")  specifying a
place and date not earlier  than five  business  days nor later than 20 Business
Days from the Notice Date for the closing of such purchase (the "Closing Date");
provided  that if the closing of the  purchase  and sale  pursuant to the Option
(the  "Closing")  cannot be consummated  by reason of any  applicable  judgment,
decree, order, law or regulation, Acquiror shall use its commercially reasonable
efforts to resolve  such matters and close as promptly as  practicable.  Without
limiting the foregoing,  if prior  notification to or approval of any regulatory
authority  is  required  in  connection  with such  purchase,  Acquiror  and, if
applicable, a Stockholder shall promptly file the required notice or application
for  approval  and shall  expeditiously  process the same (and such  Stockholder
shall  cooperate  with Acquiror in the filing of any such notice or  application
and the obtaining of any such approval).

          Section 1.4. Payment and Delivery of Certificates.

          (a) Subject to the terms and conditions of this Agreement, in reliance
on the representations,  warranties and covenants of each Stockholder  contained
herein  and in full  payment  for the  Shares,  at the  Closing,  Acquiror  will
deliver,   or  cause  to  be  delivered,   to  each  Stockholder,   certificates
representing  the Acquiror Shares to be paid pursuant to Section 1.1 duly issued
to each Stockholder,  together with any necessary stock transfer stamps properly
affixed.  Subject to the terms and conditions in this Agreement,  in reliance on
the  representations,  warranties and covenants of the Acquiror contained herein
and in the Merger Agreement,  at the Closing,  the Stockholders shall deliver to
Acquiror  certificates  representing  the  Shares  sold by the  Stockholders  to
Acquiror at the Closing,  duly endorsed in blank or  accompanied by stock powers
duly executed by the Stockholders in blank, in proper form for transfer.

          (b) No  certificates  or scrip  representing  less  than one  share of
Acquiror Shares shall be issued upon the exercise of the Option.  In lieu of any
such fractional  share,  each Stockholder who would otherwise have been entitled
to a fraction of a share of Acquiror Shares upon exercise of the Option shall be
paid  at the  Closing  cash  (without  interest)  in an  amount  equal  to  such
Stockholder's  fractional part of a share of Acquiror  Shares  multiplied by the
last  reported  sale price of Acquiror  Shares,  as reported on the NYSE, on the
Closing Date.



                                       4
<PAGE>


          Section 1.5. Legends.

     (a) Each  Stockholder  shall instruct the Company to cause each certificate
of any Stockholder evidencing the Shares to bear a legend in the following form:

     THE SHARES  REPRESENTED BY THIS  CERTIFICATE MAY NOT BE SOLD,  EXCHANGED OR
     OTHERWISE  TRANSFERRED  OR DISPOSED OF EXCEPT IN COMPLIANCE  WITH THE TERMS
     AND CONDITIONS OF THE PRINCIPAL  STOCKHOLDER  AGREEMENT DATED AS OF OCTOBER
     7, 1997 AS IT MAY BE  AMENDED,  AMONG LORAL  SPACE &  COMMUNICATIONS  LTD.,
     LORAL SATELLITE CORPORATION, ORION NETWORK SYSTEMS, INC. ("ISSUER") AND THE
     REGISTERED  HOLDER OF THIS  CERTIFICATE,  A COPY OF WHICH IS ON FILE AT THE
     PRINCIPAL EXECUTIVE OFFICES OF THE ISSUER.

     (b) In  the  event  that  the  Shares  shall  cease  to be  subject  to the
restrictions  on transfer set forth in this Agreement,  the Company shall,  upon
the  written  request  of  the  holder  thereof,  issue  to  such  holder  a new
certificate  evidencing  such  Shares  without  the legend  required  by Section
1.5(a).

     Section 1.6. Voting Agreement; Agreement to Tender.

                  (a) Each  Stockholder  and Acquiror  hereby  severally and not
jointly  agrees  that  from  the  date  hereof  to the  earlier  to occur of the
termination of the Merger Agreement or the Effective Time, at any meeting of the
stockholders of the Company, however called, and in any action by consent of the
stockholders  of the  company,  such  Stockholder  and  Acquiror  shall vote the
Shares:  (i) in favor of the Merger,  the Merger Agreement (as amended from time
to  time)  and  the   transactions   contemplated   by  the   Merger   Agreement
(collectively,  the "subject  transactions"),  (ii) against any proposal for any
recapitalization,  merger  (other  than the  Merger),  sale of  assets  or other
business  combination  between the Company and any person or entity  (other than
Acquiror or Sub) or any other action or agreement  that would result in a breach
of any covenant or any other  obligation  or agreement of the Company  under the
Merger  Agreement or which would result in any of the  conditions  to the Merger
Agreement not being  fulfilled and (iii)  against the following  actions  (other
than pursuant to the terms of this Agreement or the Merger  Agreement):  (A) any
extraordinary  corporate transaction,  such as a merger,  consolidation or other
business  combination  involving the Company or any of it Subsidiaries;  (B) any
sale, lease or transfer by the Company of a material amount of assets (including
stock)  of  the  Company  or  any  of  its  Subsidiaries;  or a  reorganization,
restructuring, recapitalization, special dividend, dissolution or liquidation of
the  Company or any of its  Subsidiaries;  or (C)(1)



                                       5
<PAGE>


any change in a majority of the persons who constitute the board of directors of
the  Company  or  any  of its  Subsidiaries;  (2)  any  change  in  the  present
capitalization of the Company or any of its Subsidiaries  including any proposal
to sell a substantial equity interest in the Company or any of its Subsidiaries;
(3)  any  amendment  to the  Company  or any of its  Subsidiaries'  charters  or
By-laws;  (4)  any  other  change  in the  Company  or any of its  Subsidiaries'
corporate  structure or business;  or (5) any other action which, in the case of
each of the matters referred to in clauses (C)(1), (2), (3) or (4), is intended,
or could reasonably be expected, to impede,  interfere with, delay, postpone, or
materially adversely affect the Merger and the transactions contemplated by this
Agreement.

     (b) Each Stockholder and Acquiror  severally and not jointly agrees that it
shall not enter into any agreement or understanding the effect of which would be
inconsistent  with or  violative  of the  provisions  and  agreements  contained
herein,  including in this Section 1.6.  Further,  each Stockholder and Acquiror
severally and not jointly  agrees that it will, if the Board of Directors of the
Company fails or refuses (other than as a result of breach by Acquiror or any of
its  Affiliates  of the  Merger  Agreement  or  because  the  Acquiror  and  its
Affiliates  will not or cannot  satisfy  the  conditions  precedent  thereto) to
submit the subject transactions to the Company's  stockholders,  vote all Shares
held of record or  beneficially  owned by it to (i) call or cause to be called a
special meeting of stockholders of the Company (or effect a written  consent) to
remove  the  directors  of the  Company  who have so  failed or  refused,  or to
increase  the  size of the  Board  of  Directors  and  elect a  majority  of new
directors who will submit the subject  transactions  to the  stockholders of the
Company for a vote, and (ii) use its  reasonable  efforts to effect such removal
and  replacement,  or increase and election,  and the  submission of the subject
transactions  to the  stockholders  of the Company;  and (iii) at any time after
initial approval by the stockholders of the Company of the subject transactions,
if so  requested  by  Acquiror,  to approve all or any  actions  incident to the
subject  transactions  or the other  matters  referred to in this Section 1.6 by
stockholder written consent.

     (c) If there is an Exchange  Offer  pursuant to Section  7.15 of the Merger
Agreement,  each Stockholder agrees to tender such Stockholder's Shares into the
Exchange  Offer   (including  all  Shares   issusable  upon  conversion  of  the
Debentures; provided, however, that actual conversion need not be effected until
consummation of the Exchange Offer).

     Section 1.7. No Disposition or Encumbrance of Shares and Options.


                                       6
<PAGE>


               Except to the extent  set forth in  Exhibit  B, each  Stockholder
          hereby  severally and not jointly  covenants and agrees that, from the
          date hereof to the  termination  of the rights of Acquiror  under this
          Agreement,  it shall  not,  and shall  not  offer or agree  to,  sell,
          transfer,  tender,  assign,  hypothecate  or otherwise  dispose of, or
          create or permit to exist any Encumbrance (as hereinafter  defined) on
          the  Shares  owned  by  such  Stockholder  at any  time  prior  to the
          Effective Time.

               Section 1.8. Voting of Shares; Further Assurances.

     (a) Each Stockholder,  by this Agreement,  with respect to its Shares, does
hereby  constitute  and  appoint  Sub and  Acquiror,  or any  nominee of Sub and
Acquiror,  with full power of substitution,  from the date hereof to the earlier
to occur of the  termination of the Merger  Agreement or the Effective  Time, as
its true and lawful attorney and proxy (its "Proxy"), for and in its name, place
and stead, to vote each of such Shares as its Proxy, at every annual, special or
adjourned  meeting of the  stockholders  of the Company,  including the right to
sign its name (as  stockholder)  to any consent,  certificate  or other document
relating  to the  Company  that the law of the State of  Delaware  may permit or
require:

                    (i) in favor of the Merger, the Merger Agreement (as amended
          from time to time) and the  transactions  contemplated  by the  Merger
          Agreement;

                    (ii)    against   any    Acquisition    Proposal   for   any
          recapitalization,  merger  (other than the Merger),  sale of assets or
          other  business  combination  between  the  Company  and any person or
          entity  (other than  Acquiror or Sub) or any other action or agreement
          that would result in a breach of any covenant or any other  obligation
          or agreement of the Company under the Merger  Agreement or which could
          result in any of the  conditions  to the  Merger  Agreement  not being
          fulfilled; and

                    (iii) against (A) any extraordinary corporate transaction,
          such as a merger, consolidation or other business combination
          involving the Company or any of its Subsidiaries, (B) any sale, lease,
          or transfer by the Company of a material amount of assets (including
          stock) of the Company or any of its Subsidiaries, or a reorganization,
          restructuring, recapitalization, special dividend, dissolution or
          liquidation of the Company or any of its Subsidiaries; or (C) (1) any
          change in a majority of the persons who constitute the board of
          directors of the Company or any of its Subsidiaries; (2) any change in
          the present capitalization of the Company or any of its Subsidiaries



                                       7
<PAGE>


including any proposal to sell a substantial  equity  interest in the Company or
any  of  its  Subsidiaries;   any  amendment  of  the  Company  or  any  of  its
Subsidiaries' charters or By-laws; (4) any other change in the Company or any of
its  Subsidiaries'  corporate  structure  or  business;  or (5) any other action
which, in the case of each of the matters  referred to in clauses  (C)(1),  (2),
(3) or (4), is intended, or could reasonably be expected,  to impede,  interfere
with,  delay,  postpone,  or  materially  adversely  affect  the  Merger and the
transactions contemplated by this Agreement.

                    THIS  POWER  OF  ATTORNEY  IS  IRREVOCABLE,  IS  GRANTED  IN
          CONSIDERATION  OF ACQUIROR AND SUB ENTERING INTO THE MERGER  AGREEMENT
          AND IS  COUPLED  WITH AN  INTEREST  SUFFICIENT  IN LAW TO  SUPPORT  AN
          IRREVOCABLE  POWER.  This appointment shall revoke all prior attorneys
          and proxies  appointed by any  Stockholder at any time with respect to
          the Shares and no subsequent attorneys or proxies will be appointed by
          such  Stockholder,  or be effective,  with respect  thereto during the
          term of this Agreement.

          (a) Each Stockholder  shall perform such further acts and execute such
further  documents and  instruments as may reasonably be required to vest in Sub
and  Acquiror the power to carry out and give effect to the  provisions  of this
Agreement.

          (b)  Nothing  contained  in this  Section  1.8 shall be  construed  to
invalidate any action taken by a Stockholder in accordance with Section 1.8.

               Section 1.9. Purchase Events.

               Acquiror  may  exercise  the  Option  only  if one or more of the
following events has occurred:

          (a) the Board of  Directors  of the Company or any  committee  thereof
shall have withdrawn or modified its approval or recommendation of the Merger or
the  Merger  Agreement  in any  manner  adverse  to  Acquiror,  or  approved  or
recommended any Acquisition  Proposal (as defined in the Merger  Agreement),  or
shall have adopted a resolution to take any of the foregoing actions;

          (b) (i) the approval of the Merger  Agreement by the  stockholders  of
the Company  shall have not been obtained by reason of the failure to obtain the
required vote at the Stockholders'  Meeting (as defined in the Merger Agreement)
and (ii) at the time of such negative vote there shall be pending an Acquisition
Proposal (as defined in the Merger Agreement);

          (c) the Company or any of its Subsidiaries shall have


                                       8
<PAGE>


entered into any  agreement  with any person  (other than Acquiror or any of its
affiliates),  the  Board  of  Directors  of such  entity  shall  have  approved,
recommended  or resolved  to enter into an  agreement  with any  person,  or the
Company shall have publicly announced its intention to take any of the foregoing
actions, with respect to the sale of 20% or more (in voting power) of the voting
securities of the Company or of 20% or more (in fair market value) of the assets
of the Company and its  Subsidiaries,  on a  consolidated  basis,  however  such
transaction may be effected; or

          (d) any person (other than Acquiror or any of its  affiliates),  shall
have  commenced  (as such term is  defined in Rule  14d-2  under the  Securities
Exchange Act of 1934,  as amended (the  "Exchange  Act"),  or shall have filed a
registration statement under the Securities Act of 1933, as amended (the "Act"),
with respect to a tender or exchange  offer for securities  representing  35% or
more of the voting power of the Company;  or the  acquisition,  by any person or
group (as defined in Section 13(d) of the Exchange Act),  other than Acquiror or
any of its affiliates,  of beneficial ownership of (as defined in the Rule 13d-3
under the  Exchange  Act),  or the right to  acquire  beneficial  ownership  of,
securities representing 35% or more of the voting power of the Company;

         provided that no event set forth in this Section 1.9 shall be deemed to
         occur solely by reason of any  agreement,  or any action that is taken,
         or of any event that  occurs,  for which  Acquiror  has given its prior
         written  consent.  As used in this  Agreement,  "person" shall have the
         meaning specified in Section 13(d)(3) of the Exchange Act.

          Section 1.10. Convertible Debentures.

          Each Stockholder that holds Debentures agrees that all Debentures held
by such  Stockholder  shall be converted  into shares of Common Stock  (together
with any shares of Common Stock representing  accrued but unpaid interest on the
Debentures) in accordance with Section 15.1 of the Debenture Purchase Agreement,
dated as of January  13,  1997,  as amended as of January  31,  1997,  among the
Company,  British  Aerospace  Holdings,  Inc. and Matra Marconi Space UK Limited
(the "Debenture  Agreement") relating thereto immediately prior to the Effective
Time (except if converted prior to such date), and at such time,  converted into
the right to receive in the Merger  Acquiror Shares in accordance with the terms
of the Merger Agreement.  In consideration  for the foregoing,  such Stockholder
waives its rights under Section 11.3 of the Debenture  Agreement with respect to
the consummation of the Merger.



                                       9
<PAGE>


          Section 1.11. Control Shares

          The Company hereby waives its rights under Article  ELEVENTH,  Section
H, of its  Restated  Certificate  of  Incorporation  with  respect to all Shares
acquired  pursuant  to  exercise  of the  Option,  and hereby  agrees,  promptly
following any such exercise, to exchange for such Shares an equal number of duly
authorized,  but unissued  Shares,  which upon issuance will be validly  issued,
fully paid and  nonassessable  Shares,  and which will not be  "control  shares"
within the meaning of such Article ELEVENTH.

                                   Article II.

               REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDERS

          Each  Stockholder,  severally and not jointly,  hereby  represents and
warrants to Acquiror as follows:

          Section 2.1. Due Organization, Authorization, etc.

          Such  Stockholder (if it is a corporation,  partnership or other legal
entity) is duly organized,  validly existing and in good standing under the laws
of the jurisdiction of its  incorporation or organization.  Such Stockholder has
all  requisite  power  (corporate  or  otherwise)  to execute and  deliver  this
Agreement,  to grant the Option and to consummate the  transaction  contemplated
hereby.  The  execution  and  delivery of this  Agreement,  the  appointment  of
Acquiror and Sub as such Stockholder's Proxy, the granting of the Option and the
consummation of the transactions  contemplated  hereby have been duly authorized
by  all  necessary  action   (corporate  or  otherwise)  on  the  part  of  such
Stockholder. This Agreement has been duly executed and delivered by or on behalf
of such Stockholder and, assuming its due authorization,  execution and delivery
by  Acquiror,  constitutes  a  legal,  valid  and  binding  obligation  of  such
Stockholder, enforceable against such Stockholder in accordance with its terms.

          Section 2.2. No Conflicts, Required filings and Consents.

          (a) The execution and delivery of this  Agreement by such  Stockholder
does not, and the  performance of this Agreement by such  Stockholder  will not,
(i) conflict  with or violate the  Certificate  of  Incorporation  by By-Laws or
other similar  organizational  documents of such  Stockholder  (in the case of a
Stockholder that is a corporation, partnership or other legal


                                       10
<PAGE>



entity),  (ii)  conflict  with or violate any  statute,  law,  ordinance,  rule,
regulation, order, decree or judgment applicable to such Stockholder or by which
it or any of its properties is bound or affected,  or (iii) result in any breach
of or  constitute a default  (with or without  notice or lapse of time, or both)
under, or give to others any rights of termination,  amendment,  acceleration or
cancellation  of, or result in the creation of a lien or  encumbrance  on any of
the  property  or  assets  of such  Stockholder  or (if  such  Stockholder  is a
corporation,  partnership  or  other  legal  entity)  any of  its  subsidiaries,
including,  without limitation,  the Shares, pursuant to, any indenture or other
loan document provision or other contract,  license,  franchise, permit or other
instrument or obligation to which such  Stockholder  is a party or by which such
Stockholder or any of its properties is bound or affected,  except,  in the case
of clauses (ii) and (iii), for any such breaches,  defaults or other occurrences
that would not prevent the  performance by such  Stockholder of its  obligations
under this Agreement.

          (b) The execution and delivery of this  Agreement by such  Stockholder
do not, and the  performance  of this  agreement by such  Stockholder  will not,
require any  consent,  approval,  authorization  or permit of, or filing with or
notification to, any governmental or regulatory authority,  domestic or foreign,
except where the failure to obtain such consents,  approvals,  authorizations or
permits,  or to make  such  filings  or  notifications,  would not  prevent  the
performance by the Stockholder of its obligations under this Agreement.

          Section 2.3. Title to Shares.

          Such  Stockholder  has,  and the  transfer by the  Stockholder  of the
Shares  hereunder will pass,  good and marketable  title to the Shares listed on
Exhibit  A  hereto,  free and  clear of any  pledge,  lien,  security  interest,
mortgage,  charge, claim, equity,  option,  proxy, voting restriction,  right of
first refusal,  limitation on disposition,  adverse claim of ownership or use or
encumbrance  of any kind  ("Encumbrances"),  except to the extent  disclosed  on
Exhibit B and for Shares sold prior to the Closing as  permitted  under  Section
1.8.

          Section 2.4. No Brokers.

          Except as contemplated in the Merger Agreement,  no broker,  finder or
investment  banker  is  entitled  to any  brokerage,  finder's  or other  fee or
commission in connection with the transactions contemplated by this Agreement.

          Section 2.5. Investment Intent, Etc.




                                       11
<PAGE>

          Each Stockholder is acquiring the Acquiror  Shares,  together with the
associated  rights,  to be received in the Merger or pursuant to the exercise of
the Option,  for its own account for  investment and not with a view towards the
resale,  transfer or  distribution  thereof,  nor with any present  intention of
distributing the Acquiror Shares.  Each Stockholder is an "accredited  investor"
within the meaning of Regulation D promulgated  under the Act. Each  Stockholder
has such knowledge and  experience in financial and business  matters that it is
capable of  evaluating  the merits and risks of an investment in Acquiror and is
able to bear the economic risk of such  investment  for an indefinite  period of
time.

                                  Article III.

                   REPRESENTATIONS AND WARRANTIES OF ACQUIROR

          Section 3.1. Authority Relative to the Agreement.

     (a) Acquiror has the corporate  power to execute and deliver this Agreement
and to carry out its obligations  hereunder.  The execution and delivery of this
Agreement and the consummation of the transactions contemplated hereby have been
duly authorized by Acquiror's  Board of Directors.  The Agreement  constitutes a
valid and  binding  obligation  of  Acquiror,  enforceable  against  Acquiror in
accordance  with its terms,  except as enforcement may be limited by bankruptcy,
insolvency or other similar laws affecting the enforcement of creditors'  rights
generally  and except that the  availability  of equitable  remedies,  including
specific performance, is subject to the discretion of the court before which any
proceeding therefor may be brought.  No other corporate  proceedings on the part
of Acquiror are necessary to authorize the execution and delivery by Acquiror of
this Agreement or the consummation of the transactions contemplated hereby.

     (b) The execution and delivery of this  Agreement and the  consummation  of
the transactions contemplated hereby, does not and will not result in the change
in  conversion  ratios,  conversion  rights or  voting  rights,  or the  breach,
violation,  default  (with  or  without  notice  or lapse  of  time,  or  both),
termination,  cancellation or  acceleration of any obligation,  or the loss of a
material benefit, under (i) the Acquiror's Memorandum of Association or bye-laws
or (ii) any  indenture  or other  loan  document  provision  or other  contract,
license,  franchise,  permit,  order,  decree,  concession,  lease,  instrument,
judgment,  statute, law, ordinance, rule or regulation applicable to Acquiror or
any of its Subsidiaries or their respective properties or assets, other than, in
the case of clause (ii)


                                       12
<PAGE>


only,  (A) any  breaches,  violations,  defaults,  terminations,  cancellations,
accelerations or losses which, either singly or in the aggregate,  will not have
a  Acquiror   Material  Adverse  Effect  or  prevent  the  consummation  of  the
transactions contemplated hereby.

          Section 3.2. Representations in Merger Agreement.

          Acquiror   represents  and  warrants  to  each  Stockholder  that  the
     representations  and  warranties  set  forth  in  Article  V of the  Merger
     Agreement were (or will be) true and correct when made and on and as of the
     date  of  any  action  taken  by  Acquiror  hereunder   (including  without
     limitation  exercise  of the  Option)  with the same  effect as though such
     representations and warranties had been made on and as of such date (except
     for  representations  and  warranties  that speak as of a specific  date or
     time, which need only be true and correct as of such date or time),  except
     where the failure of such  representations and warranties to be so true and
     correct  (without  giving effect to any limitation as to  "materiality"  or
     "Acquiror  Material  Adverse  Effect" set forth  therein)  does not have an
     Acquiror Material Adverse Effect, and such  representations  and warranties
     shall be deemed incorporated herein;  provided,  however, that incorporated
     representations  and warranties  which relate to the Merger Agreement shall
     be deemed for purposes of this Section to have been modified to relate only
     to this Agreement.

                                   Article IV.

                         DISTRIBUTIONS; ADJUSTMENT UPON
                           CHANGES IN CAPITALIZATION.

          (a) Any  dividends or other  distributions  (whether  payable in cash,
stock  or  otherwise)  by the  Company  with  respect  to any  Shares  purchased
hereunder  with a record  date on or after  the  Closing  Date  will  belong  to
Acquiror. If any such dividend or distribution  belonging to Acquiror is paid by
the Company to the  Stockholder,  the  Stockholder  shall hold such  dividend or
distribution  in trust for the benefit of Acquiror and shall promptly remit such
dividend or distribution  to Acquiror in exactly the form received,  accompanied
by  appropriate  instruments  of  transfer.  If on or  after  the  date  of this
Agreement there shall occur any stock dividend,  stock split,  recapitalization,
combination  or exchange of shares,  merger,  consolidation,  reorganization  or
other change or transaction of or by the Company, as a result of which shares of
any class of stock, other securities,  cash or other property shall be issued in
respect of any Shares or if any Shares shall be changed into the same or



                                       13
<PAGE>



another class of stock or other  securities,  then, upon exercise of the Option,
Acquiror  shall  receive for the  aggregate  price  payable upon exercise of the
Option with respect to the Shares,  all such shares of stock,  other securities,
cash or other property issued, delivered or received with respect to such Shares
(or if the Option shall not be exercised,  appropriate  adjustment shall be made
for purposes of the calculations set forth in this Agreement).

          (b) Any  dividends or other  distributions  (whether  payable in cash,
stock or  otherwise)  by Acquiror  with  respect to any Acquiror  Shares  issued
hereunder  with a record  date on or after the  Closing  Date will belong to the
Stockholder to which such Acquiror  Shares were issued.  If on or after the date
of  this  Agreement  there  shall  occur  any  stock   dividend,   stock  split,
recapitalization,  combination  or  exchange of shares,  merger,  consolidation,
reorganization or other change or transaction of or by Acquiror,  as a result of
which shares of any class of stock,  other  securities,  cash or other  property
shall be issued in  respect of any  Acquiror  Shares or if any  Acquiror  Shares
shall be changed  into the same or another  class of stock or other  securities,
then,  upon  exercise  of the Option,  each  Stockholder  shall  receive for the
aggregate  price payable to such  Stockholder  upon exercise of the Option,  all
such shares of stock, other securities, cash or other property issued, delivered
or  received  with  respect  to the  Acquiror  Shares  to be  delivered  to such
Stockholder  (or if the Option shall not be  exercised,  appropriate  adjustment
shall be made for purposes of the calculations set forth in this Agreement).

                                   Article V.

                        NO SOLICITATION OF TRANSACTIONS.

                           Each Stockholder  severally and not jointly covenants
         and agrees  that in its  capacity  as a  stockholder  of the Company it
         shall not,  through any officer,  director,  employee,  representative,
         agent or direct or indirect  stockholder  of the Company or any Company
         Subsidiary, directly or indirectly, take any action to (i) encourage,
         initiate or solicit the  submission  of any  proposal
         that constitutes an Acquisition Proposal, (ii) enter into any agreement
         with respect to or accept any Acquisition  Proposal or (iii) facilitate
         any  inquiries or the making of any proposal that  constitutes,  or may
         reasonably  be  expected  to lead  to,  an  Acquisition  Proposal.  The
         Stockholder  shall promptly  notify  Acquiror in writing of any request
         for information or Acquisition Proposal,  specifying reasonable details
         of any  inquiry  or  Acquisition  Proposal,  and  shall  keep  Acquiror
         informed as to the status of any such



                                       14
<PAGE>


          discussions  or  negotiations.  Each  Stockholder  severally  and  not
          jointly  further  agrees to use its best efforts as a  stockholder  to
          cause the Company not to, directly or indirectly,  solicit,  initiate,
          seek,  or encourage  (including by way of  furnishing  information  or
          assistance),  or take other action to facilitate, any inquiries or the
          making of any proposal which constitutes or may reasonably be expected
          to lead to, an Acquisition Proposal.

                                   Article VI.

                         COVENANTS OF THE STOCKHOLDERS.

          Section 6.1. Negative Covenants.

          Each Stockholder agrees, until the Option has terminated, not to:

          (a) sell, transfer,  pledge,  assign or otherwise dispose of, or enter
into any  contract,  option  or other  arrangement  with  respect  to the  sale,
transfer,  pledge,  assignment or other disposition of, the Shares owned by such
Stockholder to any person other than Acquiror or Acquiror's  designee and except
as contemplated in Exhibit B;

          (b) acquire any  additional  shares of Common Stock  without the prior
consent of  Acquiror  other than  pursuant  to rights  under the  Company  Stock
Purchase Plans,  options  outstanding on the date of this  Agreement,  or Shares
issued in payment of interest on the  Debentures  or  dividends  on the Series C
Shares;

          (c) deposit  any Shares into a voting  trust or grant a proxy or enter
into a voting  agreement with respect to any Shares,  except for this Agreement;
or

          (d) take any action that would make any  representation or warranty of
such  Stockholder  contained  herein  untrue or  incorrect  or would result in a
breach by such  Stockholder of its obligations  under this Agreement or a breach
by the Company of its obligations under the Merger Agreement.

                    Section 6.2. Reliance; Further Assurances.

                    Each Stockholder  understands and acknowledges that Acquiror
          and Sub are entering  into the Merger  Agreement in reliance upon each
          Stockholder's  execution and delivery of this  Agreement.  If Acquiror
          shall  exercise  the  Option  in  accordance  with  the  terms of this
          Agreement,  from time to time and without additional consideration the
          Stockholder will execute and deliver, or cause to be executed and


                                       15
<PAGE>


          delivered,   such  additional  or  further   transfers,   assignments,
          endorsements,   consents  and  other   instruments   as  Acquiror  may
          reasonably  request for the purpose of  effectively  carrying  out the
          transactions contemplated by this Agreement, including the transfer of
          the Shares to  Acquiror  and the  release of any and all  Encumbrances
          with respect thereto.

                    Section  6.3.   Transfer  of  Acquiror   Shares  by  British
          Aerospace.

          British Aerospace Space Systems,  Inc. and British Aerospace Holdings,
Inc.  (collectively,  "BAe") and Acquiror  agree to consult and  cooperate  with
respect to the orderly  disposition  of  Acquiror  Shares  obtained by BAe.  BAe
agrees that for a period of twelve months from the date it acquires the Acquiror
Shares  it will not,  and will  cause  each of its  affiliates  not to,  sell or
otherwise  transfer any Acquiror Shares other than by means of a block trade (or
a series  of block  trades)  with an  entity  that  qualifies  as a block  trade
positioner  (as that  term is  defined  and/or  interpreted  under  the  federal
securities  laws and the rules and  regulations  promulgated  thereunder) who is
experienced in block trade  transactions.  BAe shall consult with Acquiror prior
to such sale and seek the consent of Acquiror to such sale,  which consent shall
not be  unreasonably  withheld,  conditioned  or  delayed.  In the event of such
withholding  of consent,  BAe shall have the right to revise the proposed  sale,
and Acquiror shall  reconsider the revised sale in accordance  with the standard
of this Section. No delay in any proposed sale shall be beyond the expiration of
the twelve-month period. As an alternative to conducting block trades, BAe shall
have the  right to sell all (but  not  less  than  all) of its  Acquiror  Shares
pursuant to an underwritten  sale with an underwriter  reasonably  acceptable to
Acquiror. In such event, Acquiror shall modify the registration  statement filed
pursuant to Section 6.5 (or file a separate  registration  statement meeting the
requirements  of  Section  6.5) to enable  BAe to effect  such  sale.  Except as
provided in the prior  sentence,  Acquiror  shall not be  obligated to conduct a
"road show" or otherwise support such sale.

          Section 6.4. Affiliate Agreement.

