Sunita Williams's enthusiasm for her work is evident as she continues to contribute to groundbreaking advancements in space ...

This claim was, in fact, true. McCandless was, indeed, the first astronaut to perform an untethered spacewalk on Feb. 7, 1984 ...

The space agency’s chief health and medical officer refutes claims that Suni Williams, who is on the unexpectedly extended ...

Concerns for the health of the NASA astronauts stranded on the International Space Station have grown after recent images ...

Astronauts Matthew Dominick, Michael Barratt and Jeanette Epps publicly discussed their spaceflight for the first time since ...

NASA is assuring the public that a Massachusetts astronaut is in good health after recent photos of the woman sparked ...

"In 65 years of human spaceflight, we've never had to bring somebody back for a medical reason so far," he added. "That's a ...

NASA doctors are frantically trying to help stranded astronaut Sunita Williams pack on the kilograms after she has suffered a “significant” weight loss since arriving at the International Space ...

Pictures released by the space agency of one of the astronauts who has been stuck on the International Space Station for six ...