Expedition 51 Flight Engineer Jack Fischer of NASA performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch in a Soyuz rocket with fellow crew mate, Soyuz Commander Fyodor Yurchikhin of Roscosmos, Thursday, April 20, 2017 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for 1:13pm April 20 Baikonur time, and will carry Yurchikhin and Fischer into orbit to begin their four and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

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Photo credit: © NG Images / Alamy / Afripics
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