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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
                                    FORM 8-K/A
                            ------------------------
                                 CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of Earliest Event Reported): DECEMBER 13, 2005 (DECEMBER 7,
                                      2005)

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

        COLORADO                     000-28947                   84-1374613
(State or Other Jurisdiction                                   (IRS Employer
   of Incorporation)           (Commission File Number)     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  1.01.  ENTRY  INTO  A  MATERIAL  DEFINITIVE  AGREEMENT.
     AMENDMENT  NO.  1  TO  AGREEMENT  AND  PLAN  OF  MERGER  AND REORGANIZATION

     On December 7, 2005, SpaceDev, Inc. ("SpaceDev") entered into Amendment No.
1,  which  we refer to as the amendment, to the Agreement and Plan of Merger and
Reorganization,  which  we  refer to as the merger agreement, made as of October
24,  2005 with Starsys Research Corporation, a Colorado corporation ("Starsys"),
Scott  Tibbitts,  its  largest  shareholder,  and Scott Tibbitts, as shareholder
agent  for  the other shareholders of Starsys. Pursuant to the merger agreement,
Starsys  will  merge  with  and into a newly-created, wholly-owned subsidiary of
SpaceDev,  which  we  refer  to  as  the  merger.

     The  merger agreement is subject to a number of conditions described below.
One  closing condition in the merger agreement required that the volume weighted
average  price  of SpaceDev common stock on the trading day prior to the closing
of  the  merger  would be not less than $0.77 per share. The amendment increases
this  minimum  average  price  to  $1.00  per  share.  If this condition was not
satisfied,  both SpaceDev and Starsys would have to waive the condition to close
the  merger.

     The  original  merger  agreement also contained a provision allowing either
SpaceDev  or   Starsys   to   terminate  the  merger   agreement  under  certain
circumstances  if  the  merger did not occur by December 31, 2005. This deadline
applied if the SEC did not review the Form S-4 registration statement being used
to  register  the  shares being issued by SpaceDev in connection with the merger
(or any other SpaceDev filing with the SEC), and the shares of SpaceDev were not
then  listed on the American Stock Exchange. The amendment extends this deadline
until  January  31,  2006 .

     The amendment also provides that the resignation, removal and succession of
the  shareholder  agent  under  the  merger  agreement  will  be governed by the
provisions of the related escrow agreement, which is to be signed by the parties
prior  to  or  at the closing. Under the escrow agreement, the shareholder agent
may resign upon twenty days notice and may be removed at any time by the persons
who  held  a majority of the outstanding shares of Starsys immediately preceding
the  merger.  Upon  a resignation or removal, persons who held a majority of the
outstanding  shares  of  Starsys immediately preceding the merger would have the
obligation to appoint a successor shareholder agent. However, if they fail to do
so  within  ten  days  of  the  resignation or removal or the shareholder agent,
SpaceDev  may  petition  a  competent  court  to appoint a successor shareholder
agent.

     AGREEMENT  AND  PLAN  OF  MERGER  AND  REORGANIZATION

     Merger Consideration.  Starsys shareholders will be entitled to receive the
following  consideration  at  the  effective  time  of  the  merger,  subject to
reduction  as  provided  in  the  merger  agreement:

-    cash  in  the  aggregate  amount  of  up  to  $1,500,000;  and,

-    an  aggregate  number  of  shares  of  SpaceDev  common  stock equal to the
     quotient of (A) up to $7,500,000 divided by (B) the volume weighted average
     price  of  SpaceDev  common  stock  for  the  20 trading days preceding the
     merger,  but  not  less  than  $1.40  or  more  than  $1.90.

     The  cash and shares to be paid at the closing of the merger are subject to
reduction  for  transaction  expenses and a working capital adjustment.  Starsys
management  currently  anticipates  that,  after these reductions, approximately
$605,000  in  cash  and  up  to  $6,419,000  in shares of SpaceDev common stock,
calculated  as  described  above,  will  be  paid to Starsys shareholders at the
closing  of  the  merger.

     Approximately  one  half of the shares issued pursuant to the merger at the
closing  or for the first performance period will be placed in escrow to satisfy
indemnification  obligations  of Starsys shareholders under the merger agreement
and to pay certain expenses of the shareholder agent. The indemnification escrow
will  generally  last  until  ten  days  following the date of audited financial
statements  prepared  for  the  surviving corporation for the fiscal year ending
2006  (i.e.,  approximately  April  2007).

