Expedition 56 crewmember Alexander Gerst of the European Space Agency signs in for the final day of Soyuz qualification exams.

AirshowAt the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 56 crewmember Alexander Gerst of the European Space Agency signs in for the final day of Soyuz qualification exams May 11 as his crewmate, Sergey Prokopyev of Roscosmos (right) looks on. Gerst, Prokopyev and Serena Aunon-Chancellor of NASA will launch June 6 on the Soyuz MS-09 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station...NASA/Elizabeth Weissinger.