On 27 March, Nasa astronaut Scott Kelly (left) and Roscosmos cosmonaut Mikhail Kornienko (right) will undertake the first year-long stay aboard the International Space Station, to prepare astronauts for long-duration missions to Mars
On 27 March, Nasa astronaut Scott Kelly (left) and Roscosmos cosmonaut Mikhail Kornienko (right) will undertake the first year-long stay aboard the International Space Station, to prepare astronauts for long-duration missions to Mars