                    Each Stockholder  acknowledges  that such Stockholder may be
          deemed an affiliate (as defined in Rule 12b-2 of the rules promulgated
          under the Exchange  Act) of the Company,  Acquiror or Sub, and further
          acknowledges  and agrees to  transfer,  sell or  otherwise  dispose of
          Acquiror Shares (including  Acquiror Shares acquired upon the exercise
          of  options,  warrants  or rights or the  conversion  or  exchange  of
          convertible or exchangeable securities) only (a) if such


                                       16
<PAGE>


          transfer,  sale or disposition is registered  under the Act, (b) is in
          compliance with the requirements of paragraphs (c) and (d) of Rule 145
          promulgated   under  the  Act  ("Rule  145")  (as   indicated  in  the
          restrictive legend that will appear on the stock certificate),  or (c)
          pursuant to another exemption from registration under the Act for such
          offer  and  sale.  Each  Stockholder  agrees  not to make  an  illegal
          "distribution"  (within  the  meaning  of the  Act  and  Rule  145) of
          Acquiror  Shares.  Acquiror  shall be  entitled  to place  restrictive
          legends upon  certificates for each  Stockholder's  Acquiror Shares to
          enforce  the  applicable  provisions  of law and  this  Agreement  and
          Acquiror  shall not be required to maintain the  effectiveness  of the
          Proxy Registration Statement (or Exchange Registration  Statement,  as
          the case may be) under the Act for the  purposes of resale of Acquiror
          Shares by each Stockholder.

                    Section 6.5. Registration Rights.

                    (a) In the event that  Acquiror  exercises  the  Option,  as
          promptly as  practicable  following  the closing date for the exchange
          offer  referred  to in  Section  1.2 above  (but not more than 60 days
          following  the  Closing  Date),   Acquiror  shall  (i)  file  a  shelf
          registration  statement  covering all Acquiror Shares for the purposes
          of resale of  Acquiror  Shares  by each  Stockholder  and (ii) use its
          reasonable best efforts to cause such shelf registration  statement to
          become and remain  effective  for the  resale of all  Acquiror  Shares
          issued pursuant to this Agreement;  provided,  however,  that Acquiror
          shall be required to include in such registration statement only those
          Acquiror  Shares as to which the  Stockholder  holding  such  Acquiror
          Shares agrees to sell such shares in compliance with the  requirements
          of paragraphs (c) and (d) of Rule 145 that would have been  applicable
          to such sale if such  Acquiror  Shares had been  registered  under the
          Proxy Registration Statement (or Exchange Registration  Statement,  as
          the case may be) rather than such shelf registration statement.

                    (b)  Registrations  effected  under  this  Section  shall be
          effected at Acquiror's expense, including the fees and expenses of one
          counsel to the holders of Acquiror Shares, but excluding  underwriting
          discounts and  commissions to brokers or dealers.  In connection  with
          each  registration  under this Section,  Acquiror shall  indemnify and
          hold each  holder of  Acquiror  Shares  whose  shares  are  registered
          pursuant  to  such  registration  statement  (a  "Holder  of  Acquiror
          Shares"),  its underwriters  and each of their  respective  affiliates
          harmless against any and all losses, claims, damages,  liabilities and
          expenses (including,


                                       17
<PAGE>



          without limitation,  investigation expenses and fees and disbursements
          of counsel and accountants), joint or several, to which such Holder of
          Acquiror  Shares,  its  underwriters  and  each  of  their  respective
          affiliates may become subject,  under the Securities Act or otherwise,
          insofar as such losses, claims,  damages,  liabilities or expenses (or
          actions in respect  thereof)  arise out of or are based upon an untrue
          statement or alleged untrue  statement of a material fact contained in
          such registration statement (including any prospectus therein), of any
          amendment or supplement thereto, or arise out of or are based upon the
          omission or alleged omission to state therein a material fact required
          to be stated therein or necessary to make the  statements  therein not
          misleading,  other than such losses, claims,  damages,  liabilities or
          expenses (or actions in respect  thereof) which arise out of are based
          upon an untrue  statement  or alleged  untrue  statement of a material
          fact  contained  in  written  information  furnished  by a  Holder  of
          Acquiror  Shares to Acquiror  expressly  for use in such  registration
          statement;  provided,  however, that the foregoing indemnity shall not
          inure  to  the  benefit  of  any  Holder  of  Acquiror   Shares,   its
          underwriters or respective affiliates, if a copy of the prospectus was
          not  sent or  given  by or on  behalf  of such  person  to the  person
          purchasing the Shares,  if required by law so to have been  delivered,
          at or prior to the written  confirmation  of the sale of the Shares to
          such person,  and if the  prospectus  (as so amended or  supplemented)
          would have cured the defect giving rise to such loss, claim, damage or
          liability.

                    (c) In connection with any registration  statement  pursuant
          to this  Section,  each  Holder of Acquiror  Shares  agrees to furnish
          Acquiror with such information concerning itself and the proposed sale
          or  distribution  as shall  reasonably  be required in order to ensure
          compliance with the requirements of the Securities Act. Each Holder of
          Acquiror  Shares shall indemnify and hold Acquiror,  its  underwriters
          and each of their respective  affiliates  harmless against any and all
          losses, claims,  damages,  liabilities and expenses (including without
          limitation  investigation  expenses  and  fees  and  disbursements  of
          counsel and  accountants),  joint or several,  to which Acquiror,  its
          underwriters  and  each of  their  respective  affiliates  may  become
          subject under the Securities Act or otherwise, insofar as such losses,
          claims,  damages,  liabilities  or  expenses  (or  actions  in respect
          thereof) arise out of or are based upon an untrue statement or alleged
          untrue  statement of a material fact contained in written  information
          furnished by any Holder of Acquiror  Shares to Acquiror  expressly for
          use in such registration statement. In no


                                       18
<PAGE>


          event  shall the  liability  of any Holder of  Acquiror  Shares or any
          affiliate  thereof  under this  Section be greater in amount  than the
          dollar  amount of the  proceeds  received  by such  Holder of Acquiror
          Shares  upon  the  sale of the  Acquiror  Shares  giving  rise to such
          indemnification obligation.

                    (d) Upon the issuance of Acquiror Shares hereunder, Acquiror
          will use its  reasonable  best efforts  promptly to list such Acquiror
          Shares with the New York Stock  Exchange or on such  national or other
          exchange on which Acquiror Shares are at the time principally listed.

                                  Article VII.

                                  MISCELLANEOUS

                    Section 7.1. Non-Survival of Representations, Warranties and
          Agreements.

                    All  representations,  warranties and agreements made by the
          parties to this  Agreement  shall  terminate at the Closing except for
          those which by their terms are to be performed after the Closing.

                    Section 7.2. Expenses.

                    All costs  and  expenses  incurred  in  connection  with the
          transactions contemplated by this Agreement shall be paid by the party
          incurring such costs and expenses.

                    Section 7.3. Notices.

                    All  notices or other  communications  under this  Agreement
          shall be in  writing  and shall be given by  delivery  in  person,  by
          facsimile,   cable,   telegram,   telex  or  other  standard  form  of
          telecommunications,  or  by  registered  or  certified  mail,  postage
          prepaid, return receipt requested, addressed as follows (or such other
          address  for a party  as  shall  be  specified  in a  notice  given in
          accordance  with  this  Section  7.3) and shall be deemed to have been
          given  one  business  day after  transmission  by  facsimile  of other
          standard form of  telecommunications or four days after deposit in the
          US mail:




                                       19
<PAGE>


                  If to the Company:

                  Orion Network Systems, Inc.
                  2440 Research Boulevard
                  Suite 400
                  Rockville, Maryland  20850
                  Telecopier No.: (301) 258-3300
                  Attention: President

                  With a copy (which shall not constitute notice) to:

                  Hogan & Hartson L.L.P.
                  Columbia Square
                  555 Thirteenth Street, N.W.
                  Washington, DC 20004
                  Telecopier No.:  (202) 637-5910
                  Attention:  Anthony S. Harrington, Esq.

          If to a  Stockholder,  at the  address  or  facsimile  number  of such
Stockholder set forth on Exhibit A, with a copy to:

                  Hogan & Hartson L.L.P.
                  Columbia Square
                  555 Thirteenth Street, N.W.
                  Washington, DC  20004
                  Telecopier No.: (202) 637-5910
                  Attention: Anthony S. Harrington, Esq.

                  If to Acquiror or Sub, at:

                  Loral Space & Communications Ltd.
                  600 Third Avenue
                  New York, New York  10016
                  Telecopier No.: (212) 338-5350
                  Attention: Eric J. Zahler, Esq.

                  with a copy to:

                  Willkie Farr & Gallagher
                  One Citicorp Center
                  153 East 53rd Street
                  New York, New York  10022
                  Telecopier No.: (212) 821-8111
                  Attention: Bruce R. Kraus, Esq.



                                       20
<PAGE>


                    Section 7.4. Severability.

                    Any term or provision of this Agreement  which is invalid or
          unenforceable in any jurisdiction  shall, as to that jurisdiction,  be
          ineffective  to the  extent  of such  invalidity  or  unenforceability
          without  rendering  invalid or  unenforceable  the remaining terms and
          revisions   of  this   Agreement   or   affecting   the   validity  or
          enforceability  of any of the terms or provisions of this Agreement in
          any other jurisdiction. If any provision of this Agreement is so broad
          as to be unenforceable,  the provision shall interpreted to be only so
          broad as is enforceable.

                    Section 7.5. Entire Agreement.

                    This Agreement and any documents delivered by the parties in
          connection  herewith constitute the entire agreement among the parties
          with  respect to the subject  matter  hereof and  supersede  all prior
          agreements and understandings  among the parties with respect thereto.
          No addition to or  modification  of any  provision  of this  Agreement
          shall be binding  upon any party  hereto  unless  made in writing  and
          signed by all parties hereto.

                    Section 7.6. Assignment, Binding Effect.

                    Neither this  Agreement nor any of the rights,  interests or
          obligations  hereunder  shall be assigned by any of the parties hereto
          (whether by operation of law or  otherwise)  without the prior written
          consent of the other  parties,  except that Acquiror or Sub may assign
          all or any of their rights and obligations  hereunder to any affiliate
          of Acquiror,  provided that no such assignment  shall relieve Acquiror
          or Sub of its obligations  hereunder if such assignee does not perform
          such obligations.  Subject to the preceding  sentence,  this Agreement
          shall be binding  upon and shall  inure to the  benefit of the parties
          hereto and their  respective  successors and assigns.  Notwithstanding
          anything contained in this Agreement to the contrary,  nothing in this
          Agreement,  expressed or implied,  is intended to confer on any person
          other  than the  parties  hereto or their  respective  successors  and
          assigns any rights,  remedies,  obligations or liabilities under or by
          reason of this Agreement.

                    Section 7.7. Specific Performance.

                    The parties hereto agree that irreparable damage would occur
          in the event  that any of the  provisions  of this  Agreement  was not
          performed  in  accordance  with its  specific  terms or was  otherwise
          breached. It is accordingly agreed


                                       21
<PAGE>



          that the parties shall be entitled to an injunction or  injunctions to
          prevent  breaches of this  Agreement and to enforce  specifically  the
          terms and  provisions  hereof in any  Delaware  Court,  this  being in
          addition to any other  remedy to which they are  entitled at law or in
          equity.

                    Section 7.8. Confidentiality and Public Announcements.

                    The parties  recognize that  successful  consummation of the
          transactions  contemplated  by this  Agreement  may be dependent  upon
          confidentiality  with  respect to the matters  referred to herein.  In
          this  connection,  pending  public  disclosure  thereof,  each  of the
          parties  hereto  severally  and not jointly  agrees not to disclose or
          discuss such matters with anyone not a party to this Agreement  (other
          than its counsel, advisors,  corporate parents and Affiliates) without
          the prior  written  consent of the other  parties  hereto,  except for
          filings  required  pursuant  to the  Exchange  Act and the  rules  and
          regulations   thereunder  or  disclosures   its  counsel  advises  are
          necessary  in order to fulfill its  obligations  imposed by law or the
          requirements of any securities exchange. At all times during the terms
          of this  Agreement,  the parties  hereto will  consult with each other
          before  issuing or making any reports,  statements  or releases to the
          public with respect to this Agreement or the transactions contemplated
          hereby and will use good faith  efforts to agree on the text of public
          reports,  statements or releases.  For purposes of this  Section,  any
          consultation  or  consent  required  of from the  Stockholders  may be
          obtained from Gustave M. Hauser.

                    Section 7.9. Governing Law.

                    This  Agreement  shall  be  governed  by  and  construed  in
          accordance  with the laws of the State of Delaware,  without regard to
          its rules of conflict of laws.

                    Section 7.10. Readings.

                    Headings of the Articles and Sections of this  Agreement are
          for the  convenience  of the  parties  only,  and  shall  be  given no
          substantive or interpretive effect whatsoever.

                    Section 7.11. Counterparts.

                    This  Agreement  may be executed  by the  parties  hereto in
          separate  counterparts,  each of which when so executed and  delivered
          shall be an original, but all such



                                       22
<PAGE>


          counterparts  shall together  constitute one and the same  instrument.
          Each  counterpart may consist of a number of copies hereof each signed
          by less than all, but together signed by all of the parties hereto.





                                       23
<PAGE>


                           IN WITNESS  WHEREOF,  the parties  hereto have caused
         this Principal Stockholder Agreement to be executed and delivered as of
         the date first written above.

                                   LORAL SPACE & COMMUNICATIONS LTD.

                                   By: /s/ Eric J. Zahler
                                   Name:  Eric J. Zahler
                                   Title:     Vice President, General
                                              Counsel and Secretary



                                   LORAL SATELLITE CORPORATION

                                   By: /s/ Eric J. Zahler
                                   Name:  Eric J. Zahler
                                   Title:     Vice President, General
                                              Counsel and Secretary



                                   ORION NETWORK SYSTEMS INC.

                                   By:  /s/ W. Neil Bauer
                                   Name:  W. Neil Bauer
                                   Title:  President and Chief Executive Officer



                                   BRITISH AEROSPACE SPACE SYSTEMS, INC.

                                   By:  /s/ William Anthony Rice
                                   Name:  William Anthony Rice
                                   Title: Director



                                    BRITISH AEROSPACE HOLDINGS, INC.

                                    By:  /s/ William Anthony Rice
                                    Name:  William Anthony Rice
                                    Title: Director





                                    FLEET VENTURE RESOURCES, INC.




                                       24
<PAGE>

                                      By:/s/ Robert M. Van Degna
                                      Name:Robert M. Van Degna
                                      Title:Chairman and Chief Executive Officer



                                      /s/ John V. Saeman
                                     John V. Saeman



                                     /s/ W. Neil Bauer
                                     W. Neil Bauer



                                    /s/ Gustave M. Hauser
                                    Gustave M. Hauser



                                   /s/ Sidney S. Kahn
                                   Sidney S. Kahn



                                   /s/ John G. Puente
                                   John G. Puente






                                       25
<PAGE>





                                    EXHIBIT A



                           Common   Series A   Series B   Series C   Convertible
                           Stock    Preferred  Preferred  Preferred  Debentures
                           ------   ---------  ---------  ---------  -----------

British Aerospace Space
Systems, Inc.              729,921   _____      _____     3,007,770   3,571,429
British Aerospace
Holdings, Inc.
Warwick House, PO Box 87
Farnborough Aerospace
Centre
Farnborough
Hants, GU146YU
Telecopier No.:
(011) 441-252-383488


John V. Saeman          1,394,078   58,823     16,339      _____        _____
Medallion Enterprises,
LLC
3200 Cherry Creek
South Dr.
Suite 570
Denver, CO  80209
Telecopier No.:
(303) 722-0443


W. Neil Bauer(1)(2)      _____        _____      _____     _____         _____
Orion
2440 Research Blvd.
Suite 400
Rockville, MD  20850
Telecopier No.: (301) 258-3300


Gustave M. Hauser       352,355      58,823     16,339     _____         _____
Hauser Communications,
Inc.
712 Fifth Avenue
41st Floor
New York, NY  10019
Telecopier No.: (212) 956-
(303) 722-1413




                                       26
<PAGE>





Sidney S. Kahn         207,260    _____         8,169     _____           _____
14 East 60th Street
Suite 500
New York, NY  10022
Telecopier No.: 
(212) 750-8904


John G. Puente(2)      321,501   1,411            392     _____           _____
10500 Willowbrook Dr.
Potomac, MD  20854
Telecopier No.: 
(301) 299-9691


Fleet Venture         _____    588,234         155,194    _____           _____
Resources, Inc.        
c/o Fleet Equity Partners
RI MO F12C
50 Kennedy Plaza
Providence, RI  02903
Telecopier No.: 
(401) 278-6387


     (1)  Does not include  shares  purchased  under Employee Stock Purchase
          Plan.

     (2)  Does not include shares beneficially owned by wife.



                                       27
<PAGE>




                                    EXHIBIT B


                    Each of the  Stockholders  shall have the right to  transfer
          Shares to (a) any member of such  Stockholder's  immediate family, (b)
          any trust or similar  instrument for estate  planning  purposes or (c)
          any charitable organization, foundation or similar entities; provided,
          however,  such transfer may be made to any such  permitted  transferee
          only if such permitted transferee shall agree in writing to all of the
          terms,  conditions  and  restrictions  set  forth  in  this  Agreement
          regarding Shares received by such permitted transferee.




                                       28








<PAGE>











                          AGREEMENT AND PLAN OF MERGER

                                  BY AND AMONG

                           ORION NETWORK SYSTEMS, INC.

                        LORAL SPACE & COMMUNICATIONS LTD.

                                       and

                           LORAL SATELLITE CORPORATION










                           DATED AS OF OCTOBER 7, 1997






<PAGE>




                                TABLE OF CONTENTS

                                                                           Page



                              ARTICLE I. THE MERGER
SECTION 1.1. The Merger.......................................................1
SECTION 1.2. Effective Time...................................................1
SECTION 1.3. Effect of the Merger.............................................2
SECTION 1.4. Certificate of Incorporation; Bylaws.............................2
SECTION 1.5. Directors and Officers...........................................2
SECTION 1.6. Closing..........................................................2
SECTION 1.7. Subsequent Actions...............................................2


         ARTICLE II. CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES
SECTION 2.1. Conversion of Securities.........................................3
SECTION 2.2. Payment..........................................................5
SECTION 2.3. Company Options; Stock Purchase Plan; Warrants...................7
SECTION 2.4. Stock Transfer Books.............................................9
SECTION 2.5. Certain Adjustments..............................................9


           ARTICLE III. REPRESENTATIONS AND WARRANTIES OF THE COMPANY
SECTION 3.1. Organization and Qualification; Subsidiaries.....................9
SECTION 3.2. Certificate of Incorporation and Bylaws..........................10
SECTION 3.3. Capitalization...................................................10
SECTION 3.4. Authority........................................................11
SECTION 3.5. No Conflict; Required Filings and Consents.......................12
SECTION 3.6. SEC Filings; Financial Statements................................13
SECTION 3.7. Absence of Certain Changes or Events.............................13
SECTION 3.8. Absence of Litigation............................................14
SECTION 3.9. Licenses and Permits; Compliance with Laws.......................14
SECTION 3.10. Taxes...........................................................17
SECTION 3.11. Intellectual Property...........................................18
SECTION 3.12. Material Contracts..............................................19
SECTION 3.13. Employee Benefit Plans..........................................20
SECTION 3.14. Properties; Assets..............................................21
SECTION 3.15. Labor Relations.................................................22
SECTION 3.16. Environmental Matters...........................................23
SECTION 3.17. Insurance.......................................................24
SECTION 3.18. Board Approval; Vote Required...................................24
SECTION 3.19. Opinion of Financial Advisor....................................24
SECTION 3.20. Brokers.........................................................25
SECTION 3.21. Takeover Provisions Inapplicable................................25


                                  

                                     - i -
<PAGE>






            ARTICLE IV. REPRESENTATIONS AND WARRANTIES OF MERGER SUB     
SECTION 4.1. Organization and Qualification...................................25
SECTION 4.2. Certificate of Incorporation and Bylaws..........................25
SECTION 4.3. Authority........................................................25
SECTION 4.4. No Conflict; Required Filings and Consents.......................26


              ARTICLE V. REPRESENTATIONS AND WARRANTIES OF ACQUIROR
SECTION 5.1. Organization and Qualification; Subsidiaries.....................27
SECTION 5.2. Certificate of Incorporation and Bylaws..........................27
SECTION 5.3. Capitalization...................................................27
SECTION 5.4. Authority........................................................28
SECTION 5.5. No Conflict; Required Filings and Consents.......................29
SECTION 5.6. SEC Filings; Financial Statements................................29
SECTION 5.7. Absence of Certain Changes or Events.............................30
SECTION 5.8. Absence of Litigation............................................30
SECTION 5.9. Licenses and Permits; Compliance with Laws.......................30
SECTION 5.10. Taxes...........................................................31
SECTION 5.11. Intellectual Property...........................................32
SECTION 5.12. Material Contracts..............................................33
SECTION 5.13. Employee Benefit Plans..........................................33
SECTION 5.14. Qualification of Acquiror.......................................33
SECTION 5.15. Brokers.........................................................34


                              ARTICLE VI. COVENANTS
SECTION 6.1. Affirmative Covenants of the Company.............................34
SECTION 6.2. Negative Covenants of the Company................................35


                       ARTICLE VII. ADDITIONAL AGREEMENTS
SECTION 7.1. Access and Information...........................................38
SECTION 7.2. Confidentiality..................................................38
SECTION 7.3. Proxy Registration Statement; Board Recommendation and
                    Stockholder Vote..........................................38
SECTION 7.4. FCC Application..................................................39
SECTION 7.5. HSR Act Matters..................................................40
SECTION 7.6. Public Announcements.............................................40
SECTION 7.7. Indemnification; Directors' and Officers' Insurance..............40
SECTION 7.8. Employee Benefits Matters........................................42
SECTION 7.9. Further Action; Commercially Reasonable Efforts..................42
SECTION 7.10. Negotiation With Others.........................................43
SECTION 7.11. Stock Merger Listing............................................44
SECTION 7.12. Blue Sky........................................................44
SECTION 7.13. Affiliate Agreements............................................44
SECTION 7.14. Consent Solicitation and Supplemental Indenture.................44
SECTION 7.15. The Exchange Offer..............................................45



                                     - ii -
<PAGE>



SECTION 7.16. Control of Acquiror and the Company.............................48
SECTION 7.17. Private Letter Ruling...........................................49


                        ARTICLE VIII. CLOSING CONDITIONS
SECTION 8.1. Conditions to Obligations of Acquiror, Merger Sub and the Company
                    to Effect the Merger......................................49
SECTION 8.2. Additional Conditions to Obligations of Acquiror and Merger Sub..50
SECTION 8.3. Additional Conditions to Obligations of the Company..............51


                  ARTICLE IX. TERMINATION, AMENDMENT AND WAIVER
SECTION 9.1. Termination......................................................52
SECTION 9.2. Effect of Termination............................................53
SECTION 9.3. Expenses.........................................................53
SECTION 9.4. Amendment........................................................54
SECTION 9.5. Waiver...........................................................54


                          ARTICLE X. GENERAL PROVISIONS
SECTION 10.1. Nonsurvival of Representations, Warranties and Agreements.......55
SECTION 10.2. Notices.........................................................55
SECTION 10.3. Certain Definitions.............................................56
SECTION 10.4. Headings........................................................57
SECTION 10.5. Severability....................................................57
SECTION 10.6. Entire Agreement................................................57
SECTION 10.7. Specific Performance............................................57
SECTION 10.8. Assignment......................................................58
SECTION 10.9. Third Party Beneficiaries.......................................58
SECTION 10.10. Governing Law..................................................58
SECTION 10.11. Counterparts...................................................58


EXHIBITS
- --------

Exhibit A           Affiliate Agreement





                                     - iii -
<PAGE>




                             Index of Defined Terms
                             ----------------------

                                                                     Section
                                                                     -------

Acquiror........................................................     PREAMBLE
Acquiror Benefit Plans..........................................     5.13(a)
Acquiror Commonly Controlled Entity.............................     5.13(a)
Acquiror Election...............................................     7.14(b)
Acquiror ERISA Plan.............................................     5.13(b)
Acquiror Ground Stations........................................     5.9
Acquiror Intellectual Property..................................     5.11
Acquiror Material Adverse Effect................................     5.1
Acquiror Material Contracts.....................................     5.12
Acquiror Permits................................................     5.9
Acquiror Rights Plan............................................     2.1(h)
Acquiror Satellites.............................................     5.9(a)
Acquiror SEC Reports............................................     5.6(a)
Acquiror Series A Preferred.....................................     5.3
Acquiror Series C Preferred.....................................     5.3
Acquiror Shares.................................................     2.1(a)
Acquiror Subsidiary and Acquiror Subsidiaries...................     5.1
Acquisition Proposal............................................     7.10(a)
affiliate.......................................................     10.3(a)
Affiliate Agreements............................................     7.13
Agreement.......................................................     PREAMBLE
Averaging Period................................................     2.1(a)
Backlog.........................................................     3.12(c)
beneficial owner................................................     10.3(b)
benefit liabilities.............................................     3.13(c)
Benefit Plans...................................................     3.13(a)
Blue Sky Laws...................................................     3.5(b)
business day....................................................     10.3(c)
Capital Stock...................................................     2.1(b)
Certificate and Certificates....................................     2.2(b)
Certificate of Merger...........................................     1.2
Claim...........................................................     7.7(b)
Closing.........................................................     1.6
Closing Date....................................................     1.6
Code............................................................     2.3
Common Stock....................................................     2.1(a)
Communications Act..............................................     3.5(b)
Company.........................................................     PREAMBLE
Company Balance Sheet...........................................     3.14(a)
Company Benefit Plans...........................................     3.13(a)
Company Commonly Controlled Entity..............................     3.13(a)
Company ERISA Plan..............................................     3.13(a)



                                     - i -
<PAGE>



Company Ground Stations.........................................    3.9(a)
Company Intellectual Property...................................    3.11
Company Material Adverse Effect.................................    3.1(a)
Company Material Contracts......................................    3.12(a)
Company Negative Vote...........................................    9.3(a)(iii)
Company Satellites..............................................    3.9(a)
Company SEC Reports.............................................    3.6(a)
Company Stock Option Plans......................................    2.3(a)
Company Subsidiary and Company Subsidiaries.....................    3.1(a)
Company Termination Fee.........................................    9.3(a)
Confidentiality Agreement.......................................    7.2
Consent Solicitation............................................    7.14(a)
control, controlled by, under common control with...............    10.3(d)
Convertible Debentures..........................................    3.3
Delaware Law....................................................    PREAMBLE
Determination Price.............................................    2.1(a)
Effective Time..................................................    1.2
Employee Stock Purchase Plan....................................    2.3(b)
Encumbrances....................................................    3.3
Environmental Claim.............................................    3.16(d)(i)
Environmental Laws..............................................    3.16(d)(ii)
Environmental Permits...........................................    3.16(a)
ERISA...........................................................    3.13(a)
Exchange Act....................................................    3.5(b)
Exchange Agent..................................................    2.2(a)
Exchange Consideration..........................................    7.15
Exchange Fund...................................................    2.2(a)
Exchange Offer..................................................    7.15(a)
Exchange Offer Conditions.......................................    7.15(a)
Exchange Offer Documents........................................    7.15(b)
Exchange Ratio..................................................    2.1(a)
Exchange Registration Statement.................................    7.15(b)
FCC.............................................................    3.5(b)
FCC Application.................................................    7.4(a)
FCC Rules.......................................................    3.9(a)
Final Order.....................................................    8.2(c)
Governmental Entity.............................................    3.5(b)
Hazardous Materials.............................................    3.16(d)(iii)
HSR Act.........................................................    3.5(b)
IGO Determinations..............................................    3.9(c)
Indemnified Parties.............................................    7.7(b)
Indentures......................................................    7.14(a)
Interim Period..................................................    7.1
Key Applications................................................    3.9(a)
Key Company Permits.............................................    3.9(a)



                                     - ii -
<PAGE>



Major Station...................................................     3.14(b)
Merger..........................................................     1.1
Merger Consideration............................................     2.2(b)
Merger Consideration Value......................................     6.3(d)(i)
Merger Sub......................................................     PREAMBLE
Multiemployer Plan..............................................     3.13(d)
NASD............................................................     3.5(b)
Nasdaq..........................................................     3.5(b)
NYSE............................................................     2.1(a)
Offer to Exchange...............................................     7.15(b)
Oldco...........................................................     3.6(a)
Option..........................................................     2.3(a)
Other Permits...................................................     3.9(a)
Per Share Amount................................................     2.1(b)
person..........................................................     10.3(e)
Preferred Stock.................................................     2.1(b)
Principal Stockholder Agreement.................................     PREAMBLE
Proxy Registration Statement....................................     7.3(a)
qualified.......................................................     3.13(b)
reasonable efforts..............................................     10.3(f)
Receiving Party.................................................     7.2
Requisite Consents..............................................     7.14(a)
Schedule 14D-1..................................................     7.15(c)
Schedule 14D-9..................................................     7.15(d)
SEC.............................................................     3.6(a)
Securities Act..................................................     3.5(b)
Senior Notes....................................................     7.14(a)
Series A Preferred Stock........................................     2.1(b)
Series B Preferred Stock........................................     2.1(b)
Series C Preferred Stock........................................     2.1(b)
Solicitation Termination Date...................................     7.14(b)
Stockholders' Meeting...........................................     7.3(b)
Subsidiary......................................................     3.1(b)
Surviving Corporation...........................................     1.1
Tax, Taxable and Taxes..........................................     3.10
Termination Date................................................     9.1(e)
Trading Day.....................................................     2.1(a)
unfunded current liability......................................     3.13(c)
VSAT Stations...................................................     3.14(b)
Volume Weighted Average Trading Price...........................     2.1(a)
Warrant.........................................................     2.3(c)




                                     - iii -
<PAGE>




                          AGREEMENT AND PLAN OF MERGER

                  THIS  AGREEMENT  AND  PLAN OF  MERGER  (this  "Agreement")  is
entered into this 7th day of October,  1997, by and among ORION NETWORK SYSTEMS,
INC., a Delaware corporation  ("Company"),  LORAL SPACE & COMMUNICATIONS LTD., a
Bermuda  company  ("Acquiror"),  and LORAL  SATELLITE  CORPORATION,  a  Delaware
corporation ("Merger Sub").

                  WHEREAS, the Boards of Directors of the Company,  Acquiror and
Merger Sub have each  determined  that it is fair to, and in the best  interests
of, their respective  stockholders that Merger Sub, a wholly-owned subsidiary of
Acquiror,  be merged with and into the  Company,  pursuant to and subject to the
terms and conditions of this Agreement and the Delaware General  Corporation Law
("Delaware Law"); and

                  WHEREAS, concurrently with the execution of this Agreement and
as an inducement to Acquiror to enter into this Agreement,  certain stockholders
have  entered  into an  agreement  with  Acquiror  (the  "Principal  Stockholder
Agreement") pursuant to which, among other things, such stockholders have agreed
to vote their  shares of stock of the  Company in favor of this  Agreement,  the
Merger  (as  defined  below)  and the other  transactions  contemplated  by this
Agreement; and

                  NOW,  THEREFORE,  in  consideration  of the  foregoing and the
respective  representations,  warranties,  covenants and agreements set forth in
this Agreement, the parties hereto agree as follows:

                                   ARTICLE I.

