Expedition 55 Preflight

Expedition 55 flight engineer Drew Feustel of NASA, top, flight engineer Ricky Arnold of NASA, middle, and Soyuz Commander Oleg Artemyev of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-08 spacecraft for launch, Wednesday, March 21, 2018 at the Baikonur Cosmodrome in Kazakhstan. Feustel, Arnold, and Artemyev will spend the next five months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)