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Mars rovers roll on after five years

disclaimer: image is for illustration purposes only
by Staff Writers
 Pasadena, Calif. (UPI) Jan 3, 2008
The unmanned rovers Spirit and Opportunity are showing serious signs of wear after an astounding five years roaming Mars, U.S. space agency officials say.

Scientists initially thought the remote-controlled machines would last only three months in Mars' freezing climate, said John Callas, rover project manager at the National Aeronautics and Space Administration's Jet Propulsion laboratory in Pasadena, Calif.

"These rovers are incredibly resilient considering the extreme environment the hardware experiences every day," Callas said, noting information sent by the rovers have proved water existed on Mars billions of years ago.

No one knows how long the rovers will continue to operate. Spirit can only drive backward because of a stuck wheel, while Opportunity's robotic arm misfires because of a broken electrical wire, the BBC reported Saturday.

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MARSDAILY
Spirit Clocks Up Five Years Exploring Mars
 Pasadena CA (JPL) Jan 03, 2009
 NASA rovers Spirit and Opportunity may still have big achievements ahead as they approach the fifth anniversaries of their memorable landings on Mars.








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