                                   THE MERGER

         SECTION 1.1.    The Merger.

                  Upon the terms and subject to the conditions set forth in this
Agreement,  and in  accordance  with  Delaware  Law, at the  Effective  Time (as
defined in Section  1.2)  Merger Sub shall be merged  with and into the  Company
(the "Merger").  As a result of the Merger, the separate corporate  existence of
Merger  Sub  shall  cease  and  the  Company  shall  continue  as the  surviving
corporation  of the  Merger  (sometimes  referred  to herein  as the  "Surviving
Corporation")  and a  wholly-owned  subsidiary  of  Acquiror.  The  name  of the
Surviving Corporation shall be Loral Orion Network Systems, Inc.

         SECTION 1.2.    Effective Time.

                  As promptly as  practicable on the Closing Date (as defined in
Section 1.6),  the parties  hereto shall cause the Merger to be  consummated  by
filing a certificate of merger (the  "Certificate of Merger") with the Secretary
of State of the State of Delaware,  in such form as required by, and executed in
accordance  with the relevant  provisions  of,  Delaware Law and in such form as
approved  by the  Company  and  Acquiror  prior to such  filing (the time of the
filing of the  Certificate  of Merger or the time  specified  therein  being the
"Effective Time").


<PAGE>

         SECTION 1.3.    Effect of the Merger.

                  At the  Effective  Time,  the effect of the Merger shall be as
provided in the  applicable  provisions  of Delaware Law.  Without  limiting the
generality of the foregoing,  and subject thereto, at the Effective Time, except
as otherwise provided herein, all the rights, privileges,  powers and franchises
of Merger Sub and the Company shall vest in the Surviving  Corporation,  and all
debts,  liabilities  and duties of Merger Sub and the Company  shall  become the
debts, liabilities and duties of the Surviving Corporation.

         SECTION 1.4.    Certificate of Incorporation; Bylaws.

                  At the Effective Time, (a) the certificate of incorporation of
Merger Sub, as, in effect immediately prior to the Effective Time and as amended
by the Certificate of Merger,  shall be the certificate of  incorporation of the
Surviving  Corporation,  and  (b)  the  bylaws  of  Merger  Sub,  as  in  effect
immediately  prior to the Effective  Time,  shall be the bylaws of the Surviving
Corporation.

         SECTION 1.5.    Directors and Officers.

                  The  directors  of  Merger  Sub (or such  other or  additional
individuals  as Acquiror may  designate  prior to Closing)  shall be the initial
directors of the Surviving  Corporation,  each to hold office in accordance with
the certificate of incorporation  and bylaws of the Surviving  Corporation;  and
the officers of Merger Sub (or such other or additional  individuals as Acquiror
may  designate  prior  to  Closing)  shall  be the  officers  of  the  Surviving
Corporation,  in each case until their respective successors are duly elected or
appointed and qualified.

         SECTION 1.6.    Closing.

                  Subject to the terms and  conditions  of this  Agreement,  the
closing of the Merger (the "Closing") will take place as promptly as practicable
after  satisfaction  of the  latest to occur or, if  permissible,  waiver of the
conditions set forth in Article VIII hereof (the "Closing Date"), at the offices
of Willkie Farr & Gallagher, One Citicorp Center, 153 East 53rd East Street, New
York,  New York 10022,  unless  another date or place is agreed to in writing by
the parties hereto.

         SECTION 1.7.    Subsequent Actions.

                  If,  at any time  after  the  Effective  Time,  the  Surviving
Corporation  shall  consider  or be  advised  that  any  deeds,  bills  of sale,
assignments,  assurances  or any  other  actions  or  things  are  necessary  or
desirable to continue in, vest, perfect or confirm of record or otherwise in the
Surviving  Corporation  its right,  title or interest in, to or under any of the
rights,  properties,   privileges,   franchises  or  assets  of  either  of  its
constituent corporations acquired or to be acquired by the Surviving Corporation
as a result of, or in connection with, the Merger or otherwise to carry out this
Agreement,  the officers and  directors of the  Surviving  Corporation  shall be
directed and  authorized  to execute and  deliver,  in the name and on behalf of
either  of such  constituent  corporations,  all  such  deeds,  bills  of  sale,
assignments and assurances and to take and do, in the name and on behalf of each
of such  corporations or otherwise,  all such other actions and things as may be
necessary or desirable to vest,  perfect or confirm any and all right, title and
interest in, 



                                     - 2 -
<PAGE>



to and under such rights,  properties,  privileges,  franchises  or
assets in the Surviving Corporation or otherwise to carry out this Agreement.

                                   ARTICLE II.

               CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES

         SECTION 2.1.    Conversion of Securities.

                  At the Effective Time, by virtue of the Merger and without any
action on the part of Acquiror, Merger Sub, the Company or the holders of any of
the following securities:

                  (a) Common Stock.  Each share of common stock,  par value $.01
per share, of the Company  ("Common  Stock")  (excluding any shares described in
Sections  2.1(c)  and  (d))  issued  and  outstanding  immediately  prior to the
Effective  Time shall cease to be  outstanding  and shall be converted  into and
exchanged  for the right to receive  the number of fully paid and  nonassessable
shares of common  stock,  par value  $0.01 per  share,  of  Acquiror  ("Acquiror
Shares") equal to the Exchange  Ratio defined  below.  All such shares of Common
Stock shall cease to be  outstanding  and shall  automatically  be canceled  and
retired and shall cease to exist, and each certificate previously evidencing any
such  shares  shall  thereafter  represent  only the right to receive the Merger
Consideration  as  described  below.  The  holders  of  certificates  previously
evidencing  such shares of Common  Stock  outstanding  immediately  prior to the
Effective  Time shall  cease to have any rights  with  respect to such shares of
Common  Stock,  except  as  otherwise  provided  herein  or by  law.  Each  such
certificate previously evidencing such shares of Common Stock shall be exchanged
for the number of shares previously  evidenced by the canceled  certificate upon
the surrender of such  certificate in accordance  with the provisions of Section
2.2, multiplied by the Exchange Ratio.

                  The Exchange Ratio shall be as follows:

                  (i) if the Determination  Price shall be less than $24.458 but
                  greater than $16.305, the Exchange Ratio shall be the quotient
                  obtained by dividing $17.50 by the Determination Price,

                  (ii) if the  Determination  Price shall be equal to or greater
                  than $24.458, the Exchange Ratio shall be 0.71553 and

                  (iii)  if the  Determination  Price  shall be equal to or less
                  than $16.305, the Exchange Ratio shall be 1.07329.

                  "Determination   Price"   shall   mean  the   average  of  the
Volume-Weighted  Average  Trading Prices of Acquiror  Shares for the twenty (20)
consecutive  trading  days on which  trading of Acquiror  Shares  occurs (each a
"Trading  Day")  (the  "Averaging  Period")  ending  on the  tenth  trading  day
immediately  prior to the Closing  Date for the  Merger,  rounded to the nearest
one-hundred  thousandth  (or  if  there  shall  not  be  a  nearest  one-hundred
thousandth, to the next higher one-hundred thousandth). "Volume-Weighted Average
Trading Price" means, for any Trading Day, an amount equal to (i) the cumulative
sum, for each trade of Acquiror  Shares  during such 



                                     - 3 -
<PAGE>



Trading  Day on the New York Stock  Exchange,  Inc.  (the  "NYSE")  (or, if such
security  is  not  listed  on  the  NYSE,  such  other  principal   exchange  or
over-the-counter  market on which such  security is listed),  of the product of:
(x) the sale price times (y) the number of  Acquiror  Shares sold at such price,
divided by (ii) the total number of Acquiror Shares so traded during the Trading
Day.

                  (b) Company  Preferred Stock.  Subject to the other provisions
of this Section 2.1, each share of preferred stock, par value $.01 per share, of
the Company ("Preferred Stock"), issued and outstanding immediately prior to the
Effective  Time  (excluding  any shares  described in Sections  2.1(c) and (d)),
shall be  converted  into the right to  receive  the  number  of fully  paid and
nonassessable  Acquiror  Shares equal to the Exchange  Ratio  multiplied  by the
number of shares of Common  Stock into which such share of  Preferred  Stock was
convertible  immediately  prior to the Effective Time. The Company's Series A 8%
Cumulative Redeemable Preferred Stock ("Series A Preferred Stock"),  Series B 8%
Cumulative  Redeemable Preferred Stock ("Series B Preferred Stock") and Series C
6% Cumulative Redeemable Preferred Stock ("Series C Preferred Stock"),  shall be
referred to herein  collectively  as the  "Preferred  Stock." The Exchange Ratio
multiplied by the number of Acquiror Shares into which a share of each series of
the Company's Preferred Stock shall be converted in the Merger shall be referred
to herein  collectively  as the "Per Share Amounts" and  individually  as a "Per
Share Amount." The Common Stock and Preferred  Stock shall be referred to herein
collectively as the "Capital Stock."

                  All  such  shares  of  Preferred   Stock  shall  cease  to  be
outstanding and shall  automatically  be canceled and retired and shall cease to
exist,  and  each  certificate  previously  evidencing  any  such  shares  shall
thereafter  represent  only the right to  receive  the Merger  Consideration  as
described below. The holders of certificates  previously  evidencing such shares
of Preferred  Stock  outstanding  immediately  prior to the Effective Time shall
cease to have any rights with respect to such shares of Preferred Stock,  except
as  otherwise  provided  herein  or by law.  Each  such  certificate  previously
evidencing  such shares of Preferred Stock shall be exchanged for the applicable
Per Share Amount multiplied by the number of shares previously  evidenced by the
canceled  certificate  upon the surrender of such certificate in accordance with
the provisions of Section 2.3, without interest.

                  (c) Acquiror-Owned  Shares. All shares of capital stock of the
Company  owned,  directly or  indirectly,  by Acquiror,  Merger Sub or any other
Acquiror   Subsidiary  (as  defined  in  Section  5.1)  shall  be  canceled  and
extinguished  without any conversion thereof and no amount shall be delivered or
deliverable in exchange therefor;

                  (d) Treasury Stock. All shares of capital stock of the Company
held in the  treasury of the Company  immediately  prior to the  Effective  Time
shall be canceled and extinguished  without any conversion thereof and no amount
shall be delivered or deliverable in exchange therefor;

                  (e) Merger Sub Stock.  Each share of common  stock,  par value
$.01 per share,  of Merger Sub issued and outstanding  immediately  prior to the
Effective  Time  shall  be  converted  



                                     - 4 -
<PAGE>



into  and  exchanged  for one (1)  duly  and  validly  issued,  fully  paid  and
nonassessable share of common stock of the Surviving Corporation; and

                  (f) No Fractional Shares. No certificate or scrip representing
a fractional  share of Acquiror  Shares shall be issued pursuant to this Section
2.1, and such  fractional  interests  shall not entitle the owner thereof to any
rights as a security  holder of  Acquiror.  All  holders  entitled  to receive a
fractional  share of Acquiror  Shares  shall be  entitled  to  receive,  in lieu
thereof,  cash (without  interest) in an amount equal to the product of (i) such
fractional part of Acquiror  Shares  multiplied by (ii) the last sales price per
Acquiror  Share on the NYSE  Composite  Transactions  reporting  system  for the
Closing Date. As promptly as possible after the  determination  of the amount of
cash, if any, to be paid to holders of fractional interests,  the Exchange Agent
shall so notify Acquiror,  and Acquiror shall cause the Surviving Corporation to
deposit such amount with the Exchange  Agent and shall cause the Exchange  Agent
to forward  payments to such holders of fractional  interests  subject to and in
accordance with the terms hereof.

                  (g)  Interest  and  Dividend  Shares.  To the extent  that any
interest  accrued or payable with  respect to the  Company's  8.75%  Convertible
Junior Subordinated Debentures due 2012 or any dividends accrued or payable with
respect to the Series C Preferred  Stock,  in each case which are payable in the
form of Common Stock,  have not been paid as of the Closing Date,  such interest
and dividends  shall be converted  into the right to receive the number of fully
paid and nonassessable Acquiror Shares equal to the Exchange Ratio multiplied by
the  number of  shares  of Common  Stock  that  would  have been  issued if such
interest or dividends had been paid immediately  prior to the Effective Time or,
to the extent such interest or dividends  cannot be so converted under the terms
of their  governing  instruments,  such interest and dividends  shall be paid in
Common Stock immediately  prior to the Effective Time and converted  pursuant to
Section 2.1(a).

                  (h) Rights.  Pursuant to the Acquiror's Rights Agreement dated
as of March 27, 1996 between  Acquiror and The Bank of New York, as Rights Agent
(the "Acquiror Rights Plan"),  the issuance of each Acquiror Share hereunder (or
under the Exchange Offer) shall be accompanied by the associated right under the
Acquiror Rights Plan.

                  (i) No  Liens  or  Calls  on  Acquiror  Shares.  Prior  to the
issuance of any  Acquiror  Shares  pursuant  to this  Agreement,  the  Principal
Stockholder  Agreement  or the  Exchange  Offer,  the Board of  Directors of the
Acquiror  shall, to the extent  permitted by Bermuda law, (i) irrevocably  waive
any lien that has arisen or may arise on any such Acquiror  Shares under Bermuda
law; (ii) irrevocably  declare exempt from Section 14 of Acquiror's bye-laws all
such Acquiror Shares; and (iii) irrevocably  declare that the Acquiror shall not
make any calls on any such Acquiror  Shares pursuant to Section 17 of Acquiror's
bye-laws.

         SECTION 2.2.    Payment.

                  (a) Exchange Agent. As of the Effective Time,  Acquiror shall,
on behalf of Merger Sub, deposit with an exchange agent  theretofore  designated
by the Company  and  Acquiror  (the  "Exchange  Agent"),  for the benefit of the
holders of shares of Capital Stock  



                                     - 5 -
<PAGE>



(excluding  any shares  described  in Sections  2.1(c) and (d)),  for payment in
accordance with this Article II, through the Exchange Agent, the Acquiror Shares
issuable pursuant to Sections 2.1(a) and (b) plus from time to time as necessary
cash in an amount sufficient to make payment for fractional shares under Section
2.1(f)  (such  Acquiror  Shares and cash being  hereinafter  referred  to as the
"Exchange  Fund").   Acquiror  shall  cause  the  Exchange  Agent,  pursuant  to
irrevocable  instructions,   to  deliver  the  Acquiror  Shares  (and  cash  for
fractional shares)  contemplated to be paid pursuant to Sections 2.1(a), (b) and
(f) out of the Exchange  Fund. The Exchange Fund shall not be used for any other
purpose.

                  (b) Payment Procedures. Promptly after the Effective Time, but
in no event later than five (5) business days  thereafter,  Acquiror shall cause
the Exchange Agent to mail to each record holder,  as of the Effective  Time, an
outstanding   certificate   (each  a   "Certificate"   and   collectively,   the
"Certificates")   that  immediately   prior  to  the  Effective  Time  evidenced
outstanding  shares of Capital Stock (excluding any shares described in Sections
2.1(c)  and (d));  a form  letter of  transmittal  and  instructions  for use in
effecting the surrender of the Certificates for payment therefor. Upon surrender
to the Exchange Agent of a Certificate, together with such letter of transmittal
duly executed, and any other required documents,  the holder of such Certificate
shall be entitled to receive in exchange  therefor the applicable  consideration
set forth in Section  2.1 (the  "Merger  Consideration"),  and such  Certificate
shall forthwith be canceled. Until surrendered in accordance with the provisions
of this Section 2.2, each Certificate  shall represent for all purposes only the
right to receive the applicable  consideration set forth in Section 2.1, without
any  interest  thereon.  Acquiror  or the  Surviving  Corporation  shall pay any
transfer or other similar  taxes  required by reason of the issuance and receipt
by the former  stockholders  of the Company of Acquiror  Shares  pursuant to the
provisions of this Article II.

                  (c) No Further Rights in Stock.  All Acquiror Shares paid upon
conversion of the shares of Capital  Stock in accordance  with the terms of this
Article II shall be deemed to have been paid in full  satisfaction of all rights
pertaining to such shares of Capital Stock.

                  (d)  Termination of Exchange Fund. Any portion of the Exchange
Fund that remains  undistributed to the holders of Capital Stock for one hundred
eighty (180) days after the Effective Time shall be delivered to Acquiror,  upon
demand, and any holders of Capital Stock that have not theretofore complied with
this Article II shall  thereafter  look only to the  Surviving  Corporation  and
Acquiror for the Merger Consideration to which they are entitled.

                  (e)  No   Liability.   Neither   Acquiror  nor  the  Surviving
Corporation  shall be liable to any  holder of shares of  Capital  Stock for any
Acquiror  Shares  or  cash  delivered  to a  public  official  pursuant  to  any
applicable abandoned property, escheat or similar law.

                  (f) Lost, Stolen or Destroyed  Certificates.  In the event any
Certificate  evidencing  shares of Capital Stock shall have been lost, stolen or
destroyed, upon the making of an affidavit setting forth that fact by the person
claiming  such lost,  stolen or  destroyed  Certificate  and the  granting  of a
reasonable  indemnity against any claim that may be made against Acquiror or the
Exchange  Agent  with  respect to such  Certificate,  Acquiror  shall  cause the
Exchange  Agent to pay to such person the Merger  Consideration  with respect to
such lost, stolen or destroyed Certificate.




                                     - 6 -
<PAGE>



         SECTION 2.3.    Company Options; Stock Purchase Plan; Warrants.

                  (a)  Company   Options.   As  of  the  Effective   Time,  each
outstanding  stock  option (an  "Option")  to purchase  shares of Common  Stock,
including without limitation those granted under the Company's 1986 Stock Option
Plan, 1997 Stock Option Plan and Non-Employee Directors' Stock Option Plan, each
as amended  to the date of this  Agreement  (collectively,  the  "Company  Stock
Option Plans"), shall be converted into an option to acquire Acquiror Shares, as
provided in this  Section.  Following  the  Effective  Time,  each Option  shall
continue  to have,  and shall be subject  to, the terms and  conditions  of each
agreement  pursuant to which such Option was  subject  immediately  prior to the
Effective Time (including,  in the case of each Option granted under the Company
Stock Option Plans, the terms and conditions of the Company Stock Option Plans),
except that (A) each  Option  shall be  exercisable  for that number of Acquiror
Shares  equal to the  product  of (1) the  aggregate  number of shares of Common
Stock for which  such  Option was  exercisable  multiplied  by (2) the  Exchange
Ratio,  provided,  however, that no Option shall be exercisable for a fractional
Acquiror  Share,  and the  holder  of an  Option  exercisable  for a  fractional
Acquiror Share shall be entitled to receive,  upon exercise  thereof,  an offset
against the aggregate  exercise price of the Option being  exercised  therewith,
such offset to be determined by multiplying  the fraction of a Acquiror Share to
which a holder of an Option would be entitled to receive times the excess of the
closing  price  of the  Acquiror  Share as  reported  on the NYSE on the date of
exercise  over the  exercise  price of such Option;  (B) the exercise  price per
share of Acquiror Shares issuable  pursuant to each Option shall be equal to the
aggregate  exercise  price of such Option at the  Effective  Time divided by the
number of shares of Acquiror  Shares for which such Option shall be  exercisable
as determined in accordance with the preceding  clause (A),  rounded to the next
highest  whole  cent,  if  necessary;  and (C)  each  outstanding  Option  shall
accelerate and be exercisable, if not vested and exercisable at such time to the
extent,  and only to the extent,  provided in Schedule 2.3.  Except as set forth
herein,  the assumption and substitution of options as provided herein shall not
give the  holders of such  options  additional  benefits or  additional  vesting
rights  which  they did not have  immediately  prior  to the  Effective  Time or
relieve the  holders of any  obligations  or  restrictions  applicable  to their
options or the shares  obtainable  upon exercise of the options.  The adjustment
provided  herein with respect to any Options that are "incentive  stock options"
as defined in the Internal  Revenue Code of 1986,  as amended (the "Code") shall
be and is intended to be effected in a manner that is consistent  with continued
treatment of such Options as "incentive  stock  options"  under of the Code. The
Company  Stock  Option  Plans shall be assumed by Acquiror  with  respect to all
outstanding  Options,  and no further options shall be granted under the Company
Stock Option Plans after the Effective Time.

                  Acquiror shall (i) file one or more registration statements on
Form S-8 (or  amend  existing  registration  statements  on Form  S-8) to become
effective as soon as  practicable  after the Effective  Time with respect to the
Acquiror Shares subject to Options granted under the Company Stock Option Plans;
(ii)  use  all  reasonable   efforts  to  maintain  the  effectiveness  of  such
registration  statements  (and maintain the current  status of the prospectus or
prospectuses  contained therein) for so long as such options remain outstanding;
and (iii)  promptly  prepare and submit to the NYSE  applications  covering  the
Acquiror Shares subject to such Options and use commercially  reasonable efforts
to cause such securities to be approved for listing on or prior to the Effective
Time, subject to official notice of issuance.




                                     - 7 -
<PAGE>



                  Acquiror  shall,  on  behalf of Merger  Sub,  take such  other
actions as are reasonably necessary to revise and adjust each Option as provided
in this  Section,  including  providing  the  holder  of each  Option as soon as
practicable  after the Effective  Time with an appropriate  option  agreement or
amendment to existing option agreement. Acquiror shall take all corporate action
reasonably  necessary to reserve for  issuance a  sufficient  number of Acquiror
Shares for  delivery  upon the  exercise  of  Options.  To the  extent  that the
provisions of this Section 2.3(a) require amendments to the Company Stock Option
Plans,  the Company shall take all actions  necessary to make such amendments to
allow for the treatment of Options as provided for in this Section 2.3(a).

                  (b) Employee  Stock  Purchase  Plan.  Effective as of the last
trading day of the Common Stock prior to the Effective Time, the then applicable
Payroll  Deduction  Period,  as defined in the  Company's  1996  Employee  Stock
Purchase Plan (the  "Employee  Stock  Purchase  Plan"),  shall be terminated and
shall be deemed to have ended on the last day of the last payroll  period ending
prior to the Effective Time; and the rights of each participating employee shall
be deemed to be  automatically  exercised  as of such  last  trading  day of the
Common  Stock,  as  provided  in  Sections  10 and 26(c) of the  Employee  Stock
Purchase Plan.

                  (c)  Warrants.  As of the  Effective  Time,  each  outstanding
warrant (a "Warrant") to purchase shares of Common Stock shall be converted into
a warrant to acquire Acquiror Shares, as provided in this Section. Following the
Effective  Time,  each Warrant shall  continue to have, and shall be subject to,
the terms and  conditions of each  agreement  pursuant to which such Warrant was
subject  immediately  prior to the Effective  Time,  except as set forth in this
Section  and except that (A) each such  Warrant  shall be  exercisable  for that
number of whole Acquiror Shares equal to the product of (x) the aggregate number
of shares of Common Stock for which such Warrant was  exercisable  multiplied by
(y) the Exchange Ratio; provided,  however, that no Warrant shall be exercisable
for a fractional  Acquiror Share, and the holder of a Warrant  exercisable for a
fractional  Acquiror Share shall be entitled to receive,  upon exercise thereof,
an offset against the aggregate  exercise  price of the Warrant being  exercised
therewith,  such  offset to be  determined  by  multiplying  the  fraction of an
Acquiror Share to which a holder of a Warrant would be entitled to receive times
the excess of the closing price of the Acquiror Share as reported on the NYSE on
the date of  exercise  over the  exercise  price  of such  Warrant,  and (B) the
exercise  price per Acquiror  Share  issuable  pursuant to such Warrant shall be
equal to the  aggregate  exercise  price of such Warrant at the  Effective  Time
divided  by the  number of  Acquiror  Shares  for which  such  Warrant  shall be
exercisable as determined in accordance with the preceding  clause (A),  rounded
to the next highest whole cent, if necessary.

                  Acquiror  shall,  on  behalf of Merger  Sub,  take such  other
actions  as are  reasonably  necessary  to revise  and  adjust  each  Warrant as
provided in this Section, including providing the holder of each Warrant as soon
as practicable after the Effective Time with an appropriate warrant agreement or
amendment  to existing  warrant  agreement.  Acquiror  shall take all  corporate
action  reasonably  necessary  to reserve for  issuance a  sufficient  number of
Acquiror Shares for delivery upon the exercise of Warrants.




                                     - 8 -
<PAGE>



         SECTION 2.4.    Stock Transfer Books.

                  At the Effective Time, the stock transfer books of the Company
with respect to all shares of capital  stock of the Company  shall be closed and
no further  registration  of  transfers  of such  shares of capital  stock shall
thereafter  be made on the  records of the  Company.  On or after the  Effective
Time,  if any  Certificates  for shares of Capital Stock  (excluding  any shares
described in Sections 2.1(c) and (d)) are presented to the Exchange  Agent,  the
Surviving  Corporation or Acquiror for any reason,  such  Certificates  shall be
canceled  and  exchanged  as provided in this  Article II,  except as  otherwise
provided by law.

         SECTION 2.5.    Certain Adjustments.

                  If  between  the  date  hereof  and the  Effective  Time,  the
outstanding  shares of Capital Stock or of Acquiror Shares shall be changed into
a   different   number   of   shares   by   reason   of  any   reclassification,
recapitalization,  split-up,  combination or exchange of shares, or any dividend
payable in stock or other  securities  shall be declared  thereon  with a record
date within such period,  the Exchange  Ratio shall be adjusted  accordingly  to
provide to the holders of Capital Stock the same economic effect as contemplated
by this Agreement prior to such  reclassification,  recapitalization,  split-up,
combination,  exchange or dividend;  provided,  however, that in the event that,
prior to the Effective Time,  Acquiror  consummates any merger,  amalgamation or
consolidation  as a result of which Acquiror  Shares being issued  hereunder are
neither  registered  with  the SEC  pursuant  to  Section  12(b) or 12(g) of the
Exchange  Act (as  defined  below)  nor  converted  into the  right  to  receive
securities so registered,  the Exchange Ratio shall be determined  assuming that
the  Volume-Weighted  Average Trading Price was equal to the per share amount of
consideration  a  common  stockholder  of  Acquiror  received  on  the  date  of
consummation of such transaction.

                                  ARTICLE III.

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

                  The Company  hereby  represents  and  warrants to Acquiror and
Merger Sub as follows:

         SECTION 3.1.    Organization and Qualification; Subsidiaries.

                  (a) The Company and each  Subsidiary (as defined below) of the
Company   (each  a  "Company   Subsidiary"   and   collectively,   the  "Company
Subsidiaries") is a corporation or partnership duly organized,  validly existing
and in good standing under the laws of the jurisdiction of its organization. The
Company and each Company  Subsidiary is duly  qualified to conduct its business,
and is in good  standing,  in  each  jurisdiction  where  the  character  of its
properties owned,  operated or leased or the nature of its activities makes such
qualification  necessary,  except  for  such  failures  which  would  not in the
aggregate have a Company Material Adverse Effect (as defined below). The Company
and each Company Subsidiary has the requisite corporate or partnership power and
authority and any necessary governmental authority, franchise, license or permit
to own,  operate,  lease  and  otherwise  to hold and  operate  its  assets  and




                                     - 9 -
<PAGE>



properties  and to carry on its  businesses as now being  conducted,  except for
such  failures  which  would not have a Company  Material  Adverse  Effect.  The
Company has no Subsidiaries (as defined below) or any equity or similar interest
in any entity  other than those listed in Schedule  3.1.  Except as set forth in
Schedule  3.1,  each Company  Subsidiary  is a  wholly-owned  direct or indirect
subsidiary of the Company.  As used herein,  the term "Company  Material Adverse
Effect"  means any material  adverse  effect on the business  (where  "business"
shall be deemed  to  include  the Orion 1  satellite  and the  proposed  Orion 2
satellite and Orion 3 satellite),  assets or condition (financial or otherwise),
liabilities or operations of the Company and the Company Subsidiaries taken as a
whole.

                  (b) For  purposes of this  Agreement,  a  "Subsidiary"  of any
person means any corporation,  partnership,  joint venture or other legal entity
of which  such  person  (either  alone or  through  or  together  with any other
Subsidiary) (i) owns, directly or indirectly, fifty percent (50%) or more of the
capital stock,  partnership  interests or other equity  interests the holders of
which are generally  entitled to vote for the election of the board of directors
or other governing body of such corporation, partnership, joint venture or other
legal  entity;  or (ii)  possesses,  directly or  indirectly,  control  over the
direction of  management  or policies of such  corporation,  partnership,  joint
venture or other legal entity (whether through  ownership of voting  securities,
by agreement or otherwise).

         SECTION 3.2.    Certificate of Incorporation and Bylaws.

                  The Company has  heretofore  delivered  to Acquiror a complete
and correct copy of the certificate or articles of incorporation  and the bylaws
of the Company and each Company Subsidiary that is a corporation,  and a correct
copy  of the  partnership  agreement  for  each  Company  Subsidiary  that  is a
partnership,  each as amended to date.  Each such  certificate  or  articles  of
incorporation,  bylaws and  partnership  agreement  is in full force and effect.
Neither the Company nor any Company  Subsidiary  is in  violation  of any of the
provisions of its respective certificate or articles of incorporation, bylaws or
partnership agreement.

         SECTION 3.3.    Capitalization.

                  The authorized  capital stock of the Company  consists,  as of
September  30,  1997,  of:  (a)  40,000,000  shares  of Common  Stock,  of which
11,675,436  shares are issued and  11,406,162  shares are  outstanding;  and (b)
1,000,000 shares of Preferred Stock, of which 15,000 shares have been designated
as Series A  Preferred  Stock,  5,000  shares have been  designated  as Series B
Preferred  Stock and 150,000  shares have been  designated as Series C Preferred
Stock, with 13,845 shares of Series A Preferred Stock,  4,295 shares of Series B
Preferred  Stock and 123,172 shares of Series C Preferred Stock being issued and
outstanding.

                  As of September 30, 1997, (i) 2,022,573 shares of Common Stock
were  reserved for issuance upon the exercise of Options  outstanding  under the
Company  Stock Option  Plans,  500,000  shares of Common Stock were reserved for
issuance  under the  Company's  1996  Employee  Stock  Purchase Plan and 100,000
shares of Common Stock were  reserved for issuance  under the  Company's  401(k)
Plan;  (ii)  9,088,300  shares of Common  Stock were  reserved  for  purposes of
effecting  conversions  of Preferred  Stock into Common Stock;  (iii)  4,285,714
shares



                                     - 10 -
<PAGE>



of Common  Stock were  reserved for  purposes of  effecting  conversions  of the
Company's  Convertible Junior Subordinated  Debentures due February 1, 2012 (the
"Convertible  Debentures")  into  Common  Stock;  and (iv)  961,238  shares were
issuable  (and were  reserved for  issuance)  upon the  exercise of  outstanding
warrants and options other than those referred to in clauses (i) and (ii) above.
In addition,  Common Stock has been reserved for issuance in payment of interest
on Convertible Debentures and dividends on Series C Preferred Stock.

                  As of the date hereof, there are no bonds,  debentures,  notes
or other  indebtedness  having  the  right to vote on any  matters  on which the
Company's stockholders may vote issued or outstanding.

