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In this March 15, 2011 photo provided by NASA, astronaut Scott Kelly, Expedition 26 commander, right, poses with Robonaut 2, the dexterous humanoid astronaut helper, in the Destiny laboratory of the International Space Station. (AP Photo/NASA)

In this March 15, 2011 photo provided by NASA, astronaut Scott Kelly, Expedition 26 commander, right, poses with Robonaut 2, the dexterous humanoid astronaut helper, in the Destiny laboratory of the International Space Station. (AP Photo/NASA)

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