--------------------------------------------------------------------------------

                                  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): DECEMBER 23, 2005 (DECEMBER
                                    20, 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.

1.     Extension  of  Maturity  Date  of  Starsys  Secured  Promissory  Note

     On  December  20,  2005,  pursuant  to  the terms of the Amendment No. 1 to
Secured Promissory Note between SpaceDev and Starsys Research Corporation (which
is  attached  as  Exhibit 10.11 and incorporated herein by reference), we agreed
with Starsys to extend to January 31, 2006 the maturity date of the $1.2 million
loan  we  made to Starsys on September 8, 2005.  The loan to Starsys was for the
purpose  of paying down Starsys' credit facility with Vectra Bank Colorado.  The
loan  accrues  interest  at  8%  per  annum  and was originally set to mature on
December 31, 2005 or earlier in certain circumstances.  No principal or interest
payments are due before maturity.  The maturity date may be accelerated upon the
occurrence  of  certain  events  of  default.  The loan is secured by a security
interest  in all of the assets of Starsys, subject to an intercreditor agreement
with Vectra. This intercreditor agreement precludes SpaceDev from foreclosing on
its loan, absent Vectra's consent, until  May 31, 2006.  Starsys was required to
use  the  proceeds  of  the  loan  to  make  a progress payment to Vectra on the
outstanding  principal balance of loans under the credit facility, which payment
was  due  under  a  forbearance  agreement  with  Vectra.

2.  Entry  into  Employment  Agreements.

     On  December  20, 2005, we entered into an employment agreement and a stock
option agreement with each of Mark N. Sirangelo, Richard B. Slansky and James W.
Benson.  Each employment agreement has an initial term of two years, and will be
automatically  renewed  for  a  third  year unless either party provides written
notice  of  its  intent  not  to  renew.  The employment agreements with Messrs.
Sirangelo, Slansky and Benson are attached to this report as exhibits 10.1, 10.2
and  10.3,  respectively,  and  are incorporated by reference herein.  The stock
option  agreements  with  Messrs.  Sirangelo, Slansky and Benson are attached to
this  report as exhibits 10.4, 10.5 and 10.6, respectively, and are incorporated
by  reference  herein.

     The  employment  agreement  with  Mr. Sirangelo sets forth the terms of his
employment with us as our chief executive officer and vice chairman and provides
for,  among  other  matters:  (1) a base salary of $22,500 per month, subject to
adjustment  up  to  $27,500  per month upon the happening of certain events, (2)
performance-based  cash  bonuses  based on the achievement of specific goals set
forth  in  the agreement and (3) an option to purchase up to 1,900,000 shares of
our  common  stock  under the terms and conditions of the stock option agreement
between  us  and  Mr.  Sirangelo.

     Mr.  Sirangelo  is  a  member  of QS Advisors, LLC and also a member of The
QuanStar  Group,  LLC,  business  advisors  to  our company.  The QuanStar Group
entered  into  an  engagement  agreement  with  us  for which QuanStar is paid a
monthly  fee of $5,000.  In addition, under the agreement, upon the consummation
of  the  merger  with  Starsys  Research  Corporation,  QS Advisors will receive
$200,000  cash  and  250,000  shares  of  our common stock.  This agreement will
terminate  upon  consummation  of  Mr.  Sirangelo's  employment  with  us.

     The  employment  agreement  with  Mr.  Slansky  amends  and  restates   our
employment  agreement  with Mr. Slansky dated February 10, 2003.  This agreement
sets  forth  the  terms of his continued employment with us as our president and
chief  financial  officer  and  provides  for,  among other matters:  (1) a base
salary  of $14,500 per month, subject to adjustment up to $20,000 per month upon
the happening of certain events, (2) performance-based cash bonuses based on the
achievement  of  specific  goals set forth in the agreement and (3) an option to
purchase  up  to  1,400,000  shares  of  our  common  stock  under the terms and
conditions  of  the  stock  option  agreement  between  us  and  Mr.  Slansky.