                  Since  June 30,  1997,  no shares of  Capital  Stock have been
issued,  except for shares of Common  Stock  issued upon the exercise of options
granted  under the Company's  Stock Option Plans,  shares of Common Stock issued
pursuant to the Company's Employee Stock Purchase Plan or 401(k) Plan and shares
of Common Stock  issued upon  conversion  of  Preferred  Stock and in payment of
interest on Preferred  Stock and the Convertible  Debentures.  Other than as set
forth above, except as set forth in Schedule 3.3, there are no options, warrants
or other  rights,  agreements,  arrangements  or  commitments  of any  character
relating to the issued or unissued  capital  stock of the Company or any Company
Subsidiary or obligating the Company or any Company Subsidiary to issue, deliver
or sell any  shares  of  capital  stock of, or other  equity  interests,  in the
Company or any Company  Subsidiary.  Set forth on Schedule  3.3 is a list of all
options,  warrants or other rights,  agreements,  arrangements or commitments of
any character relating to the issued or unissued capital stock of the Company or
any Company  Subsidiary  granted by the Company or any Company  Subsidiary since
June 30, 1997.

                  Except as set forth in Schedule 3.3,  there are no outstanding
contractual  obligations  of the  Company  to  repurchase,  redeem or  otherwise
acquire  any shares of its  capital  stock.  All of the  issued and  outstanding
shares of Capital  Stock have been duly  authorized  and validly  issued and are
fully paid and nonassessable and not subject to preemptive rights. Except as set
forth in Schedule  3.3, all of the  outstanding  shares of capital stock of each
Company  Subsidiary that is a corporation  have been duly authorized and validly
issued  and  are  fully  paid  and  nonassessable,  and  all of the  partnership
interests  of each  Company  Subsidiary  that is a  partnership  have  been duly
authorized  and  validly  issued  and,  except  pursuant  to  provisions  of the
applicable partnership  agreement,  are fully paid. With respect to each Company
Subsidiary that is a partnership,  all of the partnership interests owned by the
Company, and with respect to each Company Subsidiary that is a corporation,  all
of the  outstanding  shares of capital stock owned by the Company,  are owned by
the  Company  free  and  clear  of  any  liens,  security  interests,   pledges,
agreements, claims, charges or encumbrances (collectively, the "Encumbrances").

         SECTION 3.4.    Authority.

                  The Company has the necessary corporate power and authority to
enter into this Agreement and the Principal  Stockholder  Agreement and, subject
to obtaining any necessary  stockholder  approval of the Merger,  to perform its
obligations   hereunder  and  thereunder  and  to  consummate  the  transactions
contemplated  hereby and thereby.  Except for the approval of this  Agreement by
the  stockholders  of the Company in accordance with Delaware Law, the execution




                                     - 11 -
<PAGE>



and delivery of this  Agreement and the Principal  Stockholder  Agreement by the
Company and the  consummation  by the Company of the  transactions  contemplated
hereby  and  thereby  have been duly and  validly  authorized  by all  necessary
corporate  action and no other corporate  proceedings on the part of the Company
are  necessary  to  authorize  this  Agreement  and  the  Principal  Stockholder
Agreement or to consummate  the  transactions  contemplated  hereby and thereby.
Each of this  Agreement  and the Principal  Stockholder  Agreement has been duly
executed  and  delivered by the Company  and,  assuming  the due  authorization,
execution and delivery by Acquiror and Merger Sub,  constitutes  a legal,  valid
and binding obligation of the Company, enforceable in accordance with its terms,
except  as  such  enforceability  may  be  limited  by  bankruptcy,  insolvency,
reorganization,  moratorium  and other  similar  laws of  general  applicability
relating to or affecting  creditors'  rights generally and by the application of
general principles of equity.

         SECTION 3.5.    No Conflict; Required Filings and Consents.

                  (a) The  execution  and  delivery  of this  Agreement  and the
Principal  Stockholder  Agreement by the Company do not, and the  performance by
the  Company  of  its  obligations   under  this  Agreement  and  the  Principal
Stockholder  Agreement will not, (i) conflict with or violate the certificate or
articles of incorporation, bylaws or partnership agreement of the Company or any
Company Subsidiary,  (ii) subject to obtaining the approvals and compliance with
the requirements set forth in Section 3.5(b),  conflict with or violate any law,
statute,  ordinance,  rule, regulation,  order, judgment or decree applicable to
the  Company  or any  Company  Subsidiary  or by which  any of their  respective
properties  is bound or affected,  or (iii) except as set forth in Schedule 3.5,
result in any  breach of or  constitute  a default  (or an event  which  with or
without notice or lapse of time or both would become a default)  under,  or give
to others any rights of termination, amendment, acceleration or cancellation of,
or result in the creation of an  Encumbrance  on any of the properties or assets
of the Company or any Company Subsidiary pursuant to, any note, bond,  mortgage,
indenture,  contract,  agreement,  lease,  license,  permit,  franchise or other
instrument  or  obligation  to which the Company or any Company  Subsidiary is a
party or by which the Company, any Company Subsidiary or any of their respective
properties or assets is bound or affected,  except,  in the case of clauses (ii)
and (iii) above, for any such conflicts, violations, breaches, defaults or other
alterations or occurrences  that would not prevent or delay  consummation of the
Merger in any material respect, or otherwise prevent the Company from performing
its obligations under this Agreement in any material respect, and would not have
a Company Material Adverse Effect.

                  (b)  The  execution  and  delivery  of this  Agreement  by the
Company does not, and the performance of this Agreement by the Company will not,
require any  consent,  approval,  authorization  or permit of, or filing with or
notification to, any governmental or regulatory  authority,  domestic or foreign
(each a "Governmental Entity"), by or with respect to the Company except (i) for
(A) applicable requirements,  if any, of the Securities Exchange Act of 1934, as
amended  (the  "Exchange  Act"),  the  Securities  Act of 1933,  as amended (the
"Securities Act"), state securities or "blue sky" laws ("Blue Sky Laws"),  state
takeover laws, the National Association of Securities Dealers, Inc. (the "NASD")
or the  Nasdaq  National  Market  ("Nasdaq"),  the  Hart-Scott-Rodino  Antitrust
Improvements Act of 1976, as amended (the "HSR Act"), the  Communications Act of
1934,  as  amended  (the  "Communications   Act"),  the  Federal  




                                     - 12 -
<PAGE>



Communications  Commission (the "FCC"),  Telekommunikationsgesetz  (TKG) and the
German  Telecommunications  Installations Act, (B) applicable  requirements,  if
any, of the consents, approvals, authorizations or permits described in Schedule
3.5, and (C) filing and recordation of appropriate  merger documents as required
by  Delaware  Law and (ii) where  failure to obtain  such  consents,  approvals,
authorizations or permits,  or to make such filings or notifications,  would not
prevent  or  delay  consummation  of the  Merger  in any  material  respect,  or
otherwise  prevent  the  Company  from  performing  its  obligations  under this
Agreement in any material respect, and would not have a Company Material Adverse
Effect.

         SECTION 3.6.    SEC Filings; Financial Statements.

                  (a) The  Company  (or  its  predecessor,  Constellation  Oldco
Services,  Inc.,  now a 100% owned Company  Subsidiary  ("Oldco")) has filed all
forms,  reports,  statements and other  documents  required to be filed with the
Securities and Exchange Commission (the "SEC") since August 4, 1995, the date of
Oldco's initial public offering,  and has heretofore  furnished to Acquiror,  in
the form  filed  with the SEC since  such  date,  together  with any  amendments
thereto, its (i) Annual Reports on Form 10-K, (ii) all Quarterly Reports on Form
10-Q, (iii) all proxy statements  relating to meetings of stockholders  (whether
annual or special),  (iv) all reports on Form 8-K, and (v) all other  reports or
registration  statements  filed by the Company  (collectively,  the "Company SEC
Reports").  As of their  respective  filing  dates,  the Company SEC Reports (i)
complied  as to form in all  material  respects  with  the  requirements  of the
Exchange  Act and the  Securities  Act,  and (ii) did not at the time  they were
filed  contain  any  untrue  statement  of a  material  fact or omit to  state a
material fact required to be stated  therein or necessary to make the statements
therein,  in the light of the  circumstances  under  which they were  made,  not
misleading.

                  (b)  The  audited   consolidated   financial   statements  and
unaudited  interim  financial  statements of the Company included in the Company
SEC  Reports  comply  as to  form  in  all  material  respects  with  applicable
accounting  requirements and with the published rules and regulations of the SEC
with respect thereto. The financial statements,  including all related notes and
schedules,  contained in the Company SEC Reports (or  incorporated  by reference
therein)  present  fairly in all material  respects the  consolidated  financial
position  of the  Company  (or  Oldco,  as the  case  may be)  and  the  Company
Subsidiaries as at the respective dates thereof and the consolidated  results of
operations and cash flows of the Company (or Oldco,  as the case may be) and the
Company  Subsidiaries  for the periods  indicated,  in accordance with generally
accepted  accounting  principles  applied on a consistent  basis  throughout the
periods  involved  (except as may be noted  therein)  and subject in the case of
interim financial statements to normal year-end adjustments.

         SECTION 3.7.    Absence of Certain Changes or Events.

                  Except as set forth in Schedule 3.7,  since June 30, 1997, the
Company and the Company  Subsidiaries have not incurred any material  liability,
except in the ordinary course of business  consistent with their past practices,
and the Company and the Company  Subsidiaries  have conducted  their  respective
businesses in the ordinary course  consistent with their past practices.  Except
as set forth in Schedule 3.7, since June 30, 1997, there has not been any change
in the  business  (where  "business"  shall be  deemed  to  include  the Orion 1
satellite and the 



                                     - 13 -
<PAGE>



proposed  Orion 2 satellite  and Orion 3  satellite),  condition  (financial  or
otherwise) or results of operations of the Company and the Company Subsidiaries,
including any transaction,  commitment,  dispute,  damage,  destruction or loss,
whether or not covered by insurance, or other event of any character (whether or
not in the ordinary course of business) individually or in the aggregate,  which
has had, or is reasonably  likely to have, a Company  Material  Adverse  Effect,
other than (i) any change arising out of matters of a general  economic  nature,
or (ii) any change  arising out of matters  affecting  the  satellite  industry,
either  international  or national,  generally  (including,  but not limited to,
competition from other satellite  systems or service  providers and legislation,
rulemaking,  regulation or  regulatory  practice by any  governmental  agency or
international  rulemaking  body  such  as  the  International  Telecommunication
Union).

         SECTION 3.8.    Absence of Litigation.

                  Except as set forth in  Schedule  3.8,  as of the date  hereof
there are (a) no claims, actions, suits, investigations,  or proceedings pending
or, to the  Company's  knowledge,  threatened  against the Company or any of the
Company Subsidiaries before any court, administrative,  governmental,  arbitral,
mediation or regulatory  authority or body,  domestic or foreign,  that would be
reasonably  likely to have a Company Material Adverse Effect,  or that challenge
or  seek  to  prevent,  enjoin,  alter  or  materially  delay  the  transactions
contemplated hereby, and (b) no judgments, decrees, injunctions or orders of any
Governmental Entity or arbitrator outstanding against the Company or any Company
Subsidiary that would  reasonably be likely to have a Company  Material  Adverse
Effect.

         SECTION 3.9.    Licenses and Permits; Compliance with Laws.

         Except as set forth in Schedule 3.9:

                  (a) Set forth on Schedule  3.9(a) is a true and complete  list
of all  permits,  licenses  and  approvals  (none of which has been  modified or
rescinded  and all of which are in full force and effect) from all  Governmental
Entities  held by the  Company  ("Company  Permits"),  except  in each  case for
Company  Permits whose absence or revocation  would not  individually  or in the
aggregate have a Company  Material  Adverse Effect (all of the foregoing,  which
are  denoted  by an  asterisk  on  Schedule  3.9(a),  being  referred  to herein
collectively as the "Key Company  Permits");  provided,  however,  that Schedule
3.9(a) shall not be required to include a list of Company Permits for Very Small
Aperture  Terminals  (VSATs).  The Key Company Permits listed on Schedule 3.9(a)
include,  without  limitation,  all Key Company Permits (i) issued by the FCC to
the Company or any Company Subsidiary, (ii) authorizing the construction, launch
or operation in their  assigned  orbital  locations  of Company  Satellites  (as
defined  below) or  construction  and operation of Company  Ground  Stations (as
defined below),  including without limitation the agreement with the Republic of
the Marshall Islands and the license granted by the Federal Republic of Germany,
and (iii)  issued to the  Company  or any  Company  Subsidiary  by  Governmental
Entities that regulate broadcasting or communications services,  authorizing the
Company or the Company  Subsidiaries to provide  broadcasting or  communications
services.  The  parties  acknowledge  that  (i) the  approval  for  the  Orion 2
satellite is a conditional  approval subject to the conditions  described in the
orders and  agreements  relating  thereto and (ii) the  approval for the Orion 3
satellite  results from an agreement  with the Republic of the Marshall



                                     - 14 -
<PAGE>



Islands (and no further  regulatory  approvals from the Republic of the Marshall
Islands are necessary for such construction, launch and operation of the Orion 3
satellite).

                  Schedule  3.9(a) also sets forth a true and  complete  list of
all  Company  Permits  issued by the FCC,  the  Marshall  Islands or the Federal
Republic of Germany (including  applications therefor) which are not Key Company
Permits or VSATs ("Other Permits"). To the best of the Company's knowledge,  the
Other  Permits  are in full  force and  effect  or, in the case of  applications
therefor,  the  Company  knows of no reason why the same  should not be granted.
Schedule  3.9(a)  also  sets  forth a true  and  complete  list  of all  pending
applications  for Company Permits that would be Key Company Permits  required to
be listed in such Schedule if issued or granted and if the satellites which they
relate were owned by the Company, all pending applications by the Company or any
Company  Subsidiary with the FCC and all pending  applications by the Company or
any Company  Subsidiary  for  modification,  extension or renewal of Key Company
Permits (the "Key Applications").

                  The  Key  Company  Permits  held  by the  Company  or  Company
Subsidiaries  and listed on Schedule  3.9(a)  include all permits,  licenses and
approvals from all Governmental Entities which are necessary for the Company and
the Company  Subsidiaries  to (i)  operate the Orion 1 satellite  in its present
orbital location and provide communications services (and broadcast services, if
any are  provided by the  Company or Company  Subsidiaries)  therefrom,  operate
ground stations  communicating  therewith,  including,  without limitation,  the
related  broadcasting  facility assets consisting of land,  building,  fixtures,
equipment,  improvements (if any) and telemetry,  tracking and control equipment
that is owned or leased by the Company or a Company  Subsidiary (each a "Company
Ground Station" and collectively the "Company Ground Stations"),  and own, lease
and  operate  their  properties  and to  carry on their  business  as  currently
conducted using the Orion 1 satellite,  and (ii) construct,  launch and operate,
at their assigned orbital locations, the proposed Orion 2 and Orion 3 satellites
(collectively with the Orion 1 satellite,  the "Company Satellites"),  except as
set forth in the last sentence of the first paragraph of this subsection (a) and
in each case for permits,  licenses and  approvals  whose  absence or revocation
would not  individually  or in the  aggregate  have a Company  Material  Adverse
Effect (without giving effect to any limitation as of  "materiality" or "Company
Material Adverse Effect" in the definition of Key Company Permits).

                  Each of the Company and the Company Subsidiaries has fulfilled
and complied in all material respects with its obligations under each of the Key
Company Permits and the Key Applications  owned, held or possessed by it, and no
event has occurred or condition or state of facts exists which  constitutes  or,
after  notice or lapse of time or both,  would  constitute  a breach or  default
under any Key Company  Permit or Key  Applications  and which  permits or, after
notice or lapse of time or both,  would permit  revocation or termination of any
such Key  Company  Permit or Key  Application,  and  neither the Company nor any
Company  Subsidiary  has  received or has  knowledge  of any  written  notice of
cancellation  or default or of any dispute  concerning any Key Company Permit or
Key  Application,  or of any such event,  condition or state of facts that would
constitute a default the effect of which would be revocation or  termination  of
such Key Company  Permit or Key  Application,  except,  in each case, any of the
foregoing  which  individually  or in the  aggregate  would  not have a  Company
Material Adverse Effect.  Each of the Key Company Permits is validly held by the
entities listed on Schedule 3.9(a),  is in full force and 




                                     - 15 -
<PAGE>



effect in all material respects, is free and clear of all liens (other than
permitted liens), is unimpaired in any material respect by acts or omissions of
the Company or its employees, partners or affiliates, will expire on the date
shown on Schedule 3.9(a), is valid for the balance of its current term, and is
not subject to any restriction or condition that limits in any material respect
the full operation of the Company's and Company Subsidiaries' business as now
operated.

                  The Company has not  received  any  complaint  that any of the
Company   Satellites  or  Company  Ground  Stations  is  causing   objectionable
interference to the transmissions or reception of any other radio communications
facility,  and to the Company's best  knowledge,  no other radio  communications
facility is causing objectionable  interference to the transmissions from or the
receipt of signals by any Company  Satellite or Company Ground Station.  None of
the Key Company  Permits  issued  prior to the date hereof is the subject of any
pending renewal application;  no renewal of any Key Company Permit issued by the
FCC  would  constitute  a  major  environmental   action  under  the  rules  and
regulations  promulgated  by the FCC (the "FCC Rules"),  excluding the impact of
the FCC's new RF radiation  rules  adopted by the FCC in the ET Docket No. 93-62
on August 1,  1996;  and the  Company  is not  aware of any  reason  why the Key
Company Permits will not be renewed in the ordinary course or why any of the Key
Company Permits might be revoked.  The Company knows of the existence of no fact
that,  under any Key Company  Permits and present law  relating  thereto,  would
disqualify the Company from consummating the Merger within the time contemplated
herein (other than matters disclosed on Schedule 5.14).

                  All  information  contained in any pending Key  Application is
true, correct and complete in all material respects.  The Company has duly filed
or caused to be filed with the FCC or any other Governmental Entity all required
material reports, statements, documents,  registrations,  filings or submissions
with  respect to the  operations  of the business of the Company and the Company
Subsidiaries,  the Key Company Permits, the Company's and Company  Subsidiaries'
ownership  of their  assets and the pending  applications  by the Company or any
Company  Subsidiary for Key Company  Permits or for  modification,  extension or
renewal of Company  Permits,  in each case as  required  by the FCC or any other
Governmental  Entity.  All such filings  complied in all material  respects with
applicable laws when made and no material  deficiencies  have been asserted with
respect to any such filings.

                  Except for  rulemaking  proceedings  affecting  the  satellite
industry in general, no judgment,  decree, order or notice of violation has been
issued by the FCC (or other  Governmental  Entity) which permits or contemplates
revocation,  modification  or termination  or any of the Key Company  Permits or
which would  result in any material  impairment  of any rights  thereunder.  The
business of the Company and the Company  Subsidiaries (where "business" shall be
deemed to include the Orion 1 satellite  and the proposed  Orion 2 satellite and
Orion 3 satellite),  is not being  conducted in violation of any applicable law,
statute,  ordinance,  regulation or judgment or any Key Company  Permit,  order,
decree, concession,  grant or other authorization of any Governmental Entity, in
each case except for violations  that,  individually or in the aggregate,  would
not be reasonably  likely to have a Company Material Adverse Effect.  Except for
rulemaking   proceedings   affecting  the  satellite  industry  in  general,  no
complaints,  proceedings or applications  are pending,  or to the Company's best
knowledge,  threatened,  at the FCC or any other Governmental Entity, that would
result in the  revocation,  forfeiture,  adverse  modification,  non-renewal  or
suspension  of any of the Key  Company  Permits,  the denial of any  pending Key
Application,  the issuance  against the Company or any Company  Subsidiary  of a
cease and desist order, or the imposition of any  administrative  actions by the
FCC or any 





                                     - 16 -
<PAGE>



other Governmental  Entity with respect to the Key Company Permits, in each case
that would have,  whether  individually or in the aggregate,  a Company Material
Adverse Effect.

                  (b)  Neither  the  Company  nor  any  Company   Subsidiary  or
affiliate has taken, is taking or will take, or has allowed or will allow on its
behalf to be taken,  any action which would have  violated or would  violate the
United  States   Foreign   Corrupt   Practices  Act  of  1977,   the  US  Export
Administration  Act, as  amended,  or any laws to which such party or persons is
subject, relating in each case to payments for the purpose of influencing an act
or  decision  of a  Governmental  Entity  or  government  official,  except  for
violations  that  individually  or in the  aggregate  would  not have a  Company
Material Adverse Effect; provided,  however, that nothing in this sentence shall
be deemed to  subject  any  party or  person to any law to which  such  party or
person  would not  otherwise  be  subject.  Each of the  Company and the Company
Subsidiaries  is in material  compliance with all domestic and, to the knowledge
of the Company,  foreign laws restricting or regulating the export of technology
to  foreign  countries,  except  for  violations  that  individually  or in  the
aggregate would not have a Company Material Adverse Effect.

                  (c) Schedule 3.9(c) contains a list of all  consultations  and
similar  arrangements  that have been effectuated  with INTELSTAT,  EUTELSAT and
other similar intergovernmental entities (collectively the "IGO Determinations")
with respect to the Company  Satellites  that are needed to operate the business
of the Company and the Company Subsidiaries as it is now being conducted. Except
as set  forth  on such  schedule,  the  Company  is not  aware  of any  material
difficulties  in obtaining  any other  determinations  from such  entities  with
respect to any satellite  now operated by the Company or any Company  Subsidiary
or for which the  Company or any  Company  Subsidiary  has applied for a Company
Permit,  except for those that individually or in the aggregate would not have a
Company Material Adverse Effect.

         SECTION 3.10.   Taxes.

                  Except as set forth in  Schedule  3.10,  the  Company  and the
Company  Subsidiaries  have  prepared  and  filed  on a  timely  basis  with all
appropriate  Governmental  Entities all material returns,  reports,  information
statements and other documentation in respect of Taxes that they are required to
file  on or  prior  to the  Closing  Date  or by  the  date  therefor  including
extensions,  and all such returns,  reports,  information  statements  and other
documentation are correct and complete in all material  respects.  Except as set
forth in Schedule  3.10, the Company and the Company  Subsidiaries  have paid in
full  all  Taxes  (other  than  Taxes,  the  failure  to pay  which  would  not,
individually or in the aggregate, have a Company Material Adverse Effect) due on
or before the Closing  Date and, in the case of  material  Taxes  accruing on or
before the  Closing  Date that are not due on or before the  Closing  Date,  the
Company has made  adequate  provisions  in its books and  records and  financial
statements  for such payment.  Except as set forth in Schedule 3.10, the Company
and the Company  Subsidiaries have withheld from payments made to its present or
former employees,  contractors,  officers and directors, creditor or other third
party,  all amounts  required by law to be withheld  except where the  liability
would not,  individually or in





                                     - 17 -
<PAGE>





the aggregate,  have a Company Material Adverse Effect, and has, where required,
remitted  such  amounts  within  the  applicable   periods  to  the  appropriate
Governmental  Entities.  In addition,  except as set forth in Schedule 3.10, (a)
there are no  assessments  of, or claims  against,  the  Company or the  Company
Subsidiaries with respect to Taxes, the liability for which would,  individually
or  in  the  aggregate,  have  a  Company  Material  Adverse  Effect,  that  are
outstanding; (b) no Governmental Entity is conducting an examination or audit of
the  Company or any  Company  Subsidiary  in respect  of Taxes and  neither  the
Company nor any Company  Subsidiary has received notice of any such  examination
or audit from any  Governmental  Entity;  and (c)  neither  the  Company nor any
Company  Subsidiary has executed or filed any agreement  extending the period of
assessment or collection of any Taxes which remain in effect. For the purpose of
this Agreement,  the term "Tax" (including,  with correlative meaning, the terms
"Taxes"  and  "Taxable")  shall  include,  except  where the  context  otherwise
requires,  all federal,  state,  local and foreign income,  profits,  franchise,
gross receipts, payroll, sales, employment, use, property, withholding,  excise,
occupancy  and other  taxes,  duties  or  assessments  or  claims of any  nature
whatsoever,  together  with all interest,  penalties and additions  imposed with
respect to such amounts.

         SECTION 3.11.   Intellectual Property.

                  Schedule  3.11 sets  forth a listing  and  description  of all
material domestic,  foreign, common law, registered and pending applications for
patents,  trademarks,  service marks, logos, slogans, designs, copyrights, trade
names, and all material  intellectual  property  licenses running to or from the
Company or any  Company  Subsidiary  relating  to the  Company's  or any Company
Subsidiaries'  businesses  or owned by the  Company or any  Company  Subsidiary.
Unless  expressly  set forth  otherwise  on Schedule  3.11,  the Company and the
Company  Subsidiaries  own (or where indicated on Schedule 3.11, have a right to
use), free and clear of any liens, security interests, encumbrances or claims of
others,  all  patents,  trademarks,  service  marks,  logos,  slogans,  designs,
copyrights,  tradenames,  design registrations,  and other intellectual property
listed  on  Schedule  3.11  and  any  trade  secrets,   know-how,   confidential
information,   material   computer   programs   (including   any  source  code),
documentation,  engineering and technical  drawings,  processes,  methodologies,
trade dress, mask works and technology,  in each case material to the conduct of
the business of the Company and the Company  Subsidiaries  taken as a whole (all
of the foregoing  items  collectively  referred to as the "Company  Intellectual
Property"). Except as set forth on Schedule 3.11, (a) no proceedings are pending
or, to the  Company's  knowledge,  threatened  in writing,  which  challenge the
validity of the  ownership by the Company  and/or any Company  Subsidiary of the
Company  Intellectual  Property;  (b)  the  Company  has  no  knowledge  of  any
infringement  or infringing use of any of the Company  Intellectual  Property or
licenses by any person or entity,  and the Company and the Company  Subsidiaries
have,  and as of the Closing Date will have,  good and valid title to all of the
Company  Intellectual  Property owned by the Company or Company Subsidiaries and
their  licenses  and other  rights to use will be adequate  for  conducting  the
businesses  of the Company  and the  Company  Subsidiaries  and  enforceable  in
accordance with their terms; (c) to the Company's knowledge,  no infringement of
any material intellectual property right or other proprietary right of any third
party has  occurred or will result in any way from the signing and  execution of
this  Agreement  or  the   consummation  of  any  or  all  of  the  transactions
contemplated hereby, and no written claim has been made by any third party based
upon  an  allegation  of  any  such  infringement;   (d)  the  material  Company



                                     

                                     - 18 -
<PAGE>





Intellectual  Property  is valid  and in full  force  and  effect  and no aspect
thereof  is  subject to any  outstanding  order,  ruling,  decree,  judgment  or
stipulation by or with any court,  arbitrator or administrative  agency; and (e)
there are no restrictions on the direct or indirect transfer of any license,  or
any interest therein,  held by the Company or any Company  Subsidiary in respect
of the Company Intellectual Property.

         SECTION 3.12.   Material Contracts.

                  (a) Schedule  3.12(a) sets forth a complete and correct  list,
as of the date of this  Agreement,  of all  agreements of the following  type to
which  the  Company  or a  Company  Subsidiary  is  a  party  or  may  be  bound
(collectively,  the "Company  Material  Contracts"):  (i) agreements filed as an
exhibit to the  Company  SEC  Reports  and each  agreement  that would have been
required to be filed as an exhibit to the Company SEC Reports if such  agreement
had been entered into as of the date of filing any such Company SEC Report; (ii)
employment, severance, termination,  consulting and retirement agreements; (iii)
loan agreements,  indentures, letters of credit, mortgages, notes and other debt
instruments  evidencing  indebtedness in excess of five hundred thousand dollars
($500,000), other than those relating to intercompany debt among the Company and
the Company Subsidiaries; (iv) agreements that require aggregate future payments
of more than five  hundred  thousand  dollars  ($500,000)  (other than  purchase
orders and sales contracts entered into in the ordinary course of business); (v)
agreements  involving  payments in excess of two hundred fifty thousand  dollars
($250,000) concerning any provisions with respect to a "change in control"; (vi)
material agreements with any key employee, director, officer or beneficial owner
(as determined  pursuant to Rule 13d-3 promulgated under the Exchange Act) of 5%
or more of the Company's Common Stock; and (vii) agreements for a remaining term
of five (5)  years or more  with any  customer  of the  Company  or any  Company
Subsidiary.

                  (b) Except as set forth in Schedule  3.12(b),  all the Company
Material  Contracts  are valid and in full force and  effect on the date  hereof
except to the  extent  they have  previously  expired in  accordance  with their
terms,  and  neither the  Company  nor any  Company  Subsidiary  has (or has any
knowledge that any party thereto has) violated any provision of, or committed or
failed to perform  any act which with or without  notice,  lapse of time or both
would  constitute  a default  under the  provisions  of,  any  Company  Material
Contract, except for defaults which, individually or in the aggregate, would not
reasonably  be  expected to have a Company  Material  Adverse  Effect.  True and
complete  copies  of all  Company  Material  Contracts  have been  delivered  to
Acquiror or made available for inspection by Acquiror.

                  (c)  As  of  August  31,  1997,  the  contracts,   agreements,
commitments,  arrangements, leases (including with respect to personal property)
that  represent  obligations of third parties to make payments to the Company or
any Company Subsidiary, as the case may be, in exchange for the sale or lease of
transponder  capacity,  have an aggregate stated amount of unpaid payments owing
to the Company or any Company  Subsidiary,  as the case may be, of approximately
$263 million over the remaining  stated term of such contracts  (the  "Backlog")
(prior to any  reserve for  doubtful  accounts or other  similar  allowances  or
deductions).  The Backlog represents amounts that,  assuming the due performance
by each party of its  obligations  under each contract and the  occurrence of no
event that would  permit  termination  of a contract  without  liability  to the
terminating  party,  will be due for, and will arise out of, bona fide sales and



                                     - 19 -
<PAGE>



delivery of goods,  performance  of services  and other  business  transactions,
unless the underlying contract thereto is properly terminated in accordance with
the terms thereof. Except as set forth on Schedule 3.12(c),  neither the Company
nor any Company  Subsidiary  is, or has received any notice or has any knowledge
that any other party is, in default in any material  respect  under any contract
representing  any  material  portion  of the  Backlog,  other  than (i)  payment
defaults under transponder lease agreements which are not more than 90 days past
due and (ii) defaults or terminations  under  transponder  lease agreements that
are promptly  replaced by  contracts  providing  for  reasonably  equivalent  or
superior backlog payments.

         SECTION 3.13.   Employee Benefit Plans.

