Best Pics from #YearInSpace
Most expeditions to the space station last four to six months. NASA Astronaut Scott Kelly and his one-year crewmate, Russian cosmonaut Mikhail Kornienko, are providing researchers an unprecedented opportunity to better understand how the human body reacts and adapts to long-duration spaceflight. Here's some favorite snapshots from Kelly's year in space.

Follow him at @StationCDRKelly on Twitter and Instagram and NASA Astronaut Scott Kelly on Facebook for daily images.
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