     The  employment  agreement  with  Mr.  Benson  sets  forth the terms of his
employment with us as our chief technology officer and provides for, among other
matters:  (1)  a  base  salary of $14,000 per month, subject to adjustment up to
$17,000  per  month  upon the happening of certain events, (2) performance-based
cash  bonuses  based  on  the  achievement  of  specific  goals set forth in the
agreement  and  (3)  an  option  to  purchase up to 950,000 shares of our common
stock,  under  the terms and conditions of the stock option agreement between us
and Mr. Benson.  Mr. Benson also received an additional option to purchase up to
150,000  shares  of our common stock in connection with his services as chairman
of  our  company  under  the  terms  and  conditions  of a separate stock option
agreement  between  us  and  Mr.  Benson.  This  stock option agreement with Mr.
Benson  is  attached  to  this  report  as  Exhibit  10.7 and is incorporated by
reference  herein.

                                     PAGE 1

     Under  each  of  the  above  employment  agreements,  the  executive  is an
"at-will"  employee,  which  means that either we or the executive may terminate
employment  at  any  time.  However,  if  the  executive's employment with us is
terminated without cause (as that term is defined in the employment agreements),
that executive will be entitled to a severance payment equal to his then-current
base  salary  per  month  multiplied by the greater of (a) 12 months and (b) the
number  of  months remaining in the term.  If the executive's employment with us
is  terminated  for  good  reason  (as  that  term  is defined in the employment
agreements), that executive will be entitled to a severance payment equal to his
then-current base salary per month multiplied by the lesser of (a) 12 months and
(b)  the  number  of months remaining in the term, but in no event less than six
months.

     The  options  granted to each executive are fully vested and exercisable on
the  date  of  grant,  have  an exercise price of $1.40 per share, which was the
closing  sale  price reported on the OTCBB on the date of grant, and will expire
five  years  after the date of grant.  Some of the shares subject to the options
are  subject  to  sale  restrictions that expire upon the achievement of certain
milestones or four years from the date of grant, whichever comes first.  Subject
to  certain  limitations,  these  options  may  be  exercised  by means of a net
exercise  provision by surrendering shares with a fair market value equal to the
exercise  price  upon  exercise.

3.  Acceleration  of  Options.

     On  December  20, 2005, we approved the accelerated vesting of all unvested
stock  options  held  by  our  officers,  directors,  employees and consultants,
effective  December  20,  2005.  This  accelerated  vesting  affected options to
purchase  up  to  an  aggregate  of 7,787,786 shares of our common stock, all of
which  became  exercisable  immediately.

The  following  table  summarizes  the  accelerated  options:



                                                                                

                                              Aggregate Number of Shares Issuable     Weighted  Average
                                              Upon Accelerated Options                Exercise Price Per Share
                                 
Executive officers and directors as a group   5,795,750                               $1.36
            Non-executive officer employees   1,992,036                               $1.41
                                              -----------------------------------------------------------------
                                      Total   7,787,786                               $1.38
                                              -----------------------------------------------------------------
                                              -----------------------------------------------------------------


     The  primary  purpose  of  the  accelerated  vesting is to eliminate future
stock-based  employee  compensation  expense we would otherwise recognize in our
consolidated  statement  of  operations  with respect to the accelerated options
once  FASB  Statement  No.  123R  (Share-Based  Payment) becomes effective.  The
maximum  future  expense  that  is eliminated is estimated at over $5.0 million.

ITEM  1.02.  TERMINATION  OF  A  MATERIAL  DEFINITIVE  AGREEMENT.

     The  prior employment agreement between SpaceDev and Mr. Slansky terminated
concurrently  with the signing of his new employment agreement discussed in Item
1.01  above.

ITEM  3.02.  UNREGISTERED  SALES  OF  EQUITY  SECURITIES.

     On  December  20, 2005, we granted to Messrs. Sirangelo, Benson and Slansky
options  to  purchase  an aggregate of 4,400,000 shares of our common stock.  To
the  extent  the issuance of these securities is deemed a sale, we relied on the
exemption  from  registration provided by Section 4(2) of Securities Act of 1933
and  Rule  506  of  Regulation  D  thereunder.  See  Item  1.01  above  for more
information regarding these  options, which  were  granted as part of Section 2:
Entry Into Employment Agreements and are included in Section 3:  Acceleration of
Options.