                  (a)  Schedule  3.13 sets  forth a list of all of the  material
pension,  retirement,  profit-sharing,   deferred  compensation,  stock  option,
employee stock ownership,  severance pay,  vacation or bonus plans or agreements
or other  material  incentive  plans or agreements,  all other material  written
employee  programs,  arrangements or agreements and all other material  employee
benefit  plans or fringe  benefit  plans,  including,  without  limitation,  all
"employee benefit plans" as that term is defined in Section 3(3) of the Employee
Retirement  Income  Security Act of 1974,  as amended  ("ERISA")  (collectively,
"Benefit  Plans"),  currently  adopted,  maintained by, sponsored in whole or in
part  by,  or  contributed  to by the  Company  or  any  entity  required  to be
aggregated  with  the  Company  which is a member  of the  "controlled  group of
corporations" which includes the Company within the meaning of Section 414(b) or
(c) of the Code (each, a "Company Commonly  Controlled  Entity") for the benefit
of present and former  employees or directors of the Company and of each Company
Subsidiary  or their  beneficiaries,  or  providing  benefits to such persons in
respect of  services  provided to any such entity  (collectively,  the  "Company
Benefit Plans").  Any Company Benefit Plan which is an "employee pension benefit
plan," as that term is defined in Section  3(2) of ERISA,  is referred to herein
as a "Company ERISA Plan."

                  (b)  Each  of  the  Company   Benefit  Plans  intended  to  be
"qualified" within the meaning of Section 401(a) of the Code has been determined
by the  Internal  Revenue  Service  to be so  qualified  and,  to the  Company's
knowledge,  no  circumstances  exist that could  reasonably  be  expected by the
Company  to  result in the  revocation  of any such  determination.  Each of the
Company  Benefit Plans is in compliance  with the applicable  terms of ERISA and
the Code and any other  applicable  laws,  rules and  regulations  the breach or
violation  of which could  result in a material  liability to the Company or any
Company Commonly Controlled Entity.

                  (c) No Company ERISA Plan which is a defined  benefit  pension
plan has any "unfunded  current  liability,"  as that term is defined in Section
302(d)(8)(A)  of ERISA,  and the present  fair market value of the assets of any
such plan equals or exceeds the plan's  "benefit  liabilities,"  as that term is
defined in Section 4001(a)(16) of ERISA, when determined under actuarial factors
that would apply if the plan terminated in accordance with all applicable  legal
requirements.

                  (d) Except as disclosed in Schedule  3.13, no Company  Benefit
Plan is or has been a multiemployer  plan within the meaning of Section 3(37) of
ERISA (a  "Multiemployer  Plan").  Neither the Company nor any Company  Commonly
Controlled  Entity has completely or



                                     - 20 -
<PAGE>



partially withdrawn from any Multiemployer Plan. No termination liability to the
Pension   Benefit   Guaranty   Corporation   or  withdrawal   liability  to  any
Multiemployer  Plan that is material in the  aggregate has been or is reasonably
expected to be incurred with respect to any Multiemployer Plan by the Company or
any Company Commonly Controlled Entity.

                  (e) The Company has furnished to Acquiror  complete copies, as
of the date hereof,  of all of the Company  Benefit Plans that have been reduced
to writing, together with all documents establishing or constituting any related
trust,  annuity contract,  insurance contract or other funding  instrument.  The
Company has furnished to Acquiror  complete copies of all existing  current plan
summaries,  employee booklets, personnel manuals and other material documents or
written materials concerning the Company Benefit Plans.

                  (f) Except as set forth on Schedule 3.13, there are no Company
Benefit  Plans which  provide for  payments  which would not be  deductible  for
Federal income tax purposes by reason of Section 280G of the Code.

         SECTION 3.14.   Properties; Assets.

                  (a) Except as set forth in  Schedule  3.14(a),  the Company or
one of the Company  Subsidiaries  (a) has good and  marketable  title to all the
properties and assets reflected in the consolidated balance sheet of the Company
dated as of June 30, 1997 (the  "Company  Balance  Sheet") as being owned by the
Company or one of the Company  Subsidiaries (except properties sold or otherwise
disposed  of since the date  thereof in the  ordinary  course of  business),  or
acquired after the date thereof which are material to the Company's  business on
a consolidated  basis,  free and clear of all Encumbrances  except (i) statutory
liens  securing   payments  not  yet  due,  and  (ii)  such   imperfections   or
irregularities  of  title,  claims,  liens,   charges,   security  interests  or
encumbrances  as do not  materially  affect the use of the  properties or assets
subject  thereto or affected  thereby or otherwise  materially  impair  business
operations at such  properties,  and (b) is the lessee of all leasehold  estates
reflected in the Company  Balance  Sheet (except for leases that have expired by
their terms since the date thereof) or acquired after the date thereof which are
material to its business on a  consolidated  basis and is in  possession  of the
properties  purported  to be leased  thereunder,  and, to the  knowledge  of the
Company,  each such lease is valid without default thereunder by the lessee. The
assets and  properties of the Company and the Company  Subsidiaries,  taken as a
whole,  are in good  operating  condition  and  repair  (ordinary  wear and tear
excepted),  and constitute  all of the assets and properties  which are required
for the businesses and operations of the Company and the Company Subsidiaries as
presently conducted.

                  (b) Each Company Ground Station other than Very Small Aperture
Terminal (VSAT) earth stations (the "VSAT Stations") now operated by the Company
or a Company Subsidiary (a "Major Station") is listed on Schedule 3.14(b),  and,
except as set forth on such  schedule,  with respect to each such Major Station,
the improvements thereto and all components used in connection therewith are (i)
in good  operating  condition  and repair and are  suitable  for their  intended
purposes and (ii)  supported by a back-up,  fuel-powered  electricity  generator
capable  of  generating  power  sufficient  to  meet  the  requirements  of  the
operations  conducted at the Major Station. The  transmission/reception  systems
and  programming and data  broadcasting  systems at each such Major Station have
the  redundancies  that are set forth on Schedule  3.14(b).



                                     - 21 -
<PAGE>



The VSAT Stations, taken as a whole, are in good operating condition and repair,
ordinary wear and tear excepted, and are suitable for their intended purposes.

                  (c) Set forth on  Schedule  3.14(c) are the  following:  (i) a
complete and accurate list, by orbital location, of each Company Satellite, (ii)
a true and correct copy of a satellite loading chart listing each transponder on
the Satellite,  along with the type of transponder  and the customer or group of
related  customers  that have  purchased  services  utilizing  capacity  on such
transponder and the amount of such capacity  allocated to such customer(s),  and
(iii) the most recent "Health Status Report," summarizing all spacecraft related
incidents and anomalies known to the Company as well as the current  status,  to
the best knowledge of the Company, of the subsystems on the Company Satellites.

                  (d)  Except  as set  forth on  Schedule  3.14(d),  to the best
knowledge  of the Company  the  equipment  to provide  tracking,  telemetry  and
control  services  related to each Satellite is (i) in good operating  condition
and repair, ordinary wear and tear excepted, and (ii) not in need of maintenance
or repairs except for ordinary, routine maintenance and repairs.

                  (e)  Except  as set  forth on  Schedule  3.14(e),  to the best
knowledge of the Company, no person or entity has asserted that it has rights to
operate a spacecraft in a manner that would result in interference  with respect
to any  satellite  now operated by the Company or any Company  Subsidiary or for
which the Company or any Company  Subsidiary has applied for a permit.  Schedule
3.14(e)  contains a list of all satellite  coordination  agreements to which the
Company or any Company  Subsidiary are a party, a summary of all  operational or
technical  limitations  set forth  therein,  and a summary  of all  coordination
discussions in which the Company or the Company Subsidiaries has been engaged in
the past three (3) years  with other  persons  or  entities  with  regard to any
Satellite now operated by the Company or any Company Subsidiary or for which the
Company or any Company Subsidiary has applied for a permit.

                  (f) Schedule 3.14(f) contains a summary,  by orbital location,
of the status of frequency  registration at the International  Telecommunication
Union, for each Satellite  operated,  or proposed to be operated during the next
three (3)  years,  by the  Company  or any  Company  Subsidiary,  including  the
identity of the sponsoring administration and frequency bands covered.

         SECTION 3.15.   Labor Relations.

                  Except as set forth in Schedule 3.15,  Neither the Company nor
any Company  Subsidiary  is a party to any  collective  bargaining  agreement or
other contract or agreement with any labor organization or other  representative
of any of the employees of the Company or any Company Subsidiary.  Except as set
forth in Schedule 3.15, the Company and each Company Subsidiary is in compliance
in all  material  respects  with  all laws  relating  to the  employment  or the
workplace,  including, without limitation,  provisions relating to wages, hours,
collective bargaining,  safety and health, work authorization,  equal employment
opportunity,  immigration  and the  withholding  of income  taxes,  unemployment
compensation,  worker's  compensation,  employee  privacy  and right to know and
social security contributions.




                                     - 22 -
<PAGE>



         SECTION 3.16.   Environmental Matters.

                  (a)  Except  as set  forth in  Schedule  3.16 and  except  for
matters which would not have a Company Material Adverse Effect,  (i) the Company
and each Company  Subsidiary is in compliance with all applicable  Environmental
Laws (as defined  below) in effect on the date hereof;  (ii) neither the Company
nor any Company  Subsidiary has received any written  communication that alleges
that the Company or any Company  Subsidiary is not in compliance in all material
respects with all  applicable  Environmental  Laws in effect on the date hereof;
(iii) all material permits and other governmental  authorizations currently held
by the Company and each Company  Subsidiary  pursuant to the Environmental  Laws
("Environmental  Permits")  are in full force and  effect,  the Company and each
Company  Subsidiary is in compliance with all of the terms of such Environmental
Permits and authorizations, and no other Environmental Permits or authorizations
are required by the Company or any Company  Subsidiary  for the conduct of their
respective  businesses on the date hereof;  and (iv) the  management,  handling,
storage, transportation, treatment, and disposal by the Company and each Company
Subsidiary of any Hazardous  Materials (as defined below) has been in compliance
with all applicable Environmental Laws.

                  (b)  Except  as set  forth in  Schedule  3.16 and  except  for
Environmental  Claims (as defined below) which would not have a Company Material
Adverse Effect,  there is no Environmental Claim pending or, to the knowledge of
the Company,  threatened  against or involving the Company or any of the Company
Subsidiaries   or  against  any  person  or  entity  whose   liability  for  any
Environmental  Claim the Company or any of the Company  Subsidiaries  has or may
have retained or assumed either contractually or by operation of law.

                  (c)  Except  as set  forth in  Schedule  3.16 and  except  for
matters which would not have a Company Material Adverse Effect, to the knowledge
of the  Company,  there are no past or  present  actions  or  activities  by the
Company or any Company  Subsidiary  involving the storage,  treatment,  release,
emission,  discharge,  disposal or  arrangement  for  disposal of any  Hazardous
Materials,  that  could  reasonably  form the basis of any  Environmental  Claim
against the Company or any  Company  Subsidiary  or against any person or entity
whose  liability  for  any  Environmental  Claim  the  Company  or  any  Company
Subsidiary may have retained or assumed either  contractually or by operation of
law.

                  (d) As used  herein,  these  terms  shall  have the  following
meanings:

                  (i)  "Environmental  Claim" means any and all  administrative,
         regulatory  or  judicial  actions,   suits,  demands,  demand  letters,
         directives,  claims, liens,  investigations,  proceedings or notices of
         noncompliance  or  violation   (written  or  oral)  by  any  person  or
         governmental  authority  alleging  potential  liability arising out of,
         based on or  resulting  from the  presence,  or release  or  threatened
         release into the  environment,  or any  exposure  to, of any  Hazardous
         Materials at any property or location owned or leased by the Company or
         any Company  Subsidiary  (for  purposes of this Section  3.16) or other
         circumstances  forming the basis of any violation or alleged  violation
         of any Environmental Law.




                                     - 23 -
<PAGE>



                  (ii)  "Environmental   Laws"  means  all  applicable  foreign,
         federal,  state and local  laws  (including  the  common  law),  rules,
         requirements  and  regulations  relating to pollution,  the environment
         (including,   without   limitation,   ambient   air,   surface   water,
         groundwater,  land surface or subsurface strata) or protection of human
         health as it relates to the environment including,  without limitation,
         laws and regulations  relating to releases of Hazardous  Materials,  or
         otherwise relating to the manufacture,  processing,  distribution, use,
         treatment,  storage,  disposal,  transport  or  handling  of  Hazardous
         Materials or relating to management of asbestos in buildings.

                  (iii)  "Hazardous  Materials"  means  wastes,  substances,  or
         materials (whether solids, liquids or gases) that are deemed hazardous,
         toxic,  pollutants,  or  contaminants  under  any  Environmental  Laws,
         including,   without  limitation,   substances  defined  as  "hazardous
         substances,"  "toxic  substances,"  "radioactive  materials,  including
         sources of ionizing and nonionizing  radiation," "petroleum products or
         wastes," or other  similar  designations  in, or  otherwise  subject to
         regulation under, any Environmental Law.

         SECTION 3.17.     Insurance.

                  Schedule  3.17  contains a list of all  insurance  policies of
title, property, fire, casualty, liability, life, workmen's compensation,  libel
and  slander,  and other forms of  insurance  in force at the date  thereof with
respect  to the  Company  and  the  Company  Subsidiaries.  All  such  insurance
policies:  (a)  insure  against  such  risks,  and are in such  amounts,  as are
appropriate and reasonable, in the judgment of the Company's Board of Directors,
considering the Company and the Company Subsidiaries' properties, businesses and
operations;  (b) are in full force and effect;  and (c) are valid,  outstanding,
and  enforceable.  Neither the Company nor any of the Company  Subsidiaries  has
received or given  notice of  cancellation  with  respect to any of the material
insurance  policies.  The Company is in  compliance  with the  provisions of the
Indentures (as defined below) regarding insurance.

         SECTION 3.18.     Board Approval; Vote Required.

                  The Board of Directors of the Company has determined  that the
transactions  contemplated  by this  Agreement are in the best  interests of the
Company and its stockholders and has resolved to recommend to such  stockholders
that they vote in favor thereof.

         SECTION 3.19.     Opinion of Financial Advisor.

                  The  Company's  Board of  Directors  has  received the written
opinion  of  Morgan  Stanley  & Co.  Incorporated  that,  as of the date of this
Agreement,  the  consideration to be received  pursuant to the Agreement is fair
from a financial  point of view to the holders of shares of Common  Stock (other
than  Acquiror and its  affiliates)  and,  assuming the  conversion of Preferred
Stock  into  Common  Stock in  accordance  with its  terms,  to the  holders  of
Preferred Stock. A copy of such opinion has been delivered to Acquiror, and such
opinion has not been withdrawn or modified in any material respect.




                                     - 24 -
<PAGE>



         SECTION 3.20.     Brokers.

                  Except  for  Morgan  Stanley & Co.  Incorporated,  no  broker,
finder or investment banker is entitled to any brokerage,  finder's or other fee
or commission in connection with the transactions contemplated by this Agreement
based upon arrangements made by or on behalf of the Company.

         SECTION 3.21. Takeover Provisions Inapplicable.

                  Assuming  Acquiror and its  "associates"  and "affiliates" (as
defined  in Section  203 of the  Delaware  Law in effect as of the date  hereof)
collectively  beneficially own and have  beneficially  owned at all times during
the three year period prior to the date hereof less than fifteen  percent  (15%)
of the Common  Stock  outstanding  (other than the Common  Stock  subject to the
Principal Stockholder Agreement),  Section 203 of the Delaware Law is, and shall
be,  inapplicable  to the  Merger  and  the  transactions  contemplated  by this
Agreement, including the Principal Stockholder Agreement.

                                   ARTICLE IV.

                  REPRESENTATIONS AND WARRANTIES OF MERGER SUB

                  Acquiror and Merger Sub jointly and  severally  represent  and
warrant to the Company as follows:

         SECTION 4.1.      Organization and Qualification.

                  Merger Sub is a corporation  duly organized,  validly existing
and in good standing  under  Delaware Law.  Merger Sub was formed solely for the
purpose of engaging in the  transactions  contemplated by this Agreement.  As of
the date of this Agreement,  except for  obligations or liabilities  incurred in
connection  with  its   incorporation   or  organization  and  the  transactions
contemplated  by  this  Agreement,  Merger  Sub has not  incurred,  directly  or
indirectly, any obligations or liabilities or engaged in any business activities
of any type or kind  whatsoever or entered into any  agreements or  arrangements
with any person.

         SECTION 4.2.      Certificate of Incorporation and Bylaws.

                  Merger Sub has  heretofore  made  available  to the  Company a
complete and correct copy of the certificate of incorporation  and the bylaws of
Merger Sub,  each as amended to date.  Such  certificate  of  incorporation  and
bylaws are in full force and effect.  Merger Sub is not in  violation  of any of
the provisions of its certificate of incorporation or bylaws.

         SECTION 4.3.      Authority.

                  Merger Sub has the necessary  corporate power and authority to
enter  into  this  Agreement,  to  perform  its  obligations  hereunder  and  to
consummate the transactions  contemplated  hereby. The execution and delivery of
this  Agreement  by  Merger  Sub  and  the  consummation  by  Merger  Sub of the
transactions  contemplated  hereby have been duly and 



                                     - 25 -
<PAGE>



validly  authorized by all  necessary  corporate  action and no other  corporate
proceedings  on the part of Merger Sub are necessary to authorize this Agreement
or to consummate the transactions  contemplated  hereby. This Agreement has been
duly executed and delivered by Merger Sub and,  assuming the due  authorization,
execution  and  delivery  of  this   Agreement  by  the  Company  and  Acquiror,
constitutes a legal, valid and binding obligation of Merger Sub,  enforceable in
accordance  with its  terms,  except as such  enforceability  may be  limited by
bankruptcy,  insolvency,  reorganization,  moratorium  and other similar laws of
general  applicability  relating to or affecting creditors' rights generally and
by the application of general principles of equity.

         SECTION 4.4.      No Conflict; Required Filings and Consents.

                  (a) The execution and delivery of this Agreement by Merger Sub
do not,  and  the  performance  by  Merger  Sub of its  obligations  under  this
Agreement   will  not,  (i)  conflict  with  or  violate  the   certificate   of
incorporation  or bylaws of Merger  Sub,  (ii)  subject to  compliance  with the
requirements  set forth in Section  4.4(b)  below,  conflict with or violate any
law, statute, ordinance, rule, regulation,  order, judgment or decree applicable
to Merger Sub or by which any of its  properties is bound or affected,  or (iii)
result in any breach of or  constitute  a default (or an event which with notice
or lapse of time or both would  become a default)  under,  or give to others any
rights of termination,  amendment, acceleration or cancellation of, or result in
the creation of any Encumbrance on any of the properties or assets of Merger Sub
pursuant to, any note, bond, mortgage,  indenture,  contract,  agreement, lease,
license, permit, franchise or other instrument or obligation to which Merger Sub
is a party or by which Merger Sub or any of its properties or assets is bound or
affected,  except,  in the case of clauses  (ii) and (iii)  above,  for any such
conflicts,  violations,  breaches,  defaults or other alterations or occurrences
that would not  prevent  or delay  consummation  of the  Merger in any  material
respect,  or otherwise  prevent Merger Sub from performing its obligations under
this Agreement in any material respect.

                  (b) The execution and delivery of this Agreement by Merger Sub
does not, and the performance of this Agreement by Merger Sub will not,  require
any  consent,   approval,   authorization  or  permit  of,  or  filing  with  or
notification  to,  any  Governmental  Entity,  except  (i)  for  (A)  applicable
requirements,  if any, of the Exchange Act,  state  takeover laws, the NASD, the
HSR Act, the  Communications  Act and the FCC, (B) applicable  requirements,  if
any, of the consents, approvals, authorizations or permits described in Schedule
4.4, and (C) filing and recordation of appropriate  merger documents as required
by  Delaware  Law and (ii) where  failure to obtain  such  consents,  approvals,
authorizations or permits,  or to make such filings or notifications,  would not
prevent or delay consummation of the Merger in any material respect.




                                     - 26 -
<PAGE>



                                   ARTICLE V.

                         REPRESENTATIONS AND WARRANTIES
                                   OF ACQUIROR

                  Acquiror represents and warrants to the Company as follows:

         SECTION 5.1.      Organization and Qualification; Subsidiaries.

                  Each  Subsidiary  of Acquiror,  Globalstar  Telecommunications
Limited, a Bermuda company, and Globalstar, L.P., a Delaware limited partnership
(each an "Acquiror Subsidiary" and collectively,  the "Acquiror  Subsidiaries,")
and Acquiror is a corporation or partnership  duly organized,  validly  existing
and in good standing under the laws of the jurisdiction of its organization. The
Acquiror and each Acquiror Subsidiary is duly qualified to conduct its business,
and is in good  standing,  in  each  jurisdiction  where  the  character  of its
properties owned,  operated or leased or the nature of its activities makes such
qualification  necessary,  except  for  such  failures  which  would  not in the
aggregate  have an Acquiror  Material  Adverse  Effect (as defined  below).  The
Acquiror and each Acquiror  Subsidiary has the requisite power and authority and
any  necessary  governmental  authority,  franchise,  license  or permit to own,
operate,  lease and otherwise to hold and operate its assets and  properties and
to carry on its business as now being conducted,  except for such failures which
would not have an Acquiror  Material  Adverse Effect.  As used herein,  the term
"Acquiror  Material  Adverse  Effect" means any material  adverse  effect on the
business,   assets  or  condition  (financial  or  otherwise),   liabilities  or
operations of Acquiror and Acquiror Subsidiaries taken as a whole.

         SECTION 5.2.    Certificate of Incorporation and Bylaws.

                  Acquiror  has  heretofore  delivered to the Company a complete
and correct copy of the memorandum of association  and the bye-laws of Acquiror,
each as amended to date. Such memorandum of association and bye-laws are in full
force and effect.  Acquiror is not in violation of any of the  provisions of its
memorandum of association or bye-laws.

         SECTION 5.3.      Capitalization.

                  As of September  30, 1997,  the  authorized  capital  stock of
Acquiror  consists of: (a) seven hundred fifty million  (750,000,000)  shares of
common stock,  par value $.01 per share of which two hundred million six hundred
thirty-three thousand one hundred sixty-one  (200,633,161) shares are issued and
outstanding;  (b) one hundred  fifty  million  (150,000,000)  shares of Series A
convertible  preferred  stock,  par  value  $.01 per share  ("Acquiror  Series A
Preferred") of which forty-five million eight hundred  ninety-six  thousand nine
hundred seventy-seven (45,896,977) shares are issued and outstanding;  (c) seven
hundred fifty thousand (750,000) shares Series B preferred stock, par value $.01
per  share,  no  shares  of  which  are  outstanding;  and  (d)  twenty  million
(20,000,000)  shares 6% Series C convertible  redeemable  preferred  stock,  par
value $.01 per share  ("Acquiror  Series C Preferred") of which fourteen million
nine  hundred  nine  thousand  four  hundred   thirty-seven   (14,909,437)   are
outstanding. As of September 30, 1997, (i) eleven million eight hundred thirteen
thousand  five hundred  (11,813,500)  shares of common



                                     - 27 -
<PAGE>



stock were reserved for issuance  under the  Acquiror's  1996 stock option plan;
(ii) four million eight  hundred  forty-three  thousand two hundred  (4,843,200)
shares of common stock were reserved for issuance under the  Acquiror's  savings
plan; (iii) two hundred thousand (200,000) shares of the Acquiror's common stock
were reserved for issuance  under the  Acquiror's  non-employee  director  stock
option plan;  and (iv) shares were reserved for issuance upon  conversion of the
Acquiror Series A Preferred and Acquiror  Series C Preferred.  Other than as set
forth  above,  there  are no  options,  warrants  or other  rights,  agreements,
arrangements or commitments of any character  relating to the issued or unissued
capital stock of Acquiror or obligating  Acquiror to issue or sell any shares of
capital stock of, or other equity interests, in Acquiror.

                  As of the date hereof, there are no bonds,  debentures,  notes
or  other  indebtedness  having  the  right  to vote  on any  matters  on  which
Acquiror's stockholders may vote issued or outstanding. Except for agreements or
other documents set forth in Schedule 5.3, there are no outstanding  contractual
obligations of Acquiror to repurchase, redeem or otherwise acquire any shares of
its capital stock. All of the issued and outstanding  shares of Acquiror capital
stock  have been duly  authorized  and  validly  issued  and are fully  paid and
nonassessable and not subject to preemptive  rights.  All of the Acquiror Shares
issuable in accordance with this Agreement in exchange for Capital Stock will be
when so issued duly authorized, validly issued, fully paid and nonassessable and
shall be delivered free and clear of all liens, claims, charges and encumbrances
of any kind or nature  whatsoever.  Except as set forth in  Schedule  5.3,  with
respect  to  each  Acquiror  Subsidiary  that  is  a  corporation,  all  of  the
outstanding  shares of capital stock of such Acquiror  Subsidiary have been duly
authorized and validly issued and are fully paid and nonassessable. With respect
to each  Acquiror  Subsidiary  that  is a  partnership,  all of the  partnership
interests owned by Acquiror,  and with respect to each Acquiror  Subsidiary that
is a  corporation,  all of the  outstanding  shares of  capital  stock  owned by
Acquiror,  are owned by Acquiror free and clear of any  Encumbrances,  except as
set forth in Schedule 5.3.

         SECTION 5.4.      Authority.

                  Acquiror has the  necessary  corporate  power and authority to
enter  into  this  Agreement,  to  perform  its  obligations  hereunder  and  to
consummate the transactions  contemplated  hereby. The execution and delivery of
this Agreement by Acquiror and the  consummation by Acquiror of the transactions
contemplated  hereby  have been duly and  validly  authorized  by all  necessary
corporate action and no other  proceedings on the part of Acquiror are necessary
to authorize  this  Agreement or to  consummate  the  transactions  contemplated
hereby.  This  Agreement  has been duly  executed and delivered by Acquiror and,
assuming  the  due  authorization,   execution  and  delivery  by  the  Company,
constitutes a legal,  valid and binding  obligation of Acquiror,  enforceable in
accordance  with its  terms,  except as such  enforceability  may be  limited by
bankruptcy,  insolvency,  reorganization,  moratorium  and other similar laws of
general  applicability  relating to or affecting creditors' rights generally and
by the application of general  principles of equity. No vote of the stockholders
of Acquiror is necessary to approve  this  Agreement or any of the  transactions
contemplated hereby.




                                     - 28 -
<PAGE>



         SECTION 5.5.      No Conflict; Required Filings and Consents.

                  (a) The execution  and delivery of this  Agreement by Acquiror
do not, and the performance by Acquiror of its obligations  under this Agreement
will not, (i) conflict with or violate the memorandum of association or bye-laws
of Acquiror,  (ii) subject to obtaining the approvals  and  compliance  with the
requirements  set forth in Section  5.5(b)  below,  conflict with or violate any
law, statute, ordinance, rule, regulation,  order, judgment or decree applicable
to Acquiror or any  Acquiror  Subsidiary  or by which any of its  properties  is
bound or affected,  or (iii) result in any breach of or constitute a default (or
an event  which with or without  notice or lapse of time or both would  become a
default)  under,  or  give to  others  any  rights  of  termination,  amendment,
acceleration or cancellation  of, or result in the creation of an Encumbrance on
any of the  properties  or assets  of  Acquiror  pursuant  to,  any note,  bond,
mortgage,  indenture,  contract, agreement, lease, license, permit, franchise or
other instrument or obligation to which Acquiror or any Acquiror Subsidiary is a
party  or by which  Acquiror  or any of its  properties  or  assets  is bound or
affected,  except,  in the case of clauses  (ii) and (iii)  above,  for any such
conflicts,  violations,  breaches,  defaults or other alterations or occurrences
that would not  prevent  or delay  consummation  of the  Merger in any  material
respect,  or otherwise  prevent  Acquiror from performing its obligations  under
this Agreement in any material respect,  and would not have an Acquiror Material
Adverse Effect.

                  (b) The execution  and delivery of this  Agreement by Acquiror
does not, and the  performance of this  Agreement by Acquiror will not,  require
any  consent,   approval,   authorization  or  permit  of,  or  filing  with  or
notification  to,  any  Governmental  Entity,  except  (i)  for  (A)  applicable
requirements,  if any, of the Securities Act, Blue Sky Laws, Exchange Act, state
takeover laws, the NYSE, the NASD, the HSR Act, the  Communications  Act and the
FCC,  (B)  applicable  requirements,   if  any,  of  the  consents,   approvals,
authorizations  or  permits  described  in  Schedule  5.5,  and (C)  filing  and
recordation of appropriate merger documents as required by Delaware Law and (ii)
where failure to obtain such consents, approvals,  authorizations or permits, or
to make such filings or notifications,  would not prevent or delay  consummation
of the Merger in any  material  respect,  or  otherwise  prevent  Acquiror  from
performing its  obligations  under this Agreement in any material  respect,  and
would not have an Acquiror Material Adverse Effect.

         SECTION 5.6.      SEC Filings; Financial Statements.

                  (a) Acquiror and each Acquiror Subsidiary required to file has
filed all forms,  reports,  statements and other documents  required to be filed
with the SEC since January 1, 1996, and has heretofore delivered to the Company,
in the form filed with the SEC since such  date,  together  with any  amendments
thereto, its (i) Annual Reports on Form 10-K, (ii) all Quarterly Reports on Form
10-Q, (iii) all proxy statements  relating to meetings of stockholders  (whether
annual or  special),  (iv) all reports on Form 8-K and (v) all other  reports or
registration  statements  filed  by  Acquiror  and  such  Acquiror  Subsidiaries
(collectively, the "Acquiror SEC Reports"). As of their respective filing dates,
the Acquiror SEC Reports (i) complied as to form in all material  respects  with
the  requirements of the Exchange Act and the Securities Act and (ii) did not at
the time they were filed contain any untrue statement of a material fact or omit
to state a material fact 



                                     - 29 -
<PAGE>



required to be stated  therein or necessary to make the statements  therein,  in
the light of the circumstances under which they were made, not misleading.

                  (b)  The  audited   consolidated   financial   statements  and
unaudited interim financial  statements of Acquiror included in the Acquiror SEC
Reports comply as to form in all material  respects with  applicable  accounting
requirements  and with  the  published  rules  and  regulations  of the SEC with
respect  thereto.  The  financial  statements,  including  all related notes and
schedules,  contained in the Acquiror SEC Reports (or  incorporated by reference
therein)  present  fairly in all material  respects the  consolidated  financial
position of Acquiror and the Acquiror  Subsidiaries  as at the respective  dates
thereof and the  consolidated  results of operations  and cash flows of Acquiror
and the Acquiror  Subsidiaries  for the periods  indicated,  in accordance  with
generally  accepted   accounting   principles  applied  on  a  consistent  basis
throughout the periods  involved (except as may be noted therein) and subject in
the case of interim financial statements to normal year-end adjustments.

         SECTION 5.7.      Absence of Certain Changes or Events.

                  Except as set forth in  Schedule  5.7,  since  June 30,  1997,
Acquiror and the Acquiror Subsidiaries have not incurred any material liability,
except in the ordinary  course of their  businesses  consistent  with their past
practices,  and Acquiror  and the Acquiror  Subsidiaries  have  conducted  their
respective  businesses  in  the  ordinary  course  consistent  with  their  past
practices.  Except set forth in Schedule 5.7, since June 30, 1997, there has not
been any change in the business,  condition  (financial or otherwise) or results
of  operations  of  Acquiror  and  the  Acquiror  Subsidiaries,   including  any
transaction,  commitment,  dispute, damage,  destruction or loss, whether or not
covered by  insurance,  or other event of any  character  (whether or not in the
ordinary course of business)  individually or in the aggregate which has had, or
is reasonably likely to have, an Acquiror Material Adverse Effect.

