If you're a space buff but haven't already seen the 1995 film "Apollo 13," it's worth the watch. It recreates the near-disaster mission marked by an oxygen tank explosion and emergency ocean-landing ...

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 ...

NASA astronaut Nicole Stott reveals whether sex in space is physically possible and what really happens when gravity isn’t ...

This weekend, on Nov. 2 the ISS celebrates 25 years of continuous human habitation in space. NASA astronaut Sunita Williams exercises on the International Space Station. NASA astronaut Bill Shepherd ...

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, ...

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 ...

Sunita "Suni" Williams, 59, is opening up to PEOPLE about her tentative plans to retire and what she missed the most while in space NASA astronaut Sunita Williams is looking back on her nine months in ...