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Fri, Dec 05, 2008

NASA Bumps Mars Science Lab Launch Until 2011

Two-Year Delay Blamed On "Testing And Hardware Challenges"

NASA's much-touted Mars Science Laboratory will spend more time on Earth than originally planned. The space agency announced Thursday the MSL will launch two years later than previously planned, in the fall of 2011. The original target launch date of October 2009 "no longer is feasible" due to "testing and hardware challenges that must be addressed to ensure mission success."

The window for a 2009 launch ends in late October. The relative positions of Earth and Mars are favorable for flights to Mars only a few weeks every two years. The next launch opportunity after 2009 is in 2011.

"We will not lessen our standards for testing the mission's complex flight systems, so we are choosing the more responsible option of changing the launch date," said Doug McCuistion, director of the Mars Exploration Program at NASA Headquarters in Washington. "Up to this point, efforts have focused on launching next year, both to begin the exciting science and because the delay will increase taxpayers' investment in the mission. However, we've reached the point where we can not condense the schedule further without compromising vital testing."

NASA cleared the Mars Science Laboratory for a 2009 launch earlier this year... but the team recently completed a second assessment of the progress it has made over the past three months, and those findings convinced NASA the launch date needed to be changed, to incorporate needed design changes with "key parts of the spacecraft," according to the space agency.

"Despite exhaustive work in multiple shifts by a dedicated team, the progress in recent weeks has not come fast enough on solving technical challenges and pulling hardware together," said Charles Elachi, director of NASA's Jet Propulsion Laboratory in Pasadena, CA. "The right and smart course now for a successful mission is to launch in 2011."

The advanced rover is one of the most technologically challenging interplanetary missions ever designed. It will use new technologies to adjust its flight while descending through the Martian atmosphere, and to set the rover on the surface by lowering it on a tether from a hovering descent stage. Advanced research instruments make up a science payload 10 times the mass of instruments on NASA's Spirit and Opportunity Mars rovers.

Powered by a small nuclear reactor, the Mars Science Laboratory is engineered to drive longer distances over rougher terrain than previous rovers. It will employ a new surface propulsion system.

The mission will explore a Mars site where images taken by NASA's orbiting spacecraft indicate there were wet conditions in the past. Four candidate landing sites are under consideration. The rover will check for evidence of whether ancient Mars environments had conditions favorable for supporting microbial life and preserving evidence of that life if it existed there.

FMI: http://mars.jpl.nasa.gov/msl

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