U.S. astronaut Serena Aunon-Chancellor, right, Russian cosmonaut Sergey Prokopyev, center, and German astronaut Alexander Gerst, members of the main crew to the International Space Station (ISS), wave near a bus from a hotel prior the launch of Soyuz-FG rocket at the Russian leased Baikonur cosmodrome, Kazakhstan, Wednesday, June 6, 2018. (AP Photo/Dmitri Lovetsky)
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