SpaceDev (OTCBB: SPDV – News) expects to release its financial results for the fourth quarter and full year 2004 on Tuesday, March 29, 2005 before the markets open, and will host a conference call later that morning at 11:00 a.m. EST to discuss the release.

SpaceDev invites all those interested in hearing management’s discussion to join the call by dialing 877-407-9205. International participants may access the call by dialing 201-689-8054. Participants may also access a live webcast of the conference call through the investor relations section of SpaceDev’s web site, www.spacedev.com. The replay will be available for 90 days.

About SpaceDev

SpaceDev (OTCBB: SPDV – News) creates and sells affordable and innovative space products and solutions to government and commercial enterprises. SpaceDev’s innovations include the design, manufacture, marketing and operation of sophisticated micro- and nano- satellites, hybrid rocket-based orbital Maneuvering and orbital Transfer Vehicles as well as sub-orbital and orbital hybrid rocket-based propulsion systems for safe human space flight. For more information, visit www.spacedev.com.

This news release may contain forward-looking statements. Forward-looking statements are based on the Company’s current expectations. Actual results may differ materially from current expectations. Readers are cautioned not to put undue reliance on forward-looking statements contained in this release and to read it in conjunction with the Company’s annual report on Form 10-KSB, including the consolidated financial statements filed therewith.

Contact:

The Investor Relations Group

Kathryn McNeil / John Nesbett, 212-825-3210