Expedition 55 prime crew members Ricky Arnold of NASA, left, Oleg Artemyev of Roscosmos, second from left, and Drew Feustel of NASA, center, pose for a picture with backup crew members Alexey Ovchinin of Roscosmos, second from right, and Nick Hague of NASA, right, at the conclusion of a press conference, Tuesday, March 20, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Arnold, Artemyev, and Feustel are scheduled to launch to the International Space Station aboard the Soyuz MS-08 spacecraft on Wednesday, March, 21. - Stock Image
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