Sergey Ryazanskiy (R), Oleg Kotov (C) and NASA astronaut Mike Hopkins before taking off to the International Space Station (ISS) in September 2013
© EPA/YURI KOCHETKOV Soyuz TMA-10M rocket blast off from Baikonur cosmodrome to take a new crew to the ISS
© EPA/YURI KOCHETKOV Soyuz TMA-10M spacecraft approaching the International Space Station
© EPA/NASA / HANDOUT Russian cosmonaut Oleg Kotov is seen on a giant screen at the Mission Control Center as he holds the Sochi 2014 Olympic Torch outside of the International Space Station ISS
© EPA/YURI KOCHETKOV Sochi Olympic torch being held during a spacewalk
© AP Photo/NASA Mike Hopkins checking out a spacesuit before a spacewalk to replace an ammonia pump that is part of the station's coolant system, Dec. 21 2013
© EPA/NASA HANDOUT Oleg Kotov and Flight Engineer Sergey Ryazanskiy during a 6-hour spacewalk to install cameras in January 2014
© EPA/NASA TV / HANDOUT Cygnus resupply spacecraft packed with 3,000 pounds of equipment, food, Christmas presents and even some ants for an educational project. The delivery was a month late
© AP Photo/NASA, Koichi Wakata Clockwise from top center: Russian cosmonaut Oleg Kotov, commander; Japan Aerospace Exploration Agency astronaut Koichi Wakata, Russian cosmonaut Sergey Ryazanskiy, NASA astronauts Rick Mastracchio and Mike Hopkins, and Russian cosmonaut Mikhail Tyurin, all flight engineers
© EPA/NASA HANDOUT