Astronauts Suni Williams and Butch Wilmore are back on Earth - but what has nine months in space done to them?

“In zero G, a lot of things happen to the human body, and none of those are particularly good,” says John Connolly, the lead engineer on NASA’s Mars Study Capability team. Gravity ...

The former NASA astronaut said that skipping exercise in space can cost 1 per cent of body mass every month and can ...

But once we leave the planet, we experience what is known as zero gravity ... Human sleep schedules tend to figuratively and literally revolve around the sun. When the sun is in the sky, our body ...

Narrator: Without gravity working on your body, your bones and muscles start to break down, too. In fact, bone density drops by over 1% per month. By comparison, the rate of bone loss for elderly ...

With the two NASA astronauts finally coming home after nine months in space, Nights speaks to Dr Brian Russell, a former NASA researcher and expert on human physical performance in space.

Blue Abyss and NovaCorp Aerospace have signed an agreement which is set to launch zero-gravity live sport and entertainment into the stratosphere.

However, the human body evolved to function in the gravity ... "You're floating around the space station in this wonderful zero-gravity environment." Imagine spending weeks lounging around in ...