Expedition 46 prime crew members; Tim Peake of ESA (European Space Agency), far left, Yuri Malenchenko of the Russian Federal Space Agency (Roscosmos), second from left, and Tim Kopra of NASA, third from left, are seen with backup crew members Kathleen Rubins of NASA, third from right, Anatoli Ivanishin of Roscosmos, second from right, and Takuya Onishi, of the Japan Aerospace Exploration Agency (JAXA), right, during a press conference held at the Cosmonaut Hotel, Monday, Dec. 14, 2015 in Baikonur, Kazakhstan. Launch of the Soyuz is scheduled for Dec. 15 and will send Malenchenko, Kopra, and Peake to the International Space Station for a six-month stay.