NASA/Johnson Space Center // Public Domain Even before getting in an EMU, astronauts spend several hours breathing pure oxygen inside a pressurized air lock to minimize their chances of getting ...

When Nasa astronaut Sunita ‘Suni’ Williams ... that we see is the same that you’d see in someone who is smoking a pack of cigarettes a day,’ explains Scott M. Smith, who is a nutrition ...

Before leaving the space shuttle to perform tasks in space, an astronaut has to spend several hours breathing pure oxygen ... and a parachute pack. The suit, consisting of helmet, communication ...