         SECTION 5.8.      Absence of Litigation.

                  Except as set forth in Schedule  5.8,  as of the date  hereof,
there are (a) no claims, actions, suits, investigations,  or proceedings pending
or,  to  Acquiror's  knowledge,  threatened  against  Acquiror  or any  Acquiror
Subsidiary before any court, administrative,  governmental,  arbitral, mediation
or regulatory  authority or body, domestic or foreign,  that would be reasonably
likely to have an Acquiror Material Adverse Effect, or that challenge or seek to
prevent, enjoin, alter or materially delay the transactions contemplated hereby,
and (b) no judgments,  decrees, injunctions or orders of any Governmental Entity
or arbitrator outstanding against Acquiror or any Acquiror Subsidiary that would
reasonably be likely to have an Acquiror Material Adverse Effect.

         SECTION 5.9.      Licenses and Permits; Compliance with Laws.

                  Except  as set  forth  in  Schedule  5.9 or  disclosed  in the
Acquiror SEC Reports:

                  (a)  Acquiror  and  Acquiror  Subsidiaries  hold all  permits,
licenses and approvals  (none of which has been modified or rescinded and all of
which  are  in  full  force  and   



                                     - 30 -
<PAGE>



effect) from all Governmental  Entities  (collectively,  the "Acquiror Permits")
necessary for Acquiror and Acquiror Subsidiaries to own, lease and operate their
respective  properties and to carry on their respective  businesses,  including,
without limitation, the construction,  launch and operation of, and transmitting
to and from,  each of the  satellites  and  transponders  owned by Acquiror (the
"Acquiror Satellites") and ground stations,  including,  without limitation, the
related  broadcasting  facility assets consisting of land,  building,  fixtures,
improvements  and  telemetry,  tracking and control  equipment  that is owned or
leased by Acquiror or an Acquiror  Subsidiary (each an "Acquiror Ground Station"
and  collectively   the  "Acquiror  Ground   Stations")  and  the  provision  of
broadcasting or communications  services,  except for Acquiror Permits for which
the failure to obtain would not have a Acquiror Material Adverse Effect. Each of
Acquiror and Acquiror  Subsidiaries  has  fulfilled and complied in all material
respects with its  obligations  under each of Acquiror  Permits  owned,  held or
possessed by it, and no event has occurred or condition or state of facts exists
which  constitutes or, after notice or lapse of time or both, would constitute a
breach or default  under any Acquiror  Permit and which permits or, after notice
or lapse of time or both,  would permit  revocation or  termination  of any such
Acquiror Permit,  and neither Acquiror nor any Acquiror  Subsidiary has received
or has  knowledge  of any written  notice of  cancellation  or default or of any
dispute concerning any Acquiror Permit, or of any such event, condition or state
of facts that would constitute a default the effect of which would be revocation
or  termination  of such Acquiror  Permit,  in each case where these would be an
Acquiror  Material Adverse Effect.  If any of the Acquiror Permits that has been
issued  prior  to  the  date  hereof  is the  subject  of  any  pending  renewal
application,  Acquiror is not aware of any reason why the Acquiror  Permits will
not be renewed in the ordinary  course or why any of Acquiror  Permits  might be
revoked,  except in each case where any such non-renewal or revocation would not
individually or in the aggregate be an Acquiror Material Adverse Effect.  Except
for  rulemaking  proceedings  affecting  the satellite  industry in general,  no
judgment,  decree,  order or notice of violation  has been issued by the FCC (or
other   Governmental   Entity)   which  permits  or   contemplates   revocation,
modification or termination or any of Acquiror  Permits or which would result in
any material impairment of any rights thereunder, except where there would be no
Acquiror  Material  Adverse Effect.  The businesses of Acquiror and the Acquiror
Subsidiaries  are not  being  conducted  in  violation  of any  applicable  law,
statute,  ordinance,  regulation,  judgment,  Acquiror  Permit,  order,  decree,
concession,  grant or other authorization of any Governmental Entity, except for
violations  that would not be  reasonably  likely to have an  Acquiror  Material
Adverse Effect.

                  (b)  Acquiror  is not aware of any  material  difficulties  in
obtaining any IGO  Determinations  with respect to the Acquiror  Satellites that
are needed to operate the business of Acquiror and Acquiror Subsidiaries,  taken
as a whole,  as it is now  conducted,  or for  which  Acquiror  or any  Acquiror
Subsidiary has applied for an Acquiror  Permit,  except for those that would not
have an Acquiror Material Adverse Effect.

         SECTION 5.10.     Taxes.

                  Except  as set  forth  in  Schedule  5.10,  Acquiror  and  the
Acquiror  Subsidiaries  have  prepared  and  filed  on a timely  basis  with all
appropriate  Governmental  Entities all material returns,  reports,  information
statements and other documentation in respect of Taxes that they are required to
file  on or  prior  to the  Closing  Date  or by  the  date  therefor  including
extensions,  and 



                                     - 31 -
<PAGE>



all such returns,  reports,  information  statements and other documentation are
correct and complete in all material  respects.  Except as set forth in Schedule
5.10, Acquiror and the Acquiror  Subsidiaries have paid in full all Taxes (other
than  Taxes,  the  failure  to  pay  which  would  not,  individually  or in the
aggregate, have a Acquiror Material Adverse Effect) due on or before the Closing
Date and, in the case of material  Taxes  accruing on or before the Closing Date
that are not due on or before  the  Closing  Date,  Acquiror  has made  adequate
provision in its books and records and  financial  statements  for such payment.
Except as set forth in Schedule  5.10,  Acquiror and the  Acquiror  Subsidiaries
have withheld from  payments made to its present or former  employees,  officers
and  directors  all amounts  required by law to be  withheld,  except  where the
liability would not, individually or in the aggregate,  have a Acquiror Material
Adverse  Effect,  and has,  where  required,  remitted  such amounts  within the
applicable periods to the appropriate Governmental Entities. In addition, except
as set forth in  Schedule  5.10 and  except  for such  matters  which  would not
individually or in the aggregate have an Acquiror  Material Adverse Effect,  (a)
there are no  assessments  of,  or  claims  against,  Acquiror  or the  Acquiror
Subsidiaries  with respect to Taxes,  that are outstanding;  (b) no Governmental
Entity  is  conducting  an  examination  or audit of  Acquiror  or any  Acquiror
Subsidiary  in respect  of taxes;  and (c)  neither  Acquiror  nor any  Acquiror
Subsidiary  has  executed  or  filed  any  agreement  extending  the  period  of
assessment or collection of any taxes which remain in effect.

         SECTION 5.11.     Intellectual Property.

                  Unless   expressly  set  forth  otherwise  on  Schedule  5.11,
Acquiror and Acquiror Subsidiaries own or have a right to use, free and clear of
any liens,  security  interests,  encumbrances or claims of others, all patents,
trademarks,  service marks, logos,  slogans,  designs,  copyrights,  tradenames,
design  registrations,  and other  intellectual  property and any trade secrets,
know-how,  confidential  information,  material computer programs (including any
source code),  documentation,  engineering  and technical  drawings,  processes,
methodologies,  trade dress, mask works and technology, in each case material to
the conduct of the  business of Acquiror and  Acquiror  Subsidiaries  taken as a
whole (all of the  foregoing  items  collectively  referred to as the  "Acquiror
Intellectual  Property").  Except as set forth on  Schedule  5.11 or where there
would be no Acquiror Material Adverse Effect, (a) no proceedings are pending or,
to Acquiror's knowledge,  threatened in writing, which challenge the validity of
the  ownership  by  Acquiror  and/or any  Acquiror  Subsidiary  of any  material
Acquiror   Intellectual   Property;   (b)  Acquiror  has  no  knowledge  of  any
infringement or infringing use of any material Acquiror Intellectual Property or
licenses by any person or entity; (c) to Acquiror's  knowledge,  no infringement
of any material  intellectual  property right or other  proprietary right of any
third  party  has  occurred  or will  result  in any way  from the  signing  and
execution  of  this  Agreement  or  the  consummation  of  any  or  all  of  the
transactions  contemplated  hereby,  and no  written  claim has been made by any
third party based upon an allegation of any such infringement;  and (d) material
Acquiror  Intellectual  Property  is valid and in full  force and  effect and no
aspect thereof is subject to any outstanding order, ruling, decree,  judgment or
stipulation by or with any court, arbitrator or administrative agency.




                                     - 32 -
<PAGE>



         SECTION 5.12.     Material Contracts.

                  Except as set forth in Schedule 5.12, all agreements  filed as
exhibits  to  Acquiror  SEC  Reports  and each  agreement  that  would have been
required to be filed as an exhibit to Acquiror SEC Reports if such agreement had
been  entered  into  prior to the date of filing  any such  Acquiror  SEC Report
(collectively,  the "Acquiror  Material  Contracts") are valid and in full force
and effect on the date hereof except to the extent they have previously  expired
in accordance with their terms, and neither Acquiror nor any Acquiror Subsidiary
has (or has any knowledge that any party thereto has) violated any provision of,
or committed or failed to perform any act which with or without notice, lapse of
time or both would  constitute a default under the  provisions  of, any Acquiror
Material Contract, except for defaults which would not reasonably be expected to
have an Acquiror Material Adverse Effect.

         SECTION 5.13.     Employee Benefit Plans.

                  (a) Each of the Benefit Plans  currently  adopted,  maintained
by,  sponsored  in whole or in part by, or  contributed  to by  Acquiror  or any
entity  required  to be  aggregated  with  Acquiror  which  is a  member  of the
controlled group of corporations  which includes  Acquiror within the meaning of
Section  414(b)  or (c) of the Code  (each,  an  "Acquiror  Commonly  Controlled
Entity")  for the  benefit  of present  and former  employees  or  directors  of
Acquiror and of each Acquiror  Subsidiary or their  beneficiaries,  or providing
benefits  to such  persons in respect of  services  provided  to any such entity
(collectively,  the "Acquiror Benefit Plans") intended to be "qualified"  within
the meaning of Section  401(a) of the Code has been  determined  by the Internal
Revenue   Service  to  be  so  qualified  and,  to  Acquiror's   knowledge,   no
circumstances  exist that could  reasonably be expected by Acquiror to result in
the revocation of any such determination.  Each of the Acquiror Benefit Plans is
in  compliance  with the  applicable  terms of ERISA  and the Code and any other
applicable  laws,  rules and  regulations the breach or violation of which could
result in a material  liability to Acquiror or any Acquiror Commonly  Controlled
Entity.

                  (b) No Acquiror  Benefit  Plan which is an  "employee  pension
benefit  plan," as that term is defined in Section  3(2) of ERISA (an  "Acquiror
ERISA Plan") which is a defined benefit pension plan that is subject to Title IV
of ERISA  has any  "unfunded  current  liability,"  as that term is  defined  in
Section 302(d)(8)(A) of ERISA.

                  (c) No Acquiror Benefit Plan is a Multiemployer  Plan. Neither
Acquiror nor any Acquiror Commonly Controlled Entity has completely or partially
withdrawn from any Multiemployer  Plan. No termination  liability to the Pension
Benefit Guaranty  Corporation or withdrawal  liability to any Multiemployer Plan
that is  material  in the  aggregate  has been or is  reasonably  expected to be
incurred  with  respect to any  Multiemployer  Plan by Acquiror or any  Acquiror
Commonly Controlled Entity.

         SECTION 5.14.     Qualification of Acquiror.

                  Acquiror is and pending  the  Effective  Time will be legally,
technically,  financially and otherwise  qualified under the  Communications Act
and all rules,  regulations and policies of 



                                     - 33 -
<PAGE>



the FCC to  acquire,  own and operate the  material  assets and  business of the
Company and the Company Subsidiaries. Acquiror knows of the existence of no fact
that,  under any  Acquiror  Permits  and  present law  relating  thereto,  would
disqualify  Acquiror from  consummating the Merger within the time  contemplated
herein.  There are no facts or proceedings which would reasonably be expected to
disqualify  Acquiror under the Communications Act or otherwise from acquiring or
operating  any of the  assets  and  business  of the  Company  and  the  Company
Subsidiaries  or would  cause the FCC not to  approve  the FCC  Application  (as
defined  in  Section  7.4(a)).   Acquiror  has  no  knowledge  of  any  fact  or
circumstance relating to Acquiror or any of its affiliates that would reasonably
be expected to (a) except as set forth on Schedule 5.14, cause the filing of any
objection  to the FCC  Application,  or (b)  lead  to a  material  delay  in the
processing  by the FCC of the FCC  Application.  No  waiver  of any FCC  rule or
policy is necessary to be obtained for the approval of the FCC Application,  nor
will processing  pursuant to any exception or rule of general  applicability  be
requested or required in connection with the  consummation  of the  transactions
herein.

         SECTION 5.15.     Brokers.

                  No broker,  finder or  investment  banker is  entitled  to any
brokerage,   finder's  or  other  fee  or  commission  in  connection  with  the
transactions  contemplated by this Agreement based upon  arrangements made by or
on behalf of Acquiror.

                                   ARTICLE VI.

                                    COVENANTS

         SECTION 6.1.      Affirmative Covenants of the Company.

                  The Company  hereby  covenants  and agrees that,  prior to the
Closing Date,  unless  otherwise  expressly  contemplated  by this  Agreement or
consented to in writing by  Acquiror,  the Company  shall,  and shall cause each
Company Subsidiary to, (a) operate its business in the usual and ordinary course
consistent with past practices;  (b) use its commercially  reasonable efforts to
preserve substantially intact its business organization, maintain its rights and
franchises,  retain the services of its  respective  principal  officers and key
employees and maintain its relationship with its respective  principal customers
and suppliers;  (c) use its commercially reasonable efforts to maintain and keep
its  properties  and  assets in as good  repair  and  condition  as at  present,
ordinary wear and tear excepted; (d) use its commercially  reasonable efforts to
keep in full  force and  effect  insurance  comparable  in  amount  and scope of
coverage  to that  currently  maintained;  (e)  prepare and file all tax returns
required to be filed in a timely manner,  and in a manner  consistent with prior
years and applicable laws and  regulations;  (f) timely file with the Commission
all  reports  required  to be  filed  under  the  Exchange  Act,  which  reports
(including the unaudited interim financial  statements included in such reports)
shall  comply  with the  Exchange  Act,  the rules and  regulations  promulgated
thereunder and all applicable accounting requirements;  (g) operate its business
in accordance with the terms of its licenses, the Communications Act and the FCC
rules and policies and in all material  respects with all other applicable laws;
(h) use its commercially  reasonable efforts to maintain each Key Company Permit
in effect until the applicable  construction  projects are complete except where
(x) the loss 



                                     - 34 -
<PAGE>



of such Key Company Permit or pending Key Application would not, individually or
in the aggregate,  have a Company Material Adverse Effect or (y) the maintenance
of any such  Company  Permit  would  require an  expenditure  which  would be in
violation Section 6.2(e); (i) use its commercially reasonable efforts to enforce
its rights to have the  transmissions  to and from the  Company  Satellites  and
Major  Stations  be free  from  interference  from  other  radio  communications
facilities  (existing  or  proposed),  to the extent that such  interference  is
prohibited  by FCC  Rules or  inconsistent  with  rights  accorded  the  Company
Satellites under the International  Telecommunication  Union's radio regulations
and shall promptly notify Acquiror of any actual or threatened interference; and
(j) proceed in the  ordinary  course of business  with all pending  applications
submitted by the Company or any Company Subsidiary with any Governmental  Entity
and use its commercially reasonable efforts to ensure that such applications are
granted; provided,  however, that in the event the Company or any of the Company
Subsidiaries  deems it necessary to take certain actions that would otherwise be
prohibited  by clauses  (a)-(j) of this Section 6.1, the Company  shall  consult
with the President and Chief  Operating  Officer of Acquiror and Acquiror  shall
consider  in good  faith  the  Company's  request  to take such  action  and not
unreasonably withhold or delay its consent for such action.

         SECTION 6.2.      Negative Covenants of the Company.

                  Except as expressly  contemplated by this Agreement and except
as set forth in Schedule  6.2, or otherwise  consented to in writing by Acquiror
(which  approval shall not be unreasonably  delayed or withheld),  from the date
hereof  until the  Closing  Date,  the Company  shall not,  and shall cause each
Company Subsidiary not to, do any of the following:

                  (a) (i) increase the  periodic  compensation  payable to or to
become  payable  to any of its  directors  or  executive  officers,  except  for
increases  in  salary,  wages or  bonuses  payable  or to become  payable in the
ordinary  course of business and consistent  with past practice;  (ii) grant any
severance  or  termination  pay  (other  than  pursuant  to  existing  severance
arrangements  or  policies  as in effect on the date of this  Agreement)  to, or
enter into or modify any  employment  or severance  agreement  with,  any of its
directors,  officers or employees;  or (iii) adopt or amend any employee benefit
plan or arrangement, except as may be required by applicable law;

                  (b)  declare  or pay  any  dividend  on,  or  make  any  other
distribution in respect of, outstanding  shares of its capital stock,  except as
required under the  Certificates  of  Designations  with respect to the Series C
Preferred Stock, as presently in effect;

                  (c) (i) redeem,  repurchase or otherwise  reacquire any shares
of its  capital  stock or any  securities  or  obligations  convertible  into or
exchangeable  for any share of its capital  stock,  or any options,  warrants or
conversion  or other  rights to acquire any shares of its  capital  stock or any
such securities or obligations  (except  pursuant to agreements and documents as
set forth in Schedule 3.3 or Schedule  3.12,  and except in connection  with the
exercise of outstanding  Options  referred to in Schedule 3.3 in accordance with
their  terms);  (ii) effect any  reorganization  or  recapitalization;  or (iii)
split,  combine or reclassify  any of its capital stock or issue or authorize or
propose the  issuance of any other  securities  in respect of, in lieu of, or in
substitution for, shares of its capital stock;




                                     - 35 -
<PAGE>



                  (d) (i)  issue,  pledge,  deliver,  award,  grant or sell,  or
authorize  or propose  the  issuance,  pledge,  delivery,  award,  grant or sale
(including  the grant of any  Encumbrances)  of,  any shares of any class of its
capital stock (including  shares held in treasury),  any securities  convertible
into or exercisable or exchangeable for any such shares, or any rights, warrants
or options to acquire,  any such shares (except  pursuant to agreements or other
documents set forth on Schedule  3.12,  except  pursuant to the  agreements  and
documents  (other than the Company Stock Option Plans) set forth in Schedule 3.3
and except for the issuance of shares upon the exercise of outstanding  Options,
the  issuance of options to employees  with the written  consent of Acquiror and
the issuance of shares  under the Company  Stock  Purchase  Plan as presently in
effect,  but only to the extent such  issuances  are in the  ordinary  course of
business and consistent with past practice);  or (ii) amend or otherwise  modify
the terms of any such rights, warrants or options;

                  (e) acquire or agree to acquire,  by merging or  consolidating
with, by  purchasing an equity  interest in or a portion of the assets of, or by
any other manner, (i) any business or any corporation,  partnership, association
or  other  business   organization   or  division  (other  than  a  wholly-owned
Subsidiary) thereof or any satellite or other spacecraft the Company has not, on
the date hereof,  previously agreed in writing to acquire,  or otherwise acquire
or agree to  acquire  any  assets of any other  person or (ii) make or commit to
make any investments or capital expenditures,  other than investments or capital
expenditures:  (A)  contemplated  by the 1997 written  business plan  previously
furnished  to Acquiror or by the 1998 written  business  plan to be furnished to
Acquiror  (and the  investments  or capital  expenditures  of such plan shall be
subject to  Acquiror's  approval,  which shall not be  unreasonably  withheld or
conditioned) (B) to replace any Company  Satellite lost in a launch or in orbit;
(C) to continue capital programs now underway as described on Schedule 6.2, plus
additional  expenses  solely  for  change  orders  of up to 10% of the  progress
payments  on each  satellite  remaining  to be paid as of the date  hereof;  (D)
purchase  such  terrestrial  equipment as  necessary to supply  customers in the
ordinary course;  or (E) other  investments or capital  expenditures that do not
exceed $500,000 in the aggregate for all such  investments or expenditures  that
occur from the date hereof.

                  (f) sell,  lease,  exchange,  mortgage,  pledge,  transfer  or
otherwise  dispose  of, or agree to sell,  lease,  exchange,  mortgage,  pledge,
transfer or otherwise  encumber or dispose of, any of its material assets except
for  dispositions  in the ordinary  course of business and consistent  with past
practice  which do not exceed five hundred  thousand  dollars  ($500,000) in the
aggregate;

                  (g)  propose or adopt any  amendments  to its  certificate  of
incorporation or its bylaws;

                  (h) (i) make any  significant  change in any of its methods of
accounting  (other  than in the  ordinary  course),  or (ii) make or rescind any
express or deemed  election  relating to taxes,  settle or compromise any claim,
action,  suit,  litigation,  proceeding,  arbitration,  investigation,  audit or
controversy  relating to taxes (except where the amount of such  settlements  or
controversies,  individually  or in the aggregate,  does not exceed five hundred
thousand dollars ($500,000), or change any of its methods of reporting income or
deductions   for  federal  income  tax  purposes  from  those  employed  in  the
preparation  of the  federal  income  tax  returns  for the  



                                     - 36 -
<PAGE>



taxable  year ended  December  31,  1996,  except,  in the case of clause (i) or
clause  (ii),  as  may be  required  by law  or  generally  accepted  accounting
principles;

                  (i) incur any  obligation for borrowed  money,  whether or not
evidenced by a note, bond, debenture or similar instrument,  other than purchase
money indebtedness not to exceed five hundred thousand dollars ($500,000) in the
aggregate,  except  in the  ordinary  course of  business  under  existing  loan
agreements or  capitalized  leases,  or prepay,  before the  scheduled  maturity
thereof, any of its long-term debt;

                  (j)  engage  in  any  transaction  with,  or  enter  into  any
agreement,  arrangement,  or understanding with, directly or indirectly,  any of
such  entity's  affiliates  (as defined in Rule 12(b)-2  under the Exchange Act)
which involves the transfer of  consideration  or has a financial impact on such
entity, other than pursuant to such agreements,  arrangements, or understandings
(i)  existing on the date of this  Agreement or (ii) which are on terms that the
Board of  Directors of the Company  determines  in good faith to be equal to, or
more favorable to the Company,  than the terms that the Company would be able to
obtain from third  parties in similar  transactions  and/or for similar goods or
services;

                  (k)  surrender,  agree to allow to  expire  or be  terminated,
modify  adversely,  forfeit,  or fail to use reasonable best efforts to renew or
extend under regular  terms any of the Key Company  Permits or violate or breach
any Key Company  Permits in a manner that would give valid grounds to the FCC or
any  Governmental  Entity  to  institute  any  proceeding  for  the  revocation,
suspension,  or adverse modification of any Key Company Permit issued by the FCC
or any Governmental  Entity except for Key Company Permits which lapse or expire
due to ordinary course changes in the business of the Company. Should the FCC or
other  Governmental  Entity with jurisdiction  institute any proceedings for the
suspension,  revocation  or  adverse  modification  of any of such  Key  Company
Permits,  the Company shall use reasonable best efforts to promptly contest such
proceedings and to seek to have such proceedings  terminated in a manner that is
favorable to the Company;

                  (l) fail to use reasonable  best efforts to avoid having,  any
pending Key Application to be dismissed or denied,  except where (i) the loss of
such Key Company Permit or pending Key Application would not, individually or in
the aggregate, have a Company Material Adverse Effect or (ii) the maintenance of
any such Key  Company  Permit  would  require an  expenditure  which would be in
violation of subsection (e) above;

                  (m)   enter   into  any   contract,   agreement,   commitment,
arrangement,  lease  (including  with respect to personal  property),  policy or
other instrument that (i) does not expire by the later of one (1) year after the
date hereof or six (6) months  after the Closing  Date or (ii) is not subject to
termination by the Company upon less than six months written notice to the other
party thereto, which in either case materially restricts or limits the Company's
or any Company Subsidiary's right to conduct its business or compete, including,
without  limitation,  any restriction on its ability to sell, lease or otherwise
provide services from available transponder capacity to any person or entity for
any purpose at any orbital  location and in any frequency band, any geographical
market segment,  product line or other industry limitation,  or any exclusive or
sole supply or vendor  arrangement or agreement.  Nothing in this Section 6.2(m)
shall  preclude 



                                     - 37 -
<PAGE>



or require the Company or any Company  Subsidiary  from entering into agreements
containing most favored nation  provisions,  options for additional  services or
capacity,  rights of  negotiation,  or similar  provisions,  in each case in the
ordinary course of business; or

                  (n) agree in writing or otherwise to do any of the foregoing.

                                  ARTICLE VII.

                              ADDITIONAL AGREEMENTS

         SECTION 7.1.      Access and Information.

                  During the period from the date hereof to the  Effective  Time
(the  "Interim  Period"),  the Company and Acquiror  shall,  and shall cause the
Company Subsidiaries and the Acquiror Subsidiaries,  respectively, to, afford to
each other and their respective officers, employees,  accountants,  consultants,
legal counsel and other representatives reasonable access during normal business
hours  (and at such  other  times as the  parties  may  mutually  agree)  to the
properties,  executive  personnel and all  information  concerning the business,
properties,  contracts,  records  and  personnel  of the Company and the Company
Subsidiaries or Acquiror and the Acquiror  Subsidiaries,  as the case may be, as
such other party may reasonably request.

         SECTION 7.2.      Confidentiality.

                  Acquiror and the Company each  acknowledge  and agree that all
information  received  by it (the  "Receiving  Party")  from or on behalf of the
other  party  in  connection  with  the  transactions  contemplated  under  this
Agreement  shall  be  deemed   received,   if  by  Acquiror,   pursuant  to  the
confidentiality  agreement,  dated as of June 5, 1997,  between  the Company and
Acquiror,  and if by the  Company,  pursuant to the  confidentiality  agreement,
dated as of  September  12,  1997,  between the Company and  Acquiror  (each,  a
"Confidentiality Agreement" and together, the "Confidentiality  Agreements") and
such Receiving Party shall, and shall cause its officers, directors,  employees,
affiliates,  financial advisors and agents to, comply with the provisions of the
applicable  Confidentiality Agreement with respect to such information,  and the
provisions of the  Confidentiality  Agreements are hereby incorporated herein by
reference with the same effect as if fully set forth herein.

         SECTION 7.3.    Proxy Registration Statement; Board Recommendation and
Stockholder Vote.

                  (a) Proxy Registration  Statement.  As promptly as practicable
after the  execution  and delivery of this  Agreement,  Acquiror and the Company
shall  cooperate and prepare and Acquiror shall file with the SEC a merger proxy
registration  statement on Form S-4  (together  with the  amendments  thereof or
supplements thereto, the "Proxy Registration  Statement") in connection with the
registration  under  the  Securities  Act of the  Acquiror  Shares  to be issued
pursuant to this  Agreement and the approval by  stockholders  of the Company of
the Merger.  As promptly as practicable after the execution and delivery of this
Agreement,  the Company shall  prepare for  inclusion in the Proxy  Registration
Statement the  information  relating 



                                     - 38 -
<PAGE>



to the merger and approval of the merger by  stockholders of the Company and any
other  information  relating to the Company  which would be included in a merger
proxy statement of the Company  relating thereto under the rules and regulations
of the  SEC.  Such  information  furnished  by the  Company  shall  include  the
recommendation  of the  Company's  Board of  Directors  in favor of approval and
adoption of this  Agreement  and the Merger  (subject to Section  7.10  hereof).
Acquiror and the Company  will  cooperate  in the  production  and filing of the
Proxy  Registration  Statement,  use all reasonable efforts to have or cause the
Proxy Registration Statement to become effective as promptly as practicable, and
take any  action  required  to be taken  under any  applicable  federal or state
securities  laws in connection  with the issuance of Acquiror Shares pursuant to
this Agreement and approval of this Agreement and the Merger by  stockholders of
the Company.  None of the information supplied by any party hereto for inclusion
in the Proxy  Registration  Statement  will at the time the  Proxy  Registration
Statement is filed with the SEC and at the time it becomes  effective  under the
Securities Act, contain any untrue statement of a material fact or omit to state
any material  fact  required to be stated  therein or necessary in order to make
the statement therein,  in light of the circumstances under which they are made,
not misleading.

                  (b) Board Recommendation;  Stockholder  Approval.  The Company
shall,  promptly after the date of this Agreement,  take all action necessary in
accordance with Delaware Law and its certificate of incorporation  and bylaws to
convene a meeting of the Company's  stockholders  (together with any adjournment
or postponement thereof, the "Stockholders' Meeting"), to approve and adopt this
Agreement and the Merger. As promptly as practicable after  effectiveness of the
Proxy  Registration  Statement,  the  Company  shall  mail the  proxy  statement
included in the Proxy Registration Statement to its stockholders.  The Company's
Board of Directors shall  recommend  approval of the  transactions  contemplated
hereby and shall take all lawful  action to  solicit  from  stockholders  of the
Company proxies in favor of the approval and adoption of this Agreement and this
Merger  (subject to Section 7.10 hereof).  Notwithstanding  the  foregoing,  the
Company  shall not be obligated to mail such proxy  statement  (or, if the proxy
statement has been mailed,  hold the Stockholders  Meeting) until the earlier of
(i) the receipt of the Requisite  Consents under Section 7.14 or (ii) the making
by Acquiror of the election under Section  7.14(b) as to whether to (A) waive as
a condition of Closing (Section  8.2(f)) that the Requisite  Consents shall have
been obtained, or (B) except as otherwise provided in Section 7.15(g),  commence
an Exchange Offer.

         SECTION 7.4.      FCC Application.

                  (a)  As  promptly  as  practicable  after  the  execution  and
delivery of this Agreement,  Acquiror,  Merger Sub and the Company shall prepare
all appropriate applications for FCC consent, and such other documents as may be
required,  with  respect to the  transfer  of control of the Company to Acquiror
(collectively,  the "FCC Application").  As promptly as practicable  thereafter,
Acquiror and Merger Sub shall deliver to the Company their respective  completed
portions of the FCC Application. As promptly as practicable,  but not later than
twenty-one  (21) calendar  days after the date hereof,  the Company and Acquiror
shall jointly file, or cause to be filed, the FCC Application.  Acquiror, Merger
Sub and the Company shall use their reasonable best efforts to prosecute the FCC
Application  in good faith and with due  diligence  in order to obtain  such FCC
consent as expeditiously as practicable.  If the Closing



                                     - 39 -
<PAGE>



shall not have  occurred for any reason within the initial  effective  period of
the granting of approval by the FCC of the FCC Application, and neither Acquiror
nor the Company shall have  terminated  this Agreement  pursuant to Section 9.1,
Acquiror and the Company  shall  jointly  request one or more  extensions of the
effective period of such grant. No party hereto shall knowingly take, or fail to
take,  any action  the intent or  reasonably  anticipated  consequence  of which
action or failure to act would be to cause the FCC not to grant  approval of the
FCC Application.

