Friends of NASA astronauts who have been stranded at the International Space Station spoke with ABC13 about their ...

S trange as it may sound, where the astronauts sat (or "sat" – the crew actually stood) in the Apollo Lunar Module may have profoundly impacted the way the experience of walking on the Moon ...

Without the need to support body weight, muscles weaken over time, making it difficult for astronauts to walk properly upon returning to Earth. The heart doesn't have to work as hard to pump blood ...

The US astronauts stranded on the International Space Station are home at last — more than nine months after their days-long ...

Human beings have evolved to become "perfectly adapted to life on Earth", said Sky News. So, spending time in space ...

They are getting only a small fraction of the exercise we all get from just walking in gravity." Increased risk of cancer due to the heightened levels of radiation that astronauts are exposed to ...

and Butch Wilmore stand together for a photo enroute to the launch pad at Space Launch Complex Another factor that explains why astronauts find it difficult to walk, is fluid redistribution.