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In this photo released by NASA, Expedition 20 and 21 flight engineer, Nicole Stott, smiles during an interview late Friday, Nov. 27, 2009 at the Operations and Checkout Building at the Kennedy Space Center in Cape Canaveral, Fla. Stott returned to earth on the space shuttle Atlantis earlier in the day following 87 days as a crew member on the international space station. (AP Photo/NASA, Kim Shiflett)