                  (b) Acquiror and the Company shall each pay one-half  (1/2) of
any FCC fees that may be payable in  connection  with the filing or  granting of
approval  of the FCC  Application.  The Company  shall pay any cost  incurred in
connection with complying with the FCC notice and advertisement  requirements in
connection with the transfer of control of the Company.

         SECTION 7.5.      HSR Act Matters.

                  Acquiror,  Merger  Sub and  the  Company  (as may be  required
pursuant to the HSR Act) promptly  will  complete all  documents  required to be
filed with the Federal  Trade  Commission  and the United  States  Department of
Justice in order to comply  with the HSR Act and,  not later than  fifteen  (15)
calendar days after the date hereof,  together with the persons, if any, who are
required to join in such filings, shall file such documents with the appropriate
Governmental  Entities.  Acquiror,  Merger Sub and the  Company  shall  promptly
furnish all materials  thereafter  required by any of the Governmental  Entities
having jurisdiction over such filings, and shall take all reasonable actions and
shall file and use their best efforts to have declared effective or approved all
documents  and  notifications  with  any  such  Governmental  Entity,  as may be
required  under the HSR Act or other  federal  or state  antitrust  laws for the
consummation  of the  Merger  and the other  transactions  contemplated  hereby.
Acquiror  and the  Company  shall each pay  one-half  (1/2) of all  filing  fees
related  to  compliance  with the HSR Act in  connection  with the  transactions
contemplated hereby.

         SECTION 7.6.      Public Announcements.

                  Acquiror and the Company  shall consult with each other before
issuing any press release or otherwise making any public statements with respect
to the  transactions  contemplated  hereunder and shall not issue any such press
release or make any such public statement prior to such consultation,  except as
may be  required by law or any listing  agreement  with the NYSE,  or the Nasdaq
National Market.

         SECTION 7.7.      Indemnification; Directors' and Officers' Insurance.

                  (a)  The  certificate  of  incorporation  and  bylaws  of  the
Surviving   Corporation   shall   contain  the   provisions   with   respect  to
indemnification  set forth in the certificate of incorporation and bylaws of the
Company on the date of this Agreement,  which  provisions  shall not be amended,
repealed or otherwise modified for a period of six (6) years after the Effective
Time in any manner that would adversely affect the rights  thereunder of persons
who at any time  prior to the  Effective  Time were  identified  as  prospective
indemnitees  under the certificate of  incorporation or bylaws of the Company in
respect of actions or  omissions  occurring  at or prior 



                                     - 40 -
<PAGE>



to  the  Effective  Time  (including,   without  limitation,   the  transactions
contemplated  by this  Agreement),  unless  such  modification  is  required  by
applicable law.

                  (b) From and after the Effective  Time,  Acquiror  shall cause
the Surviving Corporation to indemnify, defend and hold harmless the present and
former  officers,  directors  and  employees  of the  Company  and  the  Company
Subsidiaries  (collectively,  the  "Indemnified  Parties")  against  all losses,
expenses,  claims,  damages,  liabilities or amounts that are paid in settlement
of, with the  approval of Acquiror  (which  approval  shall not be  unreasonably
withheld),  or otherwise in connection with, any claim, action, suit, proceeding
or  investigation  (a "Claim"),  based in whole or in part on the fact that such
person is or was such a director, officer or employee and arising out of actions
or omissions  occurring at or prior to the Effective  Time  (including,  without
limitation,  the transactions  contemplated by this Agreement),  in each case to
the fullest  extent  permitted  under  Delaware  Law (and shall pay  expenses in
advance  of the  final  disposition  of any such  action or  proceeding  to each
Indemnified  Party to the fullest  extent  permitted  under  Delaware  Law, upon
receipt  from  the  Indemnified  Party  to whom  expenses  are  advanced  of the
undertaking  to repay such advances  contemplated  by Section 145(e) of Delaware
Law).

                  (c) Without limiting the foregoing,  in the event any Claim is
brought  against any  Indemnified  Party  (whether  arising  before or after the
Effective Time) after the Effective Time: (i) the Indemnified Parties may retain
its  regularly  engaged  independent  legal  counsel  as of  the  date  of  this
Agreement, or other independent legal counsel satisfactory to them provided that
such other  counsel shall be  reasonably  acceptable to Acquiror,  (ii) Acquiror
shall cause the Surviving Corporation to pay all reasonable fees and expenses of
such counsel for the  Indemnified  Parties  promptly as statements  therefor are
received,  and (iii) Acquiror  shall cause the Surviving  Corporation to use its
reasonable  efforts  to  assist  in the  vigorous  defense  of any such  matter,
provided that neither the Acquiror nor the Surviving Corporation shall be liable
for any  settlement  of any  Claim  effected  without  the  written  consent  of
Acquiror,  which consent shall not be  unreasonably  withheld.  Any  Indemnified
Party  wishing to claim  indemnification  under this Section 7.7,  promptly upon
learning of any such Claim, shall notify the Acquiror and Surviving  Corporation
(although the failure so to notify the Acquiror and Surviving  Corporation shall
not relieve the Acquiror and Surviving  Corporation from any liability which the
Acquiror and Surviving  Corporation  may have under this Section 7.7,  except to
the extent such failure prejudices the Acquiror and Surviving Corporation),  and
shall  deliver  to  the  Acquiror  and  Surviving  Corporation  the  undertaking
contemplated  by Section  145(e) of Delaware Law. The  Indemnified  Parties as a
group may retain one law firm (in addition to local  counsel) to represent  them
with respect to each such matter unless there is, under applicable  standards of
professional  conduct (as reasonably  determined by counsel to such  Indemnified
Parties) a conflict on any significant  issue between the position of any two or
more of such Indemnified  Parties,  in which event, an additional counsel as may
be required may be retained by such Indemnified Parties.

                  (d) Acquiror  shall cause to be  maintained  in effect for not
less than six (6)  years  after  the  Effective  Time the  current  policies  of
directors' and officers'  liability  insurance and fiduciary liability insurance
maintained  by the  Company  with  respect  to  matters  occurring  prior to the
Effective Time;  provided,  however,  that (i) Acquiror may substitute  therefor
policies of substantially the same coverage containing terms and conditions that
are substantially the 



                                     - 41 -
<PAGE>



same for the  Indemnified  Parties to the extent  reasonably  available and (ii)
Acquiror  shall not be required to pay an annual  premium for such  insurance in
excess of two hundred  percent  (200%) of the last annual  premium paid prior to
the date of this Agreement,  but in such case shall purchase as much coverage as
possible for such amount.

                  (e) This Section 7.7 is intended to be for the benefit of, and
shall be enforceable by, the Indemnified Parties referred to herein, their heirs
and personal representatives and shall be binding on Acquiror and Merger Sub and
the Surviving Corporation and their respective successors and assigns.  Acquiror
hereby  guarantees  the  Surviving  Corporation's  obligations  pursuant to this
Section 7.7.

         SECTION 7.8.      Employee Benefits Matters.

                  (a) Acquiror shall cause the Surviving  Corporation to provide
employee  benefits  under  plans,  programs  and  arrangements,  which,  in  the
aggregate, will provide benefits to the employees of the Company and the Company
Subsidiaries which are no less favorable, in the aggregate,  than those provided
pursuant to the plans,  programs and  arrangements  of the Company in effect and
disclosed to Acquiror on the date hereof; provided, however, that nothing herein
shall  interfere  with the Surviving  Corporation's  right or obligation to make
such changes to such plans, programs or arrangements as are necessary to conform
with applicable law.

                  (b)  Acquiror  acknowledges  and  agrees  that  prior  to  the
Effective  Time,  the Company  will take all such actions as may be necessary to
cause (i) all  participants  to become fully vested in their  benefits under the
Company's  401(k) Plan, and (ii) employer  contributions to be made with respect
to periods  prior to the  Effective  Time to the  Company's  401(k)  Plan to the
extent that such  contributions  would be made if the participants were employed
by the Company on the last day of the calendar year in which the Closing occurs.

         SECTION 7.9.      Further Action; Commercially Reasonable Efforts.

                  (a) Each of the parties shall use all commercially  reasonable
efforts to take, or cause to be taken, all appropriate  action, and do, or cause
to be done, all things  necessary,  proper or advisable under applicable laws or
otherwise to consummate and make effective the transactions contemplated by this
Agreement as promptly as practicable,  including,  without limitation, using all
its commercially reasonable efforts to obtain all licenses,  permits,  consents,
approvals,  authorizations,  qualifications and orders of Governmental  Entities
and parties to contracts  with the Company and Acquiror as are necessary for the
transactions  contemplated  herein. In case at any time after the Effective Time
any further  action is  necessary or desirable to carry out the purposes of this
Agreement,  the proper  officers and  directors of each party to this  Agreement
shall use all commercially reasonable efforts to take all such action.

                  (b) During  the  Interim  Period,  each of the  parties  shall
promptly notify the other in writing of any pending or, to the knowledge of such
party, threatened action, proceeding or investigation by any Governmental Entity
or any other person (i)  challenging or seeking  damages in connection  with the
Merger or the  conversion  of the  Capital  Stock into the Merger  Consideration
pursuant to the Merger or (ii) seeking to restrain or prohibit the  consummation
of 



                                     - 42 -
<PAGE>



the Merger or otherwise limit the right of Acquiror to own or operate all or any
portion of the business or assets of the Company.

                  (c) Each party shall use its commercially  reasonable  efforts
to refrain from taking any action, or entering into any transaction, which would
cause any of its representations or warranties contained in this Agreement to be
untrue or result in a breach of any covenant made by it in this Agreement.

         SECTION 7.10.     Negotiation With Others.

                  (a) Neither the  Company  nor any  Company  Subsidiary  shall,
through any  officer,  director,  employee,  representative,  agent or direct or
indirect  stockholder  of the  Company or any  Company  Subsidiary,  directly or
indirectly, take any action to (i) encourage, initiate or solicit the submission
of any proposal that  constitutes an Acquisition  Proposal,  (ii) enter into any
agreement  with  respect  to  or  accept  any  Acquisition  Proposal;  or  (iii)
encourage,  initiate or solicit the making of any proposal that  constitutes  or
may  reasonably  be  expected  to lead to, an  Acquisition  Proposal;  provided,
however, that nothing contained in this Section 7.10 shall prohibit the Company,
or its Board of Directors,  from making any disclosure to its stockholders that,
in the judgment of its Board of Directors in  accordance  with,  and based upon,
the advice of independent legal counsel, is required under applicable law.

                  For purposes of this Agreement,  "Acquisition  Proposal" means
any of the  following:  (i) any  merger,  consolidation  or similar  transaction
involving the Company,  (ii) any sale,  lease or other  disposition  directly or
indirectly by merger,  consolidation,  share  exchange or otherwise of assets of
the Company or Company Subsidiaries representing 20% or more of the consolidated
assets of the Company and the Company  Subsidiaries,  (iii) any issue,  sale, or
other disposition of securities (or options,  rights or warrants to purchase, or
securities  convertible into or exchangeable for, such securities)  representing
20% or more of the voting power of the Company, or (iv) any transaction in which
any person shall acquire  beneficial  ownership (as such term is defined in Rule
13d-3 under the Exchange Act), or the right to acquire  beneficial  ownership or
any "group"  (as such term is defined  under the  Exchange  Act) shall have been
formed which beneficially owns or has the right to acquire beneficial  ownership
of 35% or more of the outstanding Common Stock.

                  (b) Notwithstanding Section 7.10(a), the Board of Directors of
the  Company,  in the  exercise of and as required  by its  fiduciary  duties as
determined  in good faith by the Board of Directors of the Company in accordance
with and based upon the advice of  independent  legal  counsel,  may (i) furnish
information  to, or enter into  discussions  with,  a third  party who makes (or
requests  information  for the  purpose  of  making)  an  unsolicited  bona fide
Acquisition   Proposal,   if  such  third   party   executes   and   delivers  a
confidentiality  agreement  in  reasonably  customary  form on  terms  not  more
favorable  to such  person  or  entity  than the  terms  of the  Confidentiality
Agreement,  or (ii) withdraw or modify in any manner  adverse to the Acquiror or
propose publicly to withdraw or modify in any manner adverse to the Acquiror the
approval or  recommendation  by such Board of Directors or such committee of the
Merger or this Agreement, if and only to the extent that the Board of Directors:
(A) believes in good faith,  based on the advice of its  financial  advisor that
such  Acquisition  Proposal would, if consummated,  result in a 



                                     - 43 -
<PAGE>


transaction more favorable from a financial point of view to all stockholders of
the Company,  and (B) determines in good faith,  based upon, to the extent legal
matters are relevant to such fiduciary duties, a reasoned written opinion of its
outside legal counsel, that such action is necessary for the directors to comply
with their fiduciary duties to the stockholders  under applicable  Delaware Law;
and (C) in the event that the Board of  Directors of the Company  determines  to
withdraw  or  modify  in a  manner  adverse  to the  Acquiror  its  approval  or
recommendation  of the Merger or this  Agreement,  it shall do so only at a time
that is after the  second  business  day  following  Acquiror's  receipt  of the
written  notice in accordance  with the next  succeeding  sentence.  The Company
shall promptly notify Acquiror in writing of any such request for information or
Acquisition   Proposal,   specifying   reasonable  details  of  any  inquiry  or
Acquisition   Proposal   (including  the  identity  of  the  entity  making  the
Acquisition  Proposal,  to  the  extent  not  prohibited  by  a  confidentiality
agreement in effect on the date hereof),  and shall keep Acquiror informed as to
the status of any discussions or negotiations.

         SECTION 7.11.     Stock Merger Listing.

                  Acquiror  shall  use  all  reasonable  efforts  to  cause  the
Acquiror  Shares to be issued  pursuant to this  Agreement  to be  approved  for
listing  on the NYSE,  subject  to  official  notice of  issuance,  prior to the
Closing Date.

         SECTION 7.12.     Blue Sky.

                  Acquiror shall use  reasonable  efforts to obtain prior to the
Closing Date any necessary blue sky permits and approvals required to permit the
distribution  of the shares of Acquiror  Shares to be issued in accordance  with
the provisions of this Agreement.

         SECTION 7.13.     Affiliate Agreements.

                  At least 30 days  prior to the  Effective  Time,  the  Company
shall  deliver to  Acquiror a letter  identifying  all persons who may be deemed
affiliates  of the Company  under Rule 145 of the  Securities  Act.  The Company
shall  use all  reasonable  efforts  to  deliver  or  cause to be  delivered  to
Acquiror,  from each  person  who will be  identified  in such  letter,  written
agreements (collectively,  the "Affiliate Agreements") substantially in the form
attached to this Agreement as Exhibit A.

         SECTION 7.14.     Consent Solicitation and Supplemental Indenture.

                  (a)  As  promptly  as  practicable  after  the  execution  and
delivery of this  Agreement,  the Company shall prepare,  in  consultation  with
Acquiror,   written   materials  to  commence  a   solicitation   (the  "Consent
Solicitation")  of consents to amendments to, or waivers under,  the Indentures,
dated as of January 31, 1997,  for the Senior Notes (as defined below) among the
Company,  the  subsidiaries  of the Company  named  therein as  Guarantors,  and
Bankers  Trust  Company,  as Trustee  (the  "Indentures"),  from the Holders (as
defined in the  Indentures)  of not less than a majority in aggregate  principal
amount  of the  Senior  Notes  in order to  obtain  a  waiver  of the  Company's
compliance  with the  covenants  set forth in  Section  5.01  (iii) and  Section
5.01(iv) of the  Indentures in connection  with the  consummation  of the Merger
(the 



                                     - 44 -
<PAGE>



consents  from  such  Holders,  the  "Requisite  Consents").  The  Company  will
distribute such solicitation materials to the Holders as promptly as practicable
and will use commercially  reasonable efforts to obtain such consents,  provided
that no  consideration  shall be  offered to the  Holders  of the  Senior  Notes
pursuant to the Consent  Solicitation  for rendering  their consents  thereunder
without the prior written approval of Acquiror.  At the Effective Time, Acquiror
shall cause the  Surviving  Corporation  to execute and deliver to the Trustee a
supplemental  indenture  pursuant to, and  satisfying the  requirements  of, the
Indentures. "Senior Notes" shall mean the Company's 11.25% Senior Notes Due 2007
and 12.5% Senior Discount Notes Due 2007.

                  (b) If,  within  forty  (40) days  after the date the  Company
distributes  the  Consent   Solicitation  to  the  Holders  (the   "Solicitation
Termination  Date"),  the  Company  has not  received  the  Requisite  Consents,
Acquiror  shall  elect  (the  "Acquiror  Election")  either to (i)  commence  an
exchange  offer as set forth in Section  7.15,  or (ii) waive as a condition  of
Closing (Section  8.2(f)) that the Requisite  Consents shall have been obtained.
Acquiror  shall exercise the Acquiror  Election by delivering  written notice of
Acquiror's   election  to  the  Company  within  two  business  days  after  the
Solicitation Termination Date. If Acquiror fails to timely and properly exercise
the Acquiror Election within such two business days, Acquiror shall be deemed to
have waived the delivery of the Requisite Consents as a closing  condition.  The
Company  agrees to provide the Acquiror  with written  notice of the date of the
Solicitation  Termination  Date  at  least  five  business  days  prior  to  the
occurrence of such Solicitation Termination Date.

         SECTION 7.15.     The Exchange Offer.

                  (a) Terms of the Exchange  Offer.  As promptly as  practicable
(and in any event within five  business  days) after  Acquiror's  delivery of an
Acquiror  Election  pursuant to Section  7.14(b) hereof  electing to commence an
exchange  offer,  Acquiror shall  announce its election to commence  (within the
meaning of Rule 14d-2 under the Exchange Act) an irrevocable exchange offer (the
"Exchange Offer") to acquire all of the issued and outstanding shares of Capital
Stock in exchange for the number of fully paid and nonassessable Acquiror Shares
(the "Exchange Consideration") equal to the number that would be issued pursuant
to the Merger  (except that the Averaging  Period would end on the tenth Trading
Day immediately prior to the closing date for the Exchange Offer), and with such
other terms and  conditions  which make the Exchange Offer at least as favorable
to the  holders  of the  issued and  outstanding  shares of  Capital  Stock (and
options,  warrants and other rights to purchase  Capital Stock) as the terms and
conditions  of the Merger,  as set forth  herein.  Acquiror  shall  conduct such
Exchange Offer in accordance  with this Section 7.15 and applicable  law. To the
extent practicable in the context of the Exchange Offer the parties hereto shall
seek to provide  to each other all of the  benefits  of the  provisions  of this
Agreement.  Acquiror  hereby agrees that within two business days  following the
later to occur of the  expiration of the minimum  statutory  period during which
exchange  offers must remain open and all Exchange Offer  Conditions (as defined
below) having been  satisfied or waived,  Acquiror shall accept for exchange all
shares of Capital Stock tendered and promptly  issue the Exchange  Consideration
to the  holders of Capital  Stock who shall have  tendered  their  shares in the
Exchange Offer.




                                     - 45 -
<PAGE>



                  The  obligation of Acquiror to consummate  the Exchange  Offer
once it is  commenced  and to accept for  exchange  the shares of Capital  Stock
tendered  pursuant to the Exchange  Offer shall be subject only to the following
conditions (the "Exchange Offer Conditions"): (i) the holders of the outstanding
Capital  Stock  representing  at least 50.1% of the voting  power of the Capital
Stock (on a fully diluted  basis) as of the date the Exchange Offer is commenced
(and all shares of Capital Stock held by Acquiror,  each Acquiror Subsidiary and
each  affiliate  thereof  shall be  deemed to be  included  within  such  50.1%)
accepting the Exchange Offer,  (ii) the resignations of the Company's  directors
prior to  consummation  of the Exchange Offer and (iii) the  satisfaction of the
following  conditions  precedent  sections  of this  Agreement  (to  the  extent
applicable  to an exchange  offer):  8.1(b),  8.1(c),  8.1(d),  8.1(e),  8.2(a),
8.2(b), 8.2(c),  8.2(d), 8.2(e).  Acquiror expressly reserves the right to waive
any such condition,  to increase the consideration payable in the Exchange Offer
and to make any other changes in the terms and  conditions of the Exchange Offer
which make the  Exchange  Offer more  favorable to the holders of the issued and
outstanding  shares of Capital  Stock than the Merger and than the  requirements
for the Exchange  Offer set forth  herein.  Notwithstanding  the  foregoing,  no
change  may be made  which  (i)  causes  the  Exchange  Offer  not to  meet  the
requirements  of this  Section  7.15,  (ii)  decreases  or changes the  Exchange
Consideration  to be paid in the  Exchange  Offer,  (iii)  reduces the number of
shares of Capital  Stock  sought to be purchased  in the  Exchange  Offer,  (iv)
imposes  conditions  to the  Exchange  Offer other than those  permitted by this
Section  7.15,  (v) extends the  expiration  date of the Exchange  Offer or (vi)
otherwise  alters  or  amends  any  term of the  Exchange  Offer  in any  manner
materially adverse to the holders of shares of Capital Stock; provided, however,
that subject to the right of the parties to terminate this Agreement pursuant to
Section  9.1,  the  Exchange  Offer may be extended for any period to the extent
required to satisfy any Exchange  Offer  Condition or to the extent  required by
law or by any rule,  regulation,  interpretation  or  position of the SEC or the
staff  thereof,  so long as the Exchange  Offer shall not extend beyond June 30,
1998. Acquiror shall not acquire less than all of the shares of Capital Stock or
other securities that are tendered pursuant to the Exchange Offer.

                  (b) Exchange Offer Documents. As promptly as practicable after
the election by the Acquiror to commence of the Exchange  Offer,  Acquiror shall
convert  the Proxy  Registration  Statement  into and shall  file with the SEC a
registration  statement  (together  with the  amendments  thereof or supplements
thereto,  the  "Exchange   Registration   Statement")  in  connection  with  the
registration  under  the  Securities  Act of the  Acquiror  Shares  to be issued
pursuant to the Exchange  Offer.  Acquiror shall use all  reasonable  efforts to
have or cause  the  Exchange  Registration  Statement  to  become  effective  as
promptly as  practicable.  As promptly as  practicable  (and in any event within
five  business  days)  after the  Exchange  Registration  Statement  has  become
effective,   Acquiror  shall  commence  the  Exchange   Offer.  As  promptly  as
practicable on the date of commencement  of the Exchange  Offer,  Acquiror shall
file  with  the  SEC  a  Tender  Exchange  Offer  Statement  on  Schedule  14D-1
promulgated under the Exchange Act (together with all amendments and supplements
thereto, the "Schedule 14D-1") with respect to the Exchange Offer, and take such
steps as are reasonably necessary to cause the Exchange Offer to be disseminated
to the  holders of shares of  Capital  Stock as and to the  extent  required  by
applicable federal securities laws. The Schedule 14D-1 shall contain an offer to
exchange  (the  "Offer  to  Exchange")  and  forms  of  the  related  letter  of
transmittal  and any related  summary  advertisement  (the Schedule  14D-1,  the
Exchange Registration Statement,  the Offer to Exchange



                                     - 46 -
<PAGE>



and such other  documents as may be required by the Exchange Act, the NYSE,  the
NASD or any other  applicable  laws,  rules or  regulations,  together  with all
amendments and supplements  thereto,  the "Exchange Offer Documents").  Acquiror
shall use its best efforts to distribute such Exchange Offer Documents,  and any
other  documents  required by law or this  Agreement to all holders of shares of
Capital  Stock,  in  accordance  with the  requirements  of this  Section  7.15.
Acquiror and the Company shall correct promptly any information  provided by any
of them  for use in the  Exchange  Offer  Documents  if such  information  shall
contain any untrue  statement  of a material  fact or omit to state any material
fact required to be stated  therein or necessary in order to make the statements
contained therein, in light of the circumstances under which they were made, not
misleading,  and Acquiror shall use all reasonable efforts to cause the Schedule
14D-1 as so  corrected  to be filed  with the SEC and the other  Exchange  Offer
Documents  as so corrected  to be  disseminated  to holders of shares of Capital
Stock,  in  each  case  as and to the  extent  required  by  applicable  federal
securities  laws and this  Section  7.15.  The Company and its counsel  shall be
given a  reasonable  opportunity  to review and  comment on the  Exchange  Offer
Documents prior to their being filed with the SEC, and Acquiror will provide the
Company  and its  counsel  with copies of any  written  comments  that  Acquiror
receives from the SEC or its staff with respect to the Exchange Offer  Documents
promptly after receipt of any such comments.

                  (c) Stock  Options.  The  Exchange  Offer  will  extend to all
shares of  Capital  Stock  which may be  issued as a result of the  exercise  of
outstanding  options,  warrants and other rights to purchase or acquire  Capital
Stock, and will involve assumption of other options, warrants and rights, to the
same extent as required with respect to the Merger under Section 2.3.

                  (d) Company Recommendation.  On the date the Schedule 14D-1 is
filed   with   the   SEC,   the   Company    shall   file   with   the   SEC   a
Solicitation/Recommendation  Statement on Schedule 14D-9  promulgated  under the
Exchange  Act  (together  with  all  amendments  and  supplements  thereto,  the
"Schedule 14D-9") containing the recommendation of the Board of Directors of the
Company for the stockholders of the Company to accept the Exchange Offer, except
to  the  extent  the  Board  of  Directors  would  be  permitted  to  alter  its
recommendation  under Section 7.10(b) with respect to the Merger, and shall take
such steps as are necessary to cause the Schedule  14D-9 to be  disseminated  to
the holders of shares of Capital Stock as and to the extent required by the NASD
or  any  other  applicable  laws,  rules  and  regulations,  including,  without
limitation,  applicable  federal securities laws. The Company and Acquiror shall
amend or correct promptly any information provided by any of them for use in the
Schedule  14D-9  which shall have become  false or  misleading,  and the Company
shall  take all steps  necessary  to cause the  Schedule  14D-9 as so amended or
corrected  to be filed  with the SEC and  disseminated  to  holders of shares of
Capital Stock, in each case as and to the extent required by applicable  federal
securities  laws.   Acquiror  and  its  counsel  shall  be  given  a  reasonable
opportunity to review and comment on the Schedule 14D-9 prior to its being filed
with the SEC, and the Company will provide  Acquiror and its counsel with copies
of any written comments that the Company receives from the SEC or its staff with
respect to the Schedule 14D-9 promptly after receipt of any such comments.

                  (e)  Stockholder  List. In connection with the Exchange Offer,
the  Company  shall  cause the  Company's  transfer  agent to  furnish  Acquiror
promptly with mailing  labels  containing  the names and addresses of all record
holders of shares of Capital Stock and with 



                                     - 47 -
<PAGE>



security   position   listings  of  shares  of  Capital   Stock  held  in  stock
depositories,  each as of a  recent  date,  together  with all  other  available
listings and computer files containing  names,  addresses and security  position
listings of record holders and beneficial owners of shares of Capital Stock. The
Company shall  furnish  Acquiror with such  additional  information,  including,
without limitation,  updated listings and files of stockholders,  mailing labels
and  security  position  listings and such other  assistance  as Acquiror or its
agents may reasonably  request in communicating the Exchange Offer to record and
beneficial  holders of shares of Capital Stock.  Subject to the  requirements of
the  Securities  Act,  the  Exchange  Act,  the  NYSE,  the NASD  and any  other
applicable  laws,  rules  or  regulations,  and  except  for  such  steps as are
necessary to disseminate  the Exchange Offer  Documents and any other  documents
necessary  to  consummate  the  transactions  contemplated  by  this  Agreement,
Acquiror  shall hold in  confidence  the  information  contained in such labels,
listings  and files,  shall use such  information  only in  connection  with the
transactions  contemplated  by this  Agreement,  and, if this Agreement shall be
terminated  in  accordance  with  Section 11,  shall  deliver to the Company all
copies of, and any extracts or summaries  from, such  information  then in their
possession or control.

                  (f)  Cooperation.  In connection with the Exchange Offer,  the
Company will furnish Acquiror with such  information  (which will be treated and
held in  confidence  by Acquiror  except to the extent  required to be disclosed
pursuant to the Exchange Offer or this  Agreement) and assistance as Acquiror or
its representatives may reasonably request in connection with the preparation of
the  Exchange  Offer and  communicating  the  Exchange  Offer to the  record and
beneficial holders of shares of Capital Stock.

                  (g)  Subsequent  Merger.  In  the  event  that  the  Requisite
Consents are obtained  following  commencement of the Exchange  Offer,  Acquiror
will  continue  with the  Exchange  Offer  pursuant to this Section and promptly
following  consummation  of the Exchange Offer Acquiror will cause the Merger to
occur,  with the Exchange  Ratio equal to the exchange  ratio  applicable to the
Exchange Offer.  Acquiror will make all requisite filings in connection with the
Merger,  including the preparation and distribution of a registration  statement
and any required information  statement.  If the Requisite Consents are obtained
after the Solicitation Termination Date but prior to the time the Exchange Offer
is commenced,  Acquiror  shall either  proceed as set forth in this paragraph or
abandon the Exchange  Offer and (by written  notice to the Company)  restore the
obligations  of the  parties  with  respect to the  Merger,  fully as though the
Requisite  Consents  had been  obtained  prior to  commencement  of the Exchange
Offer.

         SECTION 7.16.     Control of Acquiror and the Company.

                  During the Interim  Period,  control of the  operations of the
Company and the Company's Subsidiaries shall remain with the Company and control
of Acquiror  and Acquiror  Subsidiaries  shall  remain with  Acquiror.  Acquiror
agrees that neither it nor any of Acquiror's Subsidiaries shall control, direct,
supervise,  or attempt to control,  direct or supervise,  the  operations of the
Company during this period. Likewise, the parties agree that neither the Company
nor any of the Company's  Subsidiaries  shall  control,  direct,  supervise,  or
attempt to control,  direct or  supervise  Acquiror  during the Interim  Period.
Notwithstanding  anything in this Agreement to the contrary,  no action shall be
taken  hereunder  constituting  an  assignment  or 



                                     - 48 -
<PAGE>



transfer of control of an FCC  license,  permit,  authorization  or  application
requiring the prior consent or approval of the FCC without first  obtaining such
consent or approval.

         SECTION 7.17.     Private Letter Ruling.

