EX-4.2





 Exhibit 4.2 
  

			
	NUMBER	  	SHARES
	C-	  	

 SEE REVERSE FOR CERTAIN DEFINITIONS 

CUSIP [     ] 

SPACE ACQUISITION CORP. I 

CLASS A ORDINARY SHARES 

THIS CERTIFIES THAT                 is the owner
of                Class A ordinary shares, par value $0.0001 per share (each, a “Class A Ordinary Share”), of
Space Acquisition Corp. I, a Cayman Islands exempted company (the “Company”), transferable on the books of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed. 

This certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar of the Company. 

Witness the facsimile signature of a duly authorized signatory of the Company. 

 

					
	     Authorized Signatory
	 		  	Transfer Agent
	  
	 		  	  














 Space Acquisition Corp. I 

The Company will furnish without charge to each shareholder who so requests, a statement of the powers, designations, preferences and
relative, participating, optional or other special rights of each class of equity or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences and/or rights. This certificate and the shares represented
thereby are issued and shall be held subject to all the provisions of the Amended and Restated Memorandum and Articles of Association of the Company and all amendments thereto and resolutions of the Board of Directors providing for the issue of
securities (copies of which may be obtained from the secretary of the Company), to all of which the holder of this certificate by acceptance hereof assents. 

The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out
in full according to applicable laws or regulations: 
  

											
	 TEN COM
	  	—  	  	as tenants in common	  	UNIF GIFT MIN ACT	  	—  	  	                Custodian               
     
		  		  		  		  		  	(Cust)                         (Minor)
	 TEN ENT
	  	—  	  	as tenants by the entireties	  		  		  	
		  		  		  		  		  	Under Uniform Gifts to Minors Act
	 JT TEN
	  	—  	  	 as joint tenants with right of survivorship

and not as tenants in common
	  		  		  	  

        (State)


 Additional abbreviations may also be used though not in the above list. 

For value received,                hereby sells, assigns
and transfers unto 
 (PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S)) 

(PLEASE PRINT OR TYPEWRITE NAME(S) AND ADDRESS(ES), INCLUDING ZIP CODE, OF ASSIGNEE(S)) 

Class A Ordinary Shares represented by the within certificate, and do hereby irrevocably constitute and appoint 

Attorney to transfer the said Class A Ordinary Shares on the books of the within named Company with full power of substitution in the
premises. 
 Dated 
  

			
	 Notice:
	 	  
 The signature to this assignment
must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

	  
 Signature(s)
Guaranteed:
  
	 	
	  
 THE SIGNATURE(S) MUST BE GUARANTEED
BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15
UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED (OR ANY SUCCESSOR RULE)).
	 	













 As more fully described in, and subject to the terms and conditions described in, the
Company’s final prospectus for its initial public offering dated                 , the holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain funds held in the trust account established in connection with the Company’s initial public offering in the event that (i) the Company redeems the Class A Ordinary Shares
sold in its initial public offering and liquidates because it does not consummate an initial business combination within the time period set forth in the Company’s Amended and Restated Memorandum and Articles of Association, as the same may be
amended from time to time, or (ii) if the holder(s) properly redeem for cash his, her or its respective Class A Ordinary Shares represented by this certificate in connection with (x) a tender offer (or proxy solicitation, solely in
the event the Company seeks shareholder approval of the proposed initial business combination) setting forth the details of a proposed initial business combination or (y) a shareholder vote to amend the Company’s Amended and Restated
Memorandum and Articles of Association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with our initial business combination or to redeem 100% of the Class A Ordinary Shares if it
does not consummate an initial business combination within the time set forth in the Company’s Amended and Restated Memorandum and Articles of Association, as the same may be amended from time to time or (B) with respect to any other
material provisions relating to shareholders’ rights or pre-initial Business Combination activity. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust
account.