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Astronaut Scott Kelly set to return to Earth: A look at his year in space

04:30

NASA is planning a very big homecoming celebration in Houston as Scott Kelly prepares to return to Earth Tuesday night. He’s spent 340 days on the International Space Station, a record for an American astronaut, reports NBC’s Tom Costello. In the Orange Room, TODAY’s Carson Daly recaps how the world was able to follow Kelly’s year in space via social media.