                  As promptly as  practicable,  Acquiror  and the Company  shall
jointly seek (including through the filing of an appropriate  request) a private
letter ruling from the Internal Revenue Service under Section 367(a) of the Code
that the Merger will be respected  for purposes of Section  367(a) as a tax-free
reorganization  under Section 368(a) of the Code (the "Private Letter  Ruling").
Acquiror  agrees  to  use  commercially   reasonable   efforts  to  satisfy  any
requirements  identified  by the  Internal  Revenue  Service as a  condition  to
receipt of such Private Letter Ruling. Following receipt (or internal assurances
of receipt by the staff of the Internal Revenue Service, as notified to Acquiror
in writing by one or more of the  representatives  of  Acquiror  or the  Company
assisting in the seeking of the Private  Letter  Ruling) of such Private  Letter
Ruling,  Acquiror  shall not,  and shall not permit  Merger Sub or any  Acquiror
Subsidiaries to,  intentionally  take, fail to take, or cause to be taken or not
taken any action within its control that (without  regard to any action taken or
agreed to be taken by the Company or any of its affiliates) would disqualify the
Merger as a  "reorganization"  within the meaning of Section 368(a) of the Code.
Nothing contained in this Section 7.17 shall be construed to require Acquiror to
incur substantial tax detriments or substantial direct expenses.

                                  ARTICLE VIII.

                               CLOSING CONDITIONS

         SECTION 8.1.      Conditions to Obligations of Acquiror, Merger Sub and
the Company to Effect the Merger.

                  The  respective  obligations  of Acquiror,  Merger Sub and the
Company  to effect the Merger  and the other  transactions  contemplated  herein
shall be subject to the  satisfaction  at or prior to the Effective  Time of the
following conditions, any or all of which may be waived, in whole or in part, to
the extent permitted by applicable law:

                  (a) Stockholder Approval.  This Agreement and the Merger shall
have been approved and adopted by the requisite vote of the  stockholders of the
Company in accordance with applicable law.

                  (b)  Effectiveness  of  Registration   Statement.   The  Proxy
Registration  Statement (or the Exchange  Registration  Statement as applicable)
shall have been declared  effective by the SEC under the Securities Act. No stop
order  suspending the  effectiveness of such  registration  statement shall have
been  issued by the SEC and no  proceedings  for that  purpose  shall  have been
initiated  or, to the  knowledge of Acquiror,  the Company or the  Stockholders,
threatened by the SEC.

                  (c) No Order. No Governmental Entity or federal or state court
of competent jurisdiction shall have enacted, issued,  promulgated,  enforced or
entered any  statute,  rule,



                                     - 49 -
<PAGE>



regulation,  executive  order,  decree,  judgment,  injunction  or  other  order
(whether  temporary,  preliminary or permanent),  in any case which is in effect
and  which  prevents  or  prohibits  consummation  of the  Merger  or any  other
transactions contemplated in this Agreement; provided, however, that the parties
shall use their  reasonable  best  efforts to cause any such  decree,  judgment,
injunction or other order to be vacated or lifted.

                  (d)  Stock  Merger  Listing.   The  Acquiror  Shares  issuable
pursuant to this Agreement shall have been included for listing on the NYSE upon
official notice of issuance.

                  (e) HSR Act. Any waiting  period with any  extensions  thereof
under the HSR Act shall have expired or been terminated.

         SECTION 8.2.    Additional  Conditions  to Obligations of  Acquiror and
Merger Sub.

                  The  obligations  of  Acquiror  and  Merger  Sub to effect the
Merger and the other  transactions  contemplated  in this Agreement  (except the
Principal  Stockholder  Agreement) are also subject to the following conditions,
any or all of which  may be  waived  by  Acquiror,  in whole or in part,  to the
extent permitted by applicable law:

                  (a)  Representations  and Warranties.  The representations and
warranties of the Company made in this Agreement  shall be true and correct when
made and on and as of the  Effective  Time with the same  effect as though  such
representations  and  warranties  had been made on and as of the Effective  Time
(except for  representations  and warranties that speak as of a specific date or
time, which need only be true and correct as of such date or time), except where
the failure of such  representations  and  warranties  to be so true and correct
(without  giving  effect  to any  limitation  as to  "materiality"  or  "Company
Material  Adverse  Effect" set forth  therein) does not have a Company  Material
Adverse  Effect.  Acquiror  shall  have  received  a  certificate  of the  Chief
Executive Officer or Chief Financial Officer of the Company to that effect.

                  (b) Agreements and Covenants.  The agreements and covenants of
the Company  required to be performed on or before the Effective Time shall have
been  performed  in all  material  respects.  Acquiror  shall  have  received  a
certificate of the Chief  Executive  Officer or Chief  Financial  Officer of the
Company to that effect.

                  (c) FCC  Approval.  The FCC shall have  granted by Final Order
the FCC Application,  without  conditions,  qualifications or other restrictions
that are  likely  to have an  Acquiror  Material  Adverse  Effect  or a  Company
Material  Adverse  Effect  immediately  after the Closing  Date. As used in this
Agreement,  the term  "Final  Order"  means an order,  action or  decision  of a
Governmental  Entity that has not been  reversed,  stayed or enjoined  and as to
which  the  time to  appeal,  petition  for  certiorari  or seek  reargument  or
rehearing  or  administrative  reconsideration  or review has  expired and as to
which no appeal,  reargument,  petition for  certiorari or rehearing or petition
for  reconsideration  or  application  for  review is pending or as to which any
right  to  appeal,   reargue,   petition   for   certiorari   or   rehearing  or
reconsideration or review has been waived in writing by each party having such a
right or, if any appeal,  reargument,  petition for  certiorari  or rehearing or
reconsideration  or review thereof has been 



                                     - 50 -
<PAGE>



sought,  the order or judgment  of the court or agency has been  affirmed by the
highest  court  (or the  administrative  entity  or body) to which the order was
appealed or from which the argument or rehearing  or  reconsideration  or review
was sought,  or  certiorari  has been  denied,  and the time to take any further
appeal  or  to  seek   certiorari  or  further   reargument  or  rehearing,   or
reconsideration or review, has expired.

                  (d) Other Satellite Approvals.  Each Governmental Entity other
than the FCC that has issued to the Company or any of the  Company  Subsidiaries
(i) any Company  Permit with respect to the operation of or  transmission  to or
from a Company  Satellite or a Company Ground Station that  communicates  with a
Company  Satellite,  or (ii) any Company Permit with respect to the provision of
broadcasting or communications services shall have, where required by applicable
law, approved the transfer of control or assignment,  as applicable, of all such
Company  Permits as a result of the Merger without any material  qualifications,
restrictions  or limitations  and such approval shall have become a Final Order,
except where the failure to obtain such approvals would not,  individually or in
the aggregate, have a Company Material Adverse Effect.

                  (e) Other  Approvals.  All  consents,  waivers,  approvals and
authorizations  required to be obtained,  and all filings or notices required to
be made,  by the  Company  and the  stockholders  prior to  consummation  of the
transactions  contemplated  in this Agreement  shall have been obtained from and
made with all required Governmental Entities,  other than those that the failure
to be filed,  expired  or  obtained  would not have a Company  Material  Adverse
Effect.

                  (f) Requisite Consents.  Subject to waiver pursuant to Section
7.14(b), the Requisite Consents shall have been obtained.


         SECTION 8.3.    Additional Conditions to Obligations of the Company.

                  The  obligations  of the  Company to effect the Merger and the
other  transactions   contemplated  in  this  Agreement  (except  the  Principal
Stockholder  Agreement) are also subject to the following  conditions any or all
of which  may be  waived  by the  Company,  in whole or in part,  to the  extent
permitted by applicable law:

                  (a)  Representations  and Warranties.  The representations and
warranties of Acquiror and Merger Sub made in this  Agreement  shall be true and
correct  when made and on and as of the  Effective  Time with the same effect as
though  such  representations  and  warranties  had  been  made on and as of the
Effective Time (except for  representations  and  warranties  that speak as of a
specific  date or time,  which need only be true and  correct as of such date or
time), except where the failure of such  representations and warranties to be so
true and correct (without giving effect to any limitation as to "materiality" or
"Acquiror  Material Adverse Effect" set forth therein) does not have an Acquiror
Material  Adverse  Effect.  The Company shall have received a certificate of the
Chief Executive Officer or Chief Financial Officer of Acquiror to that effect.

                  (b) Agreements and Covenants.  The agreements and covenants of
Acquiror and Merger Sub required to be performed on or before the Effective Time
shall have been



                                     - 51 -
<PAGE>



                                                                        
performed  in  all  material  respects.   The  Company  shall  have  received  a
certificate  of the  Chief  Executive  Officer  or Chief  Financial  Officer  of
Acquiror to that effect.

                  (c) FCC  Approval.  The FCC shall have  granted by Final Order
the FCC Application,  without  conditions,  qualifications or other restrictions
that are  likely  to have an  Acquiror  Material  Adverse  Effect  or a  Company
Material Adverse Effect immediately after the Closing Date.

                  (d) Other  Approvals.  All  consents,  waivers,  approvals and
authorizations  required to be obtained,  and all filings or notices required to
be made, by Acquiror prior to consummation of the  transactions  contemplated in
this  Agreement  shall  have  been  obtained  from  and made  with all  required
Governmental Entities, other than those that the failure to be filed, expired or
obtained would not have an Acquiror Material Adverse Effect.

                                   ARTICLE IX.

                        TERMINATION, AMENDMENT AND WAIVER

         SECTION 9.1.      Termination.

                  This  Agreement  may be  terminated  at any time  prior to the
Effective  Time,  whether  before or after  approval of this  Agreement  and the
Merger by the stockholders of the Company:

                                                                                
                  (a) by mutual  written  consent  of each of  Acquiror  and the
Company;

                  (b) by either the  Company or Acquiror if the other shall have
breached,  or failed to comply with, any of its obligations under this Agreement
or any  representation  or  warranty  made by such other  party  shall have been
incorrect  when made or shall  have since  ceased to be true and  correct in any
material respect,  and such breach,  failure or  misrepresentation  is not cured
within  thirty  (30) days  after  notice  thereof  and such  breach,  failure or
misrepresentation,  results  or would  reasonably  be  expected  to  result in a
Company Material Adverse Effect or an Acquiror Material Adverse Effect;

                  (c) by either Acquiror or the Company if any decree, permanent
injunction,   judgment,  order  or  other  action  by  any  court  of  competent
jurisdiction or any Governmental  Entity preventing or prohibiting  consummation
of the Merger shall have become final and nonappealable;

                  (d) by either  Acquiror or the Company if the Agreement  shall
fail to receive the requisite vote for approval and adoption by the stockholders
of the Company at the Stockholders' Meeting;

                  (e) by either the Company or Acquiror if the merger  shall not
have been consummated before June 30, 1998 (the "Termination  Date");  provided,
however,  that the right to terminate this  Agreement  under this Section 9.1(e)
shall not be  available  to any party whose  



                                     - 52 -
<PAGE>



failure to fulfill any obligation under this Agreement has been the cause of, or
resulted  in,  the  failure  of the  Effective  Time to occur on or  before  the
Termination Date.

                  (f) by  Acquiror if the Board of  Directors  of the Company or
any  committee  thereof  shall  have  withdrawn  or  modified  its  approval  or
recommendation  of the  Merger  or  this  Agreement  in any  manner  adverse  to
Acquiror,  or approved or recommended any  Acquisition  Proposal (other than the
Merger),  or shall have resolved to take any of the foregoing  actions (provided
that a  termination  pursuant to this  provision  will be subject to Section 9.3
hereof); and

                  (g) by the Company if the Board of Directors of the Company or
any  committee  thereof  shall  have  withdrawn  or  modified  its  approval  or
recommendation  of the  Merger  or  this  Agreement  in any  manner  adverse  to
Acquiror,  or approved or recommended any  Acquisition  Proposal (other than the
Merger); provided, however, that the Company has complied with all provisions of
Section 7.10(b),  including the notice provisions therein,  and the requirements
of Section 9.3 hereof  (provided that the  termination  described in this clause
(g) shall not be  effective  unless  and until the  Company  shall  have paid to
Acquiror the fee described in Section 9.3 hereof).

         SECTION 9.2.      Effect of Termination.

                  Except as  provided  in Section  9.3 or Section  10.1,  in the
event of the  termination  of this  Agreement  pursuant  to  Section  9.1,  this
Agreement shall forthwith  become void,  there shall be no liability on the part
of Acquiror,  Merger Sub or the Company or any of their  respective  officers or
directors  to the other  parties  hereto and all rights and  obligations  of any
party hereto shall cease, except (i) to the extent that such termination results
from  the  willful  or  reckless  breach  by  any  party  hereto  of  any of its
representations or warranties, or of any of its covenants or agreements, in each
case, as set forth in this Agreement, (ii) that nothing herein shall relieve any
party  for  any  breach  of  this   Agreement   and  (iii)  that   Sections  7.2
(Confidentiality) and 9.3 (Expenses) shall survive termination of this Agreement
indefinitely.

         SECTION 9.3.      Expenses.

                  (a)  The  Company   shall  pay  to  Acquiror   (the   "Company
Termination  Fee")  by wire  transfer  the  amount  of  Twenty  Million  Dollars
($20,000,000) if:

                  (i) the Company  terminates this Agreement pursuant to Section
         9.1(g),  in  which  case,  the  Company  Termination  Fee  must be paid
         simultaneously with such termination;

                  (ii) Acquiror  terminates  this Agreement  pursuant to Section
         9.1(f),  in which  case,  the Company  Termination  Fee must be paid no
         later than three business days after the termination of this Agreement;
         or

                  (iii) (A) Acquiror or the Company  terminates  this  Agreement
         pursuant to Section  9.1(d),  (B) the approval of this Agreement by the
         stockholders  of the Company  shall have not been obtained by reason of
         the failure to obtain the required vote at the Stockholders' Meeting (a
         "Company Negative Vote"), (C) at the time of such Company Negative Vote
         there shall be pending an Acquisition Proposal, and (D) within one year
         after such



                                     - 53 -
<PAGE>



         termination, the Company consummates either (1) a merger, consolidation
         or other business  combination between the Company and any other person
         (other than  Acquiror,  Merger Sub or an  affiliate of Acquiror) or (2)
         the sale of 30% or more (in voting  power) of the voting  securities of
         the Company or of 30% or more (in fair  market  value) of the assets of
         the Company and its  Subsidiaries,  on a consolidated  basis,  in which
         case, the Company  Termination Fee must be paid simultaneously with the
         closing  of  the  event   described  in  clause  (1)  or  (2)  of  this
         subparagraph.

                  (b) Except as set forth  above and in  Sections  7.4,  7.5 and
9.2,  all fees and  expenses  incurred  in  connection  with  the  Merger,  this
Agreement and the  transactions  contemplated  hereby shall be paid by the party
incurring such fees or expenses, whether or not the Merger is consummated.

         SECTION 9.4.      Amendment.

                  This  Agreement may be amended by the parties hereto by action
taken by or on behalf of their respective  Boards of Directors at any time prior
to the Effective Time; provided, however, that, after approval of this Agreement
and the Merger by the  stockholders  of the Company,  no  amendment  may be made
which  would  reduce the amount or change the type of  consideration  into which
each share of Capital Stock shall be converted  pursuant to this  Agreement upon
consummation  of the  Merger  or which by law  otherwise  requires  the  further
approval of such  stockholders.  This  Agreement may not be amended except by an
instrument in writing signed by the parties hereto.

         SECTION 9.5.      Waiver.

                  At any time prior to the  Effective  Time,  each party may (a)
extend the time for the  performance of any of the  obligations or other acts of
the other  parties,  (b)  waive  any  inaccuracies  in the  representations  and
warranties  contained in this Agreement or in any document delivered pursuant to
this  Agreement  by the  other  parties  and (c) waive  compliance  by the other
parties with any of the  agreements or conditions  contained in this  Agreement.
Any such  extension or waiver shall be valid only if set forth in an  instrument
in writing  signed on behalf of such  party.  No delay or failure on the part of
any party  hereto  in  exercising  any  right,  power or  privilege  under  this
Agreement or under any other  instrument or document given in connection with or
pursuant to this Agreement shall impair any such right, power or privilege or be
construed as a waiver of any default or any acquiescence  therein.  No single or
partial  exercise of any such  right,  power or  privilege  shall  preclude  the
further exercise of such right, power or privilege, or the exercise of any other
right, power or privilege.




                                     - 54 -
<PAGE>



                                   ARTICLE X.

                               GENERAL PROVISIONS

         SECTION  10.1.   Nonsurvival   of   Representations,   Warranties   and
Agreements.

                  The   representations,   warranties  and  agreements  in  this
Agreement  (and in any  certificate  delivered in  connection  with the Closing)
shall be deemed to be  conditions  to the  Merger  (or the  Exchange  Offer,  as
applicable)  and shall not survive the Effective  Time (or  consummation  of the
Exchange Offer, as applicable) or termination of this Agreement,  except for the
agreements  set  forth  in  Articles  I  (the  Merger)  and  II  (Conversion  of
Securities;  Exchange of  Certificates)  and Sections 7.7  (Indemnification  and
Insurance),  7.8 (Employee  Benefits  Matters) 7.9 (Further  Action) and 7.15(g)
(Subsequent  Merger),  each of  which  shall  survive  the  Effective  Time  (or
consummation of the Exchange Offer,  as applicable)  indefinitely,  and Sections
7.2 (Confidentiality),  9.2 (Effect of Termination) and 9.3 (Expenses),  each of
which shall survive termination of this Agreement indefinitely.

         SECTION 10.2.     Notices.

                  All notices and other  communications  given or made  pursuant
hereto  shall be in writing  and shall be deemed to have been duly given or made
as of the date  delivered,  mailed or  transmitted,  and shall be effective upon
receipt,  if  delivered  personally,  mailed by  registered  or  certified  mail
(postage  prepaid,  return  receipt  requested)  to the parties at the following
addresses  (or at such other  address for a party as shall be  specified by like
changes of address) or sent by electronic  transmission to the telecopier number
specified below:

                  (a)    If to Acquiror:

                         Loral Space & Communications Ltd.
                         600 Third Avenue
                         New York, New York  10016
                         Telecopier No.: (212) 338-5350
                         Attention: Eric J. Zahler, Esq.

                         With  a copy  (which  shall  not  constitute
                         notice) to:

                         Willkie Farr & Gallagher
                         One Citicorp Center
                         153 East 53rd Street
                         New York, New York  10022
                         Telecopier No.: (212) 821-8111
                         Attention: Bruce R. Kraus, Esq.




                                     - 55 -
<PAGE>



                  (b)    If to the Company:

                         Orion Network Systems, Inc.
                         2440 Research Boulevard
                         Suite 400
                         Rockville, Maryland  20850
                         Telecopier No.: (301) 258-3300
                         Attention: President

                         With  a copy  (which  shall  not  constitute
                         notice) to:

                         Hogan & Hartson L.L.P.
                         Columbia Square
                         555 Thirteenth Street, N.W.
                         Washington, DC 20004
                         Telecopier No.:  (202) 637-5910
                         Attention:  Anthony S. Harrington, Esq.

         SECTION 10.3.     Certain Definitions.

                  For purposes of this Agreement, the term:

                  (a)  "affiliate"  means a person that directly or  indirectly,
through one or more  intermediaries,  controls,  is  controlled  by, or is under
common control with, the first mentioned person;

                  (b)  "beneficial  owner"  means with  respect to any shares of
Capital  Stock or  Acquiror  Shares  a person  who  shall  be  deemed  to be the
beneficial  owner of such shares (i) which such person or any of its  affiliates
or associates beneficially owns, directly or indirectly,  (ii) which such person
or any of its affiliates or associates (as such term is defined in Rule 12b-2 of
the Exchange Act) has, directly or indirectly, (A) the right to acquire (whether
such right is  exercisable  immediately or subject only to the passage of time),
pursuant to any agreement,  arrangement or understanding or upon the exercise of
conversion rights,  exchange rights,  warrants or options, or otherwise,  or (B)
the right to vote pursuant to any agreement, arrangement or understanding, (iii)
which are beneficially owned, directly or indirectly,  by any other persons with
whom such  person or any of its  affiliates  or  associates  has any  agreement,
arrangement  or  understanding  for the purpose of acquiring,  holding voting or
disposing of any such shares or (iv)  pursuant to Section  13(d) of the Exchange
Act and any rules or regulations promulgated thereunder;

                  (c)  "business  day"  shall  mean any day other  than a day on
which banks in the State of Maryland are authorized or obligated to be closed;

                  (d) "control"  (including the terms "controlled by" and "under
common control with") means the possession, directly or indirectly or as trustee
or executor,  of the power to direct or cause the direction of the management or
policies of a person,  whether  through the  ownership of stock or as trustee or
executor, by contract or credit arrangement or otherwise;




                                     - 56 -
<PAGE>



                  (e) "person"  means an individual,  corporation,  partnership,
association,  trust,  unincorporated  organization,  other  entity  or group (as
defined in Section 13(d) of the Exchange Act);

                  (f) "reasonable  efforts" shall mean, as to a party hereto, an
undertaking  by such  party to  perform  or  satisfy  an  obligation  or duty or
otherwise act in a manner reasonably calculated to obtain the intended result by
action  or  expenditure  not   disproportionate  or  unduly  burdensome  in  the
circumstances,  which means,  among other  things,  that such party shall not be
required  to (i) expend  funds  other than for  payment  of the  reasonable  and
customary costs and expenses of employees, counsel, consultants, representatives
or agents of such party in connection  with the  performance or  satisfaction of
such  obligation  or duty  or  other  action  or (ii)  institute  litigation  or
arbitration as a part of its reasonable efforts.

         SECTION 10.4.     Headings.

                  The headings  contained in this  Agreement  are for  reference
purposes only and shall not affect in any way the meaning or  interpretation  of
this Agreement.

         SECTION 10.5.     Severability.

                  If any term or other  provision of this  Agreement is invalid,
illegal or incapable of being enforced by any rule of law or public policy,  all
other conditions and provisions of this Agreement shall  nevertheless  remain in
full  force  and  effect  so long as the  economic  or  legal  substance  of the
transactions  contemplated  hereby  is not  affected  in any  manner  materially
adverse to any party. Upon such  determination  that any term or other provision
is invalid,  illegal or incapable of being  enforced,  the parties  hereto shall
negotiate  in good faith to modify this  Agreement  so as to effect the original
intent of the parties as closely as possible in an acceptable  manner to the end
that transactions contemplated hereby are fulfilled to the extent possible.

         SECTION 10.6.     Entire Agreement.

                  This Agreement (together with the Exhibits,  the Schedules and
the other documents delivered pursuant hereto) and the Confidentiality Agreement
constitute  the  entire  agreement  of  the  parties  and  supersede  all  prior
agreements and undertakings,  both written and oral, between the parties, or any
of them,  with  respect to the subject  matter  hereof and,  except as otherwise
expressly  provided herein, are not intended to confer upon any other person any
rights or remedies hereunder.

         SECTION 10.7.     Specific Performance.

                  The  transactions  contemplated  by this Agreement are unique.
Accordingly,  each of the parties  acknowledges  and agrees that, in addition to
all other  remedies to which it may be entitled,  each of the parties  hereto is
entitled  to a decree of  specific  performance,  provided  such party is not in
material default hereunder.




                                     - 57 -
<PAGE>



         SECTION 10.8.     Assignment.

                  Neither  this  Agreement  nor any of the rights,  interests or
obligations hereunder shall be assigned by any of the parties hereto (whether by
operation of law or otherwise)  without the prior  written  consent of the other
party. Subject to the preceding sentence,  this Agreement shall be binding upon,
inure to the benefit of and be enforceable  by the parties and their  respective
successors and assigns.

         SECTION 10.9.     Third Party Beneficiaries.

                  This  Agreement  shall be binding upon and inure solely to the
benefit of each party hereto, and nothing in this Agreement, express or implied,
is  intended  to or shall  confer  upon any other  person any right,  benefit or
remedy of any nature  whatsoever under or by reason of this Agreement except for
(a) the Indemnified Parties under Section 7.7, and (b) the rights of the holders
of Capital  Stock to  receive  the  Merger  Consideration  payable in the Merger
pursuant to Article II or to receive the Exchange  Consideration  payable in the
Exchange Offer pursuant to Section 7.15.

         SECTION 10.10.    Governing Law.

                  This  Agreement   shall  be  governed  by,  and  construed  in
accordance  with, the Delaware Law,  regardless of the laws that might otherwise
govern under applicable principles of conflicts of law.

         SECTION 10.11.    Counterparts.

                  This  Agreement  may be executed and  delivered in one or more
counterparts, and by the different parties hereto in separate counterparts, each
of which when executed and  delivered  shall be deemed to be an original but all
of which taken together shall constitute one and the same agreement.





                                     - 58 -
<PAGE>





                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Agreement  and Plan of Merger to be executed and  delivered as of the date first
written above.

                                   LORAL SPACE & COMMUNICATIONS LTD.

                                   By: /s/ Eric J. Zahler
                                   Name:  Eric J. Zahler
                                   Title:   Vice President, General
                                            Counsel and Secretary

                                   LORAL SATELLITE CORPORATION

                                   By: /s/ Eric J. Zahler
                                   Name:  Eric J. Zahler
                                   Title:   Vice President, General
                                            Counsel and Secretary

                                   ORION NETWORK SYSTEMS, INC.

                                   By:  /s/ W. Neil Bauer
                                   Name:  W. Neil Bauer
                                   Title:  President and Chief Executive Officer




<PAGE>

                    EXHIBIT A TO AGREEMENT AND PLAN OF MERGER

                            FORM OF AFFILIATE LETTER



                          _________________ _____, 1997



Loral Space & Communications Ltd.
600 Third Avenue
New York, New York  10016

Ladies and Gentlemen:

         I have been advised that as of the date hereof I may be deemed to be an
"affiliate" of Orion Network Systems, Inc., a Delaware corporation (the
"Company"), as the term "affiliate" is defined for purposes of paragraphs (c)
and (d) of Rule 145 of the rules and regulations (the "Rules and Regulations")
of the Securities and Exchange Commission (the "Commission") under the
Securities Act of 1933, as amended (the "Act"). I have been further advised that
pursuant to the terms of the Agreement and Plan of Merger dated as of October 7,
1997 (the "Merger Agreement"), among the Company, Loral Space & Communications
Ltd., a Bermuda company ("Acquiror"), and Loral Satellite Corporation, a
Delaware corporation and wholly-owned subsidiary of Acquiror ("Merger Sub"),
Merger Sub will be merged with and into the Company (the "Merger"), and that as
a result of the Merger, I may receive Acquiror Shares (as defined in the Merger
Agreement), in exchange for shares of Common Stock (as defined in the Merger
Agreement), owned by me.

         I represent, warrant and covenant to Acquiror that in the event I
receive any Acquiror Shares as a result of the Merger:

         (a) I shall not make any sale, transfer or other disposition of the
Acquiror Common Stock in violation of the Act or the Rules and Regulations.

         (b) I have carefully read this letter and the Merger Agreement and
discussed their respective requirements and other applicable limitations upon my
ability to sell, transfer or otherwise dispose of Acquiror Shares.

         (c) I have been advised that the issuance of Acquiror Shares to me
pursuant to the Merger will be registered with the Commission under the Act on a
Registration Statement on Form S-4. However, I have also been advised that,
since at the time the Merger will be submitted for a vote of the stockholders of
the Company, I may be deemed to have been an affiliate of the Company and the
distribution by me of Acquiror Shares has not been registered under the Act, I
may not sell, transfer or otherwise dispose of Acquiror Shares issued to me in
the

<PAGE>

Merger unless (i) such sale, transfer or other disposition has been registered
under the Act, (ii) such sale, transfer or other disposition is made in
conformity with the volume and other limitations of Rule 145 promulgated by the
Commission under the Act, or (iii) in accordance with a legal opinion of counsel
reasonably acceptable to Acquiror, such sale, transfer or other disposition is
otherwise exempt from registration under the Act.

         (d) I understand that Acquiror is under no obligation to register the
sale, transfer or other disposition of Acquiror Shares by me or on my behalf
under the Act or to take any other action necessary in order to make compliance
with an exemption from such registration available.

         (e) I also understand that stop transfer instructions will be given to
Acquiror's transfer agent with respect to Acquiror Shares and that there will be
placed on the certificates for Acquiror Shares issued to me, or any
substitutions therefor, a legend stating in substance:

                           "The securities represented by this certificate have
                  been issued in a transfer to which Rule 145 promulgated under
                  the Securities Act of 1933 applies and may only be sold or
                  otherwise transferred in compliance with the requirements of
                  Rule 145 or pursuant to a registration statement under said
                  act or an exemption from such registration."

          (f) I also  understand  that unless the  transfer by me of my Acquiror
Shares has been  registered  under the Act or is a sale made in conformity  with
the  provisions  of Rule 145,  Acquiror  reserves the right to put the following
legend on the certificates issued to my transferee:

                           "The shares represented by this certificate have not
                  been registered under the Securities Act of 1933 and were
                  acquired from a person who received such shares in a
                  transaction to which Rule 145 promulgated under the Securities
                  Act of 1933 applies. The shares have been acquired by the
                  holder not with a view to, or for resale in connection with,
                  any distribution thereof within the meaning of the Securities
                  Act of 1933 and may not be sold, pledged or otherwise
                  transferred except in accordance with an exemption from the
                  registration requirements of the Securities Act of 1933."

         It is understood and agreed that the legends set forth in paragraphs
(e) and (f) above shall be removed by delivery of substitute certificates
without such legend if the undersigned shall have delivered to Acquiror a copy
of a letter from the staff of the Commission, or a legal opinion of counsel in
form and substance reasonably satisfactory to Acquiror, to the effect that such
legend is not required for purposes of the Act.

         Execution of this letter  should not be construed as an admission by me
that I am an  "affiliate"  of the Company as  described  in the first  paragraph
hereof or  considered as a waiver of any rights that I may have to object to any
claim that I am such an affiliate on or after the date hereof.




                                     - 2 -
<PAGE>



         I understand that pursuant to the Merger Agreement,  no certificate for
Acquiror  Shares  shall  be  delivered  to  me  in  exchange  for   certificates
representing Common Stock until I have executed and delivered this Agreement.

                                      Very truly yours,



                                      By:______________________________
                                      Name:_________________________


Accepted this _ day of
___________________, 1997 by

LORAL SPACE & COMMUNICATIONS LTD.


By:___________________
Name:_________________
Title:________________













                                     - 3 -











<PAGE>




                                                      EXHIBIT 3

                             JOINT FILING AGREEMENT

         The undersigned hereby agree that the statement on Schedule 13D dated
October 17, 1997, with respect to the Common Stock of Orion Network Systems,
Inc. is, and any amendments thereto signed by each of the undersigned shall be,
filed on behalf of each of us pursuant to and in accordance with the provisions
of Rule 13d-1(f) under the Securities Exchange Act of 1934.

         This Agreement may be executed in counterparts, each of which shall for
all purposes be deemed to be an original and all of which shall constitute one
and the same instrument.




Dated:  October 17, 1997

                                            LORAL SPACE & COMMUNICATIONS LTD.

                                            By:   /s/ Eric J. Zahler
                                                 -------------------------------
                                                 Name: Eric J. Zahler
                                                 Title:  Vice President, 
                                                         Secretary and General
                                                         Counsel


                           
                                             LORAL SATELLITE CORPORATION

                                              By:   /s/ Eric J. Zahler
                                                   -----------------------------
                                                   Name: Eric J. Zahler
                                                   Title:  Vice President, 
                                                           Secretary and General
                                                           Counsel




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