[Cape Canaveral, April 20. Image via AP]
Space shuttle Discovery astronauts, from left, Japan Aerospace Exploration Agency astronaut Naoko Yamazaki, mission specialist Stephanie Wilson and mission specialist Dorothy Metcalf-Lindenburger, after landing at the Kennedy Space Center in Cape Canaveral, Fla., Tuesday, April 20, 2010.(AP Photo/John Raoux)
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