Rendezvous above Mars. This artist's view of the proposed Mars Sample Return mission shows an orbiting sample container loaded with martian rock and soil specimens lining up for capture by an Earth ... more 
Rendezvous above Mars. This artist's view of the proposed Mars Sample Return mission shows an orbiting sample container loaded with martian rock and soil specimens lining up for capture by an Earth return vehicle. less 
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SPACE.com | Photo By NASA/JPL
Sat, Mar 16, 2013 8:36 AM EDT