Space changes you. It strengthens some muscles, weakens others, shifts fluids within your body, and realigns your sense of balance. NASA's Human Research Program works to understand—and sometimes even ...

Indian American astronaut Sunita Williams steps away from NASA after 27 years of service and record-setting missions in space.

Longtime NASA astronaut Don Pettit, who has ventured to space four times, returned to Earth on Saturday night from the International Space Station. Pettit, who turned 70 on Sunday, landed at 9:20 p.m.

"The great thing that I found when I began to live my life as an astronaut was that the world seemed so different. It was as if I was viewing my environment with a fresh pair of eyes." - John Barlow, ...

An Inside Look Into the Private Life of Late Astronaut Sally Ride, as Told by Her Partner Tam (Exclusive Clip) originally appeared on Parade. Tam O’Shaughnessy is sharing the true story of her 27-year ...

Sally Ride was the first American woman to go to space back in 1983. And for a while, it seemed like she was the most famous person on Earth and in space. She dominated headlines. She was all over TV.

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 ...

Speaking on a podcast, Williams said prolonged exposure to microgravity can have lasting effects on the body, some of which continue to concern astronauts and scientists.

Tam O’Shaughnessy is sharing the true story of her 27-year relationship with iconic astronaut Sally Ride. In National Geographic's new documentary Sally, O’Shaughnessy, 73, gives insight into the pair ...