NASA's next mission to Mars rescheduled to 2011

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Washington, Dec 5 : NASA's next mission to the Red Planet, known as Mars Science Laboratory, has been rescheduled to launch two years later than previously planned, in the fall of 2011.

The mission will send a next-generation rover with unprecedented research tools to study the early environmental history of Mars.

According to NASA officials, a launch date of October 2009 is no longer feasible because of 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.

So, the next launch opportunity after 2009 is in 2011.

"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, California.

"The right and smart course now for a successful mission is to launch in 2011," he added.

"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," he added.

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.

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.

ANI

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