<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>doc2.txt
<DESCRIPTION>CONSENT OF PKF
<TEXT>


                                                                    EXHIBIT 23.1


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

SpaceDev,  Inc.
Poway,  CA


            We  consent  to the inclusion in this Post Effective Amendment No. 1
to  Form  SB-2  of  SpaceDev, Inc. (333-131778) of our report dated February 10,
2005,  relating  to  the consolidated financial statements of SpaceDev, Inc. for
the  years ended December 31, 2005 and 2004. We also consent to the inclusion in
this  Post  Effective  Amendment  No.  1  to  Form  SB-2 (333-131778) of Starsys
Research  Corporation  of  our  report  dated  March  3,  2006,  relating to the
financial statements of Starsys Research Corporation for the year ended December
31,  2005.

San  Diego,  California                          /s/ PKF
June  7,  2006                                   PKF
                                                 Certified  Public  Accountants
                                                 A  Professional  Corporation


</TEXT>
</DOCUMENT>