NASA Astronaut Twins Set for Space Study

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NASA Astronaut Twins Set for Space Study Posted: 23 Mar 2015 06:05 AM PDT NASA Astronaut Twins Set for Space Study NASA is set to launch a mission to understand the effects of long-haul space travel on humans by comparing a set of twin brothers, Mark and Scott Kelly. Photo: NASA. From: Wall Street Journal Views: 0 0 ratings Time: 01:02 More in News & Politics

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