NASA's Mars Odyssey spacecraft passes above Mars' south pole in this artist's concept illustration. The spacecraft has been orbiting Mars since October 24, 2001. The spacecraft will serve as a vital ... more 
NASA's Mars Odyssey spacecraft passes above Mars' south pole in this artist's concept illustration. The spacecraft has been orbiting Mars since October 24, 2001. The spacecraft will serve as a vital relay for NASA's Mars rover Curiosity's landi less 
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SPACE.com | Photo By NASA/JPL-Caltech
Sun, Aug 5, 2012 12:48 AM EDT