Before the hatch closed behind them, Expedition 24 Commander Alexander Skvortsov, NASA Flight Engineer Tracy Caldwell Dyson and Russian Flight Engineer Mikhail Kornienko bid farewell to the International Space Station and Expedition 25 Commander Doug Wheelock, and Flight Engineers Fyodor Yurchikhin and Shannon Walker. Skvortsov, Caldwell Dyson and Kornienko boarded a Soyuz spacecraft that'll return them to Earth on Sept. 25 after almost six months in space.
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