At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 46-47 backup crewmember Kate Rubins of NASA (left) signs a ceremonial book at the Gagarin Museum Nov. 23 as crewmate Anatoly Ivanishin looks on. The prime crew, Tim Peake of the European Space Agency, Yuri Malenchenko of the Russian Federal Space Agency (Roscosmos) and Tim Kopra of NASA will launch on Dec. 15 on the Soyuz TMA-19M spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station.