Expedition 56 Preflight

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency), top, flight engineer Serena Auñón-Chancellor of NASA, middle, and Soyuz Commander Sergey Prokopyev of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-09 spacecraft for launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Gerst, Auñón-Chancellor, and Prokopyev will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)