SpaceDev Devices Successfully Land on Mars

POWAY, CA -- (MARKET WIRE) -- 05/27/08 -- SpaceDev, Inc. (OTCBB: SPDV) announced today that it provided a wide array of hardware and instruments for the Phoenix Lander that successfully landed on Mars' north arctic plane Sunday, May 25th at 4:53 pm PDT. SpaceDev mechanical systems on the spacecraft included 16 devices supporting the Microscopy, Electrochemistry and Conductivity Analyzer (MECA) instrument, eight actuators on the Thermal Evolved Gas Analyzer (TEGA) instrument, two actuators deploying the solar arrays, two actuators pointing the Stereo Surface Imager (SSI) camera, and three actuators on the robotic arm. All in all, more than 30 SpaceDev devices are now on the surface of Mars supporting the Phoenix spacecraft.

"We congratulate the Phoenix team for a challenging job well done. It is an extraordinary thing to land a spacecraft on another planet," said Mark N. Sirangelo, SpaceDev's Chairman and CEO. "We are honored to play an integral part of this important program. This is the 11th trip to the Red Planet where our products played an important role in the mission and we look forward to a successful effort to search for water and other organic materials on Mars."

About SpaceDev

SpaceDev, Inc. is a space technology/aerospace company that creates and sells affordable and innovative space products and mission solutions. For more information, visit www.spacedev.com.

This news release may contain "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve risks that are difficult to predict, are based on the Company's current expectations, and are not guarantees of performance. The Company's actual results could differ materially from its current expectations. Factors that could contribute to such differences include, but are not limited to, risks associated with the Company's ability to effectively manage program, technical, schedule, cost, or customer changes, or cancellation of orders, or obtain additional financing, if needed. The Company also references other factors described in periodic reports filed with the SEC, including its current Annual Report on Form 10-KSB and subsequent Quarterly Reports on Form 10-QSB. These forward-looking statements speak only as of the date of this release. SpaceDev does not intend to update these forward-looking statements.

Image Available: http://www2.marketwire.com/mw/frame_mw?attachid=767128