Russian cosmonaut Sergey Volkov of Roscosmos is carried into a medical tent after he and Expedition 46 Commander Scott Kelly of NASA and cosmonaut Mikhail Kornienko landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, March 2, 2016 (Kazakh time). Kelly and Kornienko completed an International Space Station record year-long mission to collect valuable data on the effect of long duration weightlessness on the human body that will be used to formulate a human mission to Mars. Volkov returned after spending six months on the station.