     Following the merger, Starsys shareholders may also be entitled to receive,
based on the achievement by the Starsys business of certain performance criteria
after  the  closing, additional performance consideration consisting of up to an
aggregate of $1,050,000 in cash and shares of SpaceDev common stock valued at up
to $18,000,000, subject to reduction for some merger related expenses and to the
aforesaid  escrow  arrangements,  as  follows:


                                      PAGE 1              


-    For  the fiscal year ended December 31, 2005, up to $350,000 in cash and up
     to  an  aggregate  number  of  shares of SpaceDev common stock equal to the
     quotient of (A) up to $3,000,000 divided by (B) the volume weighted average
     price  of  SpaceDev  common stock for the twenty trading days preceding the
     date of the audit opinion for Starsys' fiscal year ended December 31, 2005,
     but  not  less  than  $2.00;

-    For  the fiscal year ended December 31, 2006, up to $350,000 in cash and up
     to  an  aggregate  number  of  shares of SpaceDev common stock equal to the
     quotient of (A) up to $7,500,000 divided by (B) the volume weighted average
     price  of  SpaceDev  common stock for the twenty trading days preceding the
     date of the audit opinion for Starsys' fiscal year ended December 31, 2006,
     but  not  less  than  $2.50;  and

-    For  the fiscal year ended December 31, 2007, up to $350,000 in cash and up
     to  an  aggregate  number  of  shares of SpaceDev common stock equal to the
     quotient of (A) up to $7,500,000 divided by (B) the volume weighted average
     price  of  SpaceDev  common stock for the twenty trading days preceding the
     date of the audit opinion for Starsys' fiscal year ended December 31, 2007,
     but  not  less  than  $3.00.

     If  any  shares  of  SpaceDev  common  stock  are  payable  as  performance
consideration  for  the  fiscal  year ending December 31, 2005, fifty percent of
those shares will be deposited in the indemnification escrow described above. In
addition,  1%  of  any  shares  of  SpaceDev common stock payable as performance
consideration  will  be  paid  as  transaction  expenses  to  Robert  Vacek, the
president  of  Starsys.

     Starsys  shareholders  will  be  entitled  to receive the maximum amount of
performance  consideration  for  a particular fiscal year if SpaceDev materially
breaches  specific  covenants  of the merger agreement and is unable to cure the
breach  within  the  cure  period  set  forth  in  the  merger  agreement.

     Each  outstanding  share  of SpaceDev common stock will remain unchanged in
the  merger.

Working  Capital  Contribution.  SpaceDev  will  contribute  $2.5 million to the
working  capital  of  the  surviving  corporation  through  the  end  of  2006.

     Treatment  of  Stock Options and Warrants. The holders of options, warrants
and  other  rights to purchase Starsys common stock must exercise such rights on
or  before  the  closing of the merger. Any options, warrants or other rights to
purchase  Starsys  common  stock which are not exercised prior to the closing of
the merger will be cancelled and will terminate and expire as of that closing of
the  merger.  SpaceDev  will  assume  no  options,  warrants  or other rights to
purchase  Starsys  common  stock  pursuant  to  the  merger.


     Loan  Repayments.  At  the closing of the merger, SpaceDev will (i) pay off
the  remaining  principal  and interest of all loans to Starsys from Vectra Bank
Colorado, which we refer to as Vectra, together with any other costs incurred in
connection  with those loans, (ii) cancel and terminate the secured loan of $1.2
million  and  all  accrued interest and fees, from SpaceDev to Starsys, which we
refer  to  as  the  SpaceDev  loan,  and (iii) pay off subordinated loans in the
aggregate  amount  of  approximately $920,000 owed by Starsys to certain Starsys
shareholders.  However,  SpaceDev  will  not  be  obligated to pay off more than
$4,600,000  in the aggregate (excluding the amount of the SpaceDev loan) for all
of  the  loans  and  related  costs  described  above.

