Life on the International Space Station isn't always easy. There's not a lot of room, no showers, and no laundry. Photos show ...

Billionaires make it seem that we have all the tech we need to settle on the moon and Mars. But the hard part of living in space is adapting the human body to extraterrestrial conditions. Business ...

There are four Americans currently living in space, and each has had the opportunity to add their voice to the more than 160 ...

Russell “Rusty” Schweickart was among the first astronauts in space and the first to pilot the lunar module during the Apollo 9 mission in March 1969 that laid the foundation for humans to walk on the ...

The microgravity conditions of the International Space Station (ISS) mean that its human inhabitants are barred from eating crumbly foods as the particles could float away and clog up air vents and ...

Five years after their space jaunts, the astronauts appear to be in good cardiovascular health. Living in microgravity changes the human body — and usually for the worse. Bone density decreases, ...

Space changes you. It strengthens some muscles, weakens others, shifts fluids within your body, and realigns your sense of ...

NASA astronaut Sunita Williams opens up to PEOPLE about spending 9 months in space, what she missed the most and her tentative plans to retire.