     Pursuant  to an engagement agreement, as amended, with QS Advisors, LLC, we
agreed  to  issue  to  QS  Advisors  250,000 shares of our common stock upon the
closing  of  the  merger with Starsys Research Corporation.  The securities were
offered  and sold without registration under the Securities Act to an accredited
investor  in  reliance  upon  the exemption provided by Rule 506 of Regulation D
thereunder.

ITEM  3.03.  MATERIAL  MODIFICATIONS  TO  RIGHTS  OF  SECURITY  HOLDERS.
     See  Item 5.03 for more information regarding the amendments to our bylaws.


                                     PAGE 1

ITEM  5.02. DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS; ELECTION OF DIRECTORS;
APPOINTMENT  OF  PRINCIPAL  OFFICERS.

     On  December  20,  2005, Mark N. Sirangelo was appointed as chief executive
officer  (to  succeed  James  W.  Benson  in that position), vice chairman and a
director  of our company, commencing December 30, 2005, pursuant to the terms of
his  employment agreement described in Item 1.01.  Mr. Benson, our current chief
executive  officer  will become our chief technology officer and will remain our
chairman.  We  entered into employment agreements and option agreements with Mr.
Sirangelo  and  Mr.  Benson  that  are described under Item 1.01 above.  Certain
relationships  between  SpaceDev  and  QS  Advisors, LLC, an entity in which Mr.
Sirangelo  is  a  member,  are  described  in  Item  1.01  above.

     Mark  N.  Sirangelo  is  currently  a  member of QS Advisors LLC and also a
member  of  The QuanStar Group LLC, business consultants to us.  Mr. Sirangelo's
roles  were  as a managing member from December 2003 and chief executive officer
of  The  QuanStar  Group,  LLC  from  December  2003 until November 2005 and the
managing  member  of  QS  Advisors,  LLC from February 1998 until December 2005.
QuanStar  is  a  strategic and business advisory company. Mr. Sirangelo actively
participated  in  the  development  in  a  number  of  early  stage companies in
aerospace,  technical,  scientific  and  other industries.  His work at QuanStar
also  included  hands-on  involvement with technology commercialization transfer
for university and government laboratories.  From 2001 until 2003, Mr. Sirangelo
also  served as a senior officer of Natexis Bleichroeder, Inc., an international
investment  banking  firm.  Prior  to  Natexis,  he was the principal founder of
Production  Group  International,  Inc., an advanced communications company. Mr.
Sirangelo  served  as  Production  Group  International's  chairman  and   chief
executive  officer  from December 1989 until December 1997.  Mr. Sirangelo has a
bachelor's degree in science, a master's degree in business and juris doctorate,
all  from  Seton  Hall  University.  Mr.  Sirangelo is currently on the board of
directors of two privately held corporations: Advanced Cerametics, Inc. and Adam
Aircraft  Industries,  Inc.  He  is  also a director for the National Center for
Missing  and  Exploited  Children  in  addition  to  serving  as  a director and
treasurer  of  the  International  Center  for  Missing  and Exploited Children.

ITEM  5.03  AMENDMENTS  TO ARTICLES OF INCORPORATION OR BYLAWS; CHANGE IN FISCAL
YEAR.
     Effective on December 20, 2005, our board of directors amended and restated
our  bylaws  as  follows:

     -  To  increase  from 50 days to 70 days the length of time between (1) the
     record  date  fixed in advance by the board of directors for the purpose of
     determining shareholders entitled to notice of or to vote at any meeting of
     shareholders or any adjournment thereof or shareholders entitled to receive
     payment  of  any  dividend,  or  in  order  to  make  a  determination   of
     shareholders  for  any  other proper purpose, and (2) the date on which the
     particular  action  requiring  such  determination of shareholders is to be
     taken;

     -  To  increase from 60 days to 120 days the length of time between (1) the
     date  on which a meeting of shareholders is held and (2) the latest date to
     which,  if  less than a quorum of the outstanding shares are represented at
     the  meeting,  a  majority  of  the shares present may adjourn the meeting;

