UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                       PURSUANT TO SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

 Date of Report (Date of Earliest Event Reported): JANUARY 25, 2006 (JANUARY 23,
                                      2006)

                       ----------------------------------
                                 SPACEDEV, INC.
               (Exact Name of Registrant as Specified in Charter)
                       ----------------------------------

          COLORADO                  000-28947                   84-1374613
(State or Other Jurisdiction   (Commission File Number)       (IRS Employer
     of Incorporation)                                       Identification No.)

                 13855 STOWE DRIVE, POWAY, CALIFORNIA        92064
             (Address of Principal Executive Offices)     (Zip Code)

       Registrant's Telephone Number, Including Area Code: (858) 375-2030

Check  the  appropriate  box  below  if  the  Form  8-K  filing  is  intended to
simultaneously  satisfy the filing obligation of the registrant under any of the
following  provisions  (see  General  Instruction  A.2.  below):

[  ]  Written  communications pursuant to Rule 425 under the Securities Act (17 
CFR 230.425)

[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

[  ]  Pre-commencement  communications  pursuant  to  Rule  14d-2(b)  under  the
Exchange Act  (17  CFR  240.14d-2(b))

[  ]  Pre-commencement  communications  pursuant  to  Rule  13e-4(c)  under  the
Exchange Act  (17  CFR  240.13e-4(c))

                                      PAGE 



ITEM  8.01.  OTHER  EVENTS.

     On  January  23,  2006,  SpaceDev  filed a joint proxy statement/prospectus
supplement  no.  1,  which  we  refer  to  as  supplement  no.  1,  updating and
supplementing  our  joint  proxy  statement/prospectus  dated December 29, 2005,
which  forms  part  of our registration statement on Form S-4 (Registration File
No.  333-130244).  The  joint  proxy statement/prospectus relates to the special
meetings  of the shareholders of SpaceDev, Inc. and Starsys Research Corporation
and  the  proposed  merger of Starsys with and into a wholly-owned subsidiary of
SpaceDev,  including  the issuance of shares of SpaceDev common stock to Starsys
shareholders  pursuant  to  the  related  agreement  and  plan  of   merger  and
reorganization.  This  supplement  is being sent to shareholders of SpaceDev and
Starsys  to  advise them of the financing that SpaceDev recently consummated and
to  update  the  description  of  appraisal  rights  under  California  law.

     Among  other  things, supplement no.1 includes a supplemental discussion of
risk  factors  related  to  the  proposed  merger  referred  to in the preceding
paragraph,  describes  a  significant  financing recently completed by SpaceDev,
discusses  the  rights  of  purchasers  of SpaceDev securities in that financing
(including  a  description  of  the new Series D Preferred Stock Certificates of
Designation),  and  updates  information about dissenters' appraisal rights with
respect to the proposed merger.  A complete copy of supplement no. 1 is filed as
exhibit  99.1  hereto.  The  summaries  of  the transactions and the information
included  in  supplement no. 1 set forth above do not purport to be complete and
are  qualified  in  their entirety by reference to this exhibit, which should be
reviewed  carefully.

ITEM  9.01.              FINANCIAL  STATEMENTS  AND  EXHIBITS.

     (c)  Exhibits.

99.1 Joint Proxy Statement/Prospectus Supplement No. 1 filed January 23, 2006 to
     the Joint Proxy Statement/Prospectus filed on December 29, 2005



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                                   SIGNATURES

     Pursuant  to  the  requirements of the Securities Exchange Act of 1934, the
registrant  has  duly  caused  this  report  to  be  signed on its behalf by the
undersigned  hereunto  duly  authorized.

                                    SPACEDEV,  INC.

Date:  January  25,  2006           By:     /s/  RICHARD  B.  SLANSKY
                                        ---------------------------------------
                                    Richard  B.  Slansky
                                    President  &  Chief  Financial  Officer



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