Expedition 52 flight engineer Paolo Nespoli of ESA (European Space Agency) performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket with fellow cremates flight engineer Randy Bresnik of NASA and flight engineer Sergei Ryazanskiy of Roscosmos, Friday, July 28, 2017 in Baikonur, Kazakhstan. Ryazanskiy, Bresnik, and Nespoli will launch in their Soyuz MS-05 to the International Space Station to being a four and a half month mission. Photo Credit: (NASA/Joel Kowsky)

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