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Wednesday, July 9, 2008 |
Photo: Shuttle's Human Experiments Pave Way for Moon, Mars VoyagesScience experiments started during the 13-day mission will help better prepare astronauts to stay healthy during long-distance space flights to the moon and Mars. Photograph by John Raoux/AP Photo
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAYPhoto and Headline Widget
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