SpaceX astronaut Victor Glover during training. Courtesy: Nasa
Astronaut Steve Swanson floats in the waters of the Neutral Buoyancy Laboratory, which simulates a weightless motion experienced in space. Courtesy: Nasa
Astronaut Thomas Pesquet trains for space travel in the Neutral Buoyancy Laboratory in Houston. Courtesy: Nasa
Astronaut Thomas Pesquet prepares for life aboard the International Space Station during an intensive training programme in Houston. Courtesy: Nasa
Astronaut Thomas Pesquet undergoes training ahead of a planned journey to the International Space Station next year. Courtesy: AFP
SpaceX team members Thomas Pesquet (R) and Matthias Maurer during Emergency Vehicle Familiarization in Houston, Texas. Courtesy: AFP
Nasa astronaut Scott Kelly inside a Soyuz simulator at Gagarin Cosmonaut Training Centre in Russia. Courtesy: Nasa
Nasa astronaut Scott Tingle and Norishige Kanai (background) of the Japan Aerospace Exploration Agency (JAXA) practice at the Russian leased Kazakh Baikonur cosmodrome. Courtesy: AFP
SpaceX astronaut Victor Glover during training. Courtesy: Nasa
Astronaut Steve Swanson floats in the waters of the Neutral Buoyancy Laboratory, which simulates a weightless motion experienced in space. Courtesy: Nasa
Astronaut Thomas Pesquet trains for space travel in the Neutral Buoyancy Laboratory in Houston. Courtesy: Nasa
Astronaut Thomas Pesquet prepares for life aboard the International Space Station during an intensive training programme in Houston. Courtesy: Nasa
Astronaut Thomas Pesquet undergoes training ahead of a planned journey to the International Space Station next year. Courtesy: AFP
SpaceX team members Thomas Pesquet (R) and Matthias Maurer during Emergency Vehicle Familiarization in Houston, Texas. Courtesy: AFP
Nasa astronaut Scott Kelly inside a Soyuz simulator at Gagarin Cosmonaut Training Centre in Russia. Courtesy: Nasa
Nasa astronaut Scott Tingle and Norishige Kanai (background) of the Japan Aerospace Exploration Agency (JAXA) practice at the Russian leased Kazakh Baikonur cosmodrome. Courtesy: AFP
SpaceX astronaut Victor Glover during training. Courtesy: Nasa