Curiosity rover explores Mars

Associated Press
This image taken by the NASA rover Curiosity shows sediment at the bottom of an ancient streambed on Mars. Fresh analysis by Curiosity reveals hundreds of rounded pebbles in its Gale Crater landing site - a sign that a liquid once flowed there. (AP Photo/NASA)

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All the latest images of life on the Red Planet, beamed back by NASA's Mars rover, Curiosity.

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