     Reservation  of  Options.  SpaceDev  has  agreed to reserve for issuance to
Starsys officers, employees and consultants options to buy a number of shares of
SpaceDev  common stock equal to at least 15% of the number of shares of SpaceDev
common  stock issued at the closing and as earnout consideration.  SpaceDev will
seek  approval  of  its  shareholders to increase the amount of shares available
under  the  SpaceDev  2004 Equity Incentive Plan, or under a new stock or equity
plan  to  be  adopted,  to  provide  sufficient reserves for the issuance of the
options  referenced  above.

     Representations,  Warranties  and Covenants. SpaceDev and Starsys have made
customary  representations,  warranties  and  covenants in the merger agreement,
including,  among others, covenants (i) not to (A) solicit proposals relating to
alternative  business  combination  transactions  or  (B)   subject  to  certain
exceptions,  enter  into  discussions  concerning  or   provide  information  in
connection  with  alternative  business  combination transactions, (ii) to cause
shareholder meetings to be held to consider approval of the merger agreement (in
the  case of Starsys and SpaceDev), and (iii) subject to certain exceptions, for
the  board  of directors of Starsys to recommend adoption by its shareholders of
the  merger  agreement  and  for the board of directors of SpaceDev to recommend
adoption  by  its  shareholders  of  the  merger  agreement.

     Conditions  to  Closing.  Consummation  of the merger is subject to certain
closing  conditions,  including, among others, shareholder approvals, absence of
governmental  restraints,  effectiveness  of the Form S-4 registration statement
described  below,  and accuracy of representations.  The merger agreement allows
SpaceDev  and  Starsys to terminate the merger agreement upon the occurrence (or
non-occurrence)  of  certain  events.


                                      PAGE 2


     Following  the  effective  time  of  the  merger,  Scott  Tibbitts,  who is
currently  the  chief  executive  officer of Starsys, will become a director and
executive  officer  of  SpaceDev.  It  is  also  anticipated  that Robert Vacek,
president  of  Starsys,  will  remain  president  of  Starsys .

     A  copy  of  the  merger  agreement has been previously filed on a Form 8-K
dated  October  26,  2005  and is included in the registration statement on Form
S-4,  File  No.  333-130244,  filed  on  December 9, 2005.  The amendment to the
merger agreement is attached hereto as Exhibit 2.1 and is incorporated herein by
reference.  The  foregoing  description of the merger agreement and amendment is
qualified  in its entirety by reference to the full text of the merger agreement
and  amendment.

     ADDITIONAL  INFORMATION;  FILING  OF  FORM  S-4

     On December 9, 2005, SpaceDev filed a registration statement on Form S-4 in
connection  with  the  merger.  For  more  information  about  this registration
statement,  please  see  the  discussion  under  Item  8.01  below.

ITEM  8.01.     OTHER  EVENTS

     On  December  9, 2005, SpaceDev filed a registration statement on Form S-4,
File  No.  333-130244,  containing  a  joint  proxy statement and prospectus, in
connection  with  a  merger involving SpaceDev and Starsys Research Corporation.
INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THIS FILING BECAUSE IT CONTAINS
IMPORTANT  INFORMATION  ABOUT  THE  MERGER  TRANSACTION.  Investors and security
holders  may  obtain free copies of this document and other documents filed with
the  SEC  at  the SEC's web site at http://www.sec.gov/.  In addition, investors
and  security holders may obtain free copies of the documents filed with the SEC
by  SpaceDev  by  contacting  SpaceDev  Investor  Relations  at  (858) 375-2026.

     SpaceDev,  Starsys and their directors and executive officers may be deemed
to  be  participants  in  the  solicitation  of proxies from the shareholders of
SpaceDev  and  Starsys  in connection with the merger. Information regarding the
special  interests  of  these  directors  and  executive  officers in the merger
transaction  has  been  included  in  the  joint  proxy  statement/prospectus of
SpaceDev  and  Starsys,  which is a part of the registration statement described
above.

ITEM  9.01.              FINANCIAL  STATEMENTS  AND  EXHIBITS.

     (c)  Exhibits.

2.1  Amendment  No.  1  to Agreement and Plan of Merger and Reorganization dated
     December  7,  2005


                                      PAGE 3


                                   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:  December  13,  2005          By:     /s/  RICHARD  B.  SLANSKY
                                                 -------------------------
                                    Richard  B.  Slansky
                                    President  &  Chief  Financial  Officer