Expedition 56 Preflight

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket with fellow crewmates Serena Auñón-Chancellor of NASA and Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will launch in their Soyuz MS-09 spacecraft to the International Space Station to being a six month mission. Photo Credit: (NASA/Joel Kowsky)