     - To remove the prohibition on telegraphic proxies and proxies with printed
     or  typed  signatures;

     -  To  add the office of chief financial officer and to clarify the powers,
     duties  and  reporting  lines  of our various officers, including the chief
     executive  officer,  the  president,  the  chief  financial officer and the
     secretary;

     -  To  clarify  certain  procedural  matters regarding the selection, term,
     resignation,  removal  and  related  matters  regarding  officers;

     -  To  clarify  that  any  changes  to officer compensation by the board of
     directors  (or by officers authorized by the board of directors) is subject
     to  the  contract  rights  of  the  affected  officer;

                                     PAGE 3

     - To give the chief executive officer authority to call special meetings of
     shareholders;

     -  To  clarify  that  the number of directors of our company shall be fixed
     from  time  to  time  by  the board of directors, but in no event shall the
     number  of  directors  be  less  than  one;

     -  To  provide  for notice of special meetings of the board of directors by
     facsimile  and e-mail, and to remove the requirement that notice of special
     meetings  of  the board of directors be given at least five days before the
     meeting  if  the  meeting  is  held  outside  Colorado;

     -  To  provide  for  notice  and  quorum  procedures  for meetings of board
     committees;

     - To supplement the list of enumerated items outside the authority of board
     committees,  in  accordance  with  Colorado  law;

     -  To  remove the requirement for the principal office of our company to be
     in  Colorado;

     -  To  change  all references to Pegasus Development Group, Inc. (our prior
     name)  to  SpaceDev,  Inc.;  and

     -  To  make  non-substantive  changes  to  improve  clarity, better conform
     provisions  to  those  of  applicable  Colorado  law,  and improve internal
     consistency.

     Our amended and restated bylaws are attached as Exhibit 3.1 to this report,
and  are  hereby  incorporated  by  reference  into  this  Item  5.03.

ITEM  8.01  OTHER  INFORMATION

     Effective  on December 20, 2005, our board of directors increased from 9 to
10  the number of SpaceDev's authorized directors and appointed Mr. Sirangelo to
fill the vacancy created by the new board seat, as discussed more fully in Items

1.01  and  5.02.

ITEM  9.01  FINANCIAL  STATEMENTS  AND  EXHIBITS

(c)  Exhibits

3.1                   Amended  and  Restated  Bylaws  dated  December  20,  2005
10.1                  Executive  Employment  Agreement dated  December 20, 2005 
                      with Mark N.  Sirangelo
10.2                  Amended  and Restated Executive Employment Agreement dated
                      December 20, 2005  with  Richard  B.  Slansky
10.3                  Executive  Employment  Agreement  dated  December 20, 2005
                      with James W.  Benson
10.4                  Non-Plan  Stock  Option  Agreement dated December 20, 2005
                      with Mark N. Sirangelo
10.5                  Non-Plan Stock Option Agreement  dated   December 20, 2005
                      with Richard B. Slansky
10.6                  Non-Plan  Stock  Option Agreement dated  December 20, 2005
                      with James W. Benson (evidencing an option to purchase  up
                      to  950,000 shares of SpaceDev common stock).
10.7                  Non-Plan  Stock  Option Agreement dated  December 20, 2005
                      with James W. Benson  (evidencing  an option  to  purchase
                      up  to 150,000 shares of SpaceDev common  stock).
10.8                  Inventions  and  Proprietary  Information  Agreement dated
                      December 20, 2005  with  Mark  N.  Sirangelo

                                     PAGE 4


10.9                  Inventions  and  Proprietary  Information  Agreement dated
                      December 20, 2005  with  Richard  B.  Slansky
10.10                 Inventions  and  Proprietary  Information Agreement  dated
                      December 20, 2005  with  James  W.  Benson
10.11                 Amendment  No.  1  to  the  Secured  Promissory  Note with
                      Starsys  Research Corporation  dated  December  20,  2005.


                                     PAGE 5


                                   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  23,  2005                     By:     /s/  RICHARD  B.  SLANSKY
                                                       -------------------------
                                                            Richard  B.  Slansky
                                         President  &  Chief  Financial  Officer


                                     PAGE 6