William Shatner, who became the oldest person to travel to space at age 90, is offering encouragement and practical advice to Gayle King and the all-female crew launching April 14.

According to Nasa, for every month in space, astronauts' weight-bearing bones become roughly one per cent less dense if they ...

According to the Baylor College of Medicine's Center for Space Medicine, long durations in space can change a person's eyes, including globe flattening, optic disc edema, and vision changes. The Space ...

After nine months in space, two returning NASA astronauts will face an adjustment period where their bodies get used to ...

On Earth, gravity pulls blood toward the lower body, but in space, fluids shift upward, causing astronauts to have puffy ...

One weekend in 1939, shortly before the outbreak of World War II, visitors to London's Science Museum might have come across a dozen young men peering through a contrivance of rotating mirrors at ...

Neil Melville would love to explain what weightlessness feels like, but he can’t. It’s a surprising admission from a man who’s experienced zero gravity more than 1,000 times in his role as a ...

Everything on Earth is subject to the force of gravity. The effects of that force vary greatly: Sometimes they are very minor and go unnoticed by man, while at other times their impact is fundamental.