International Space Station

This image provided by NASA March 16, 2014 shows a portion of the Florida Keys taken by Astronaut Rick Mastracchio from the International Space Station. (AP Photo/NASA, Rich Mastracchio)

Rich Mastracchio/Nasa/AP

This image provided by NASA shows a portion of the Florida Keys taken by Astronaut Rick Mastracchio from the International Space Station Read more

Landing of the Soyuz TMA-10M Spacecraft...ZHEZKAZGAN, KAZAHSTAN - MARCH 11: In this handout provided by NASA, Expedition 38 Flight Engineer Sergey Ryazanskiy of the Russian Federal Space Agency, Roscosmos, is helped out of the Soyuz Capsule just minutes after he and Commander Oleg Kotov of the Roscosmos, and, Flight Engineer Mike Hopkins of NASA (not pictured) landed in their Soyuz TMA-10M spacecraft on March 11 near the town of Zhezkazgan, Kazakhstan. Hopkins, Kotov and Ryazanskiy returned to Earth after five and a half months onboard the International Space Station where they served as members of the Expedition 37 and 38 crews.

Bill Ingalls/NASA/Getty

Flight engineer Sergey Ryazanskiy of the Russian Federal Space Agency, Roscosmos, is helped out of the Soyuz Capsule just minutes after he and Commander Oleg Kotov of the Roscosmos landed on Tuesday near the town of Zhezkazgan, Kazakhstan. They returned to Earth after five and a half months on board the International Space Station. Read more

Russian Soyuz-FG rocket with Soyuz TMA-10M spacecraft aboard is transported to a launch pad at the Russian-leased Baikonur cosmodrome in Kazakhstan. Soyuz TMA-10M is planned transport the Expedition 37 crew, including Michael Hopkins of the US together with Russia's Oleg Kotov and Sergei Ryazansky, to the International Space Station (ISS) on September 26.

AFP/Getty Images

Russian Soyuz-FG rocket with Soyuz TMA-10M spacecraft aboard is transported to a launch pad at the Russian-leased Baikonur cosmodrome in Kazakhstan. Soyuz TMA-10M is planned to transport the Expedition 37 crew, including Michael Hopkins of the US together with Russia’s Oleg Kotov and Sergei Ryazansky, to the International Space Station (ISS) on 26 September.

Humanoid communication robot Kirobo talks to Kataoka, project general manager in the Product Planning Group of Toyota Motor Corp, during its unveiling in Tokyo...Humanoid communication robot Kirobo talks to Fuminori Kataoka, project general manager in the Product Planning Group of Toyota Motor Corp, during its unveiling in Tokyo June 26, 2013. Dentsu Inc, Research Center for Advanced Science and Technology, the University of Tokyo, Robo Garage and Toyota announced that their jointly developed robot astronaut, called Kirobo, will be aboard the Kounotori 4 cargo spacecraft scheduled for launch from the Tanegashima Space Center to the International Space Station (ISS) on August 4, 2013, according to the organiser.

Toru Hanai/Reuters

Robot Kirobo talks to Fuminori Kataoka of Toyota during its unveiling in Tokyo. Dentsu, the Research Center for Advanced Science and Technology, the University of Tokyo, Robo Garage and Toyota announced that the jointly developed humanoid astronaut will be aboard the Kounotori 4 cargo spacecraft scheduled for launch from the Tanegashima Space Centre to the International Space Station on August 4 2013.

photo provided by the National Aeronautics and Space Administration NASA on 10 June 2013 shows NASA astronaut Chris Cassidy, an Expedition 36 flight engineer, using a 400mm lens on a digital still camera to photograph a target of opportunity on Earth some 250 miles below him from inside the 'Cupola' of the International Space Station ISS. Cassidy has been aboard the orbital outpost since late March and will continue his stay into September 2013, NASA said. The Cupola, a dome shaped module with windows, was launched and installed as a panoramic control tower for operations outside of the ISS, in 2010.

Nasa/EPA

Nasa astronaut Chris Cassidy, an Expedition 36 flight engineer, uses a 400mm lens on a digital still camera to photograph a target of opportunity on Earth, some 250 miles below him from inside the “Cupola” of the International Space Station. Mr Cassidy has been aboard the orbital outpost since late March and will stay until September, Nasa said. The Cupola, a dome-shaped module with windows, was launched and installed as a panoramic control tower for operations outside of the ISS in 2010.