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2018 TIME 100 | TIME Play all

TIME's 100 most influential pioneers, leaders, titans, artists and icons of 2018. Learn More: http://po.st/2018TIME100

A Year In Space | TIME Play all

On March 27, Scott Kelly began a historic year in space. TIME will follow Kelly, his twin brother and fellow astronaut Mark Kelly and their families as they work together to test the boundaries of long-term space travel.