Astronauts who spend long periods in space push human endurance and science to new levels. Often returning to space multiple ...

Three NASA astronauts whose prolonged space mission ended with a trip to the hospital last month won't say which one of them ...

Three NASA astronauts whose prolonged space station mission ended with a trip to the hospital last month declined to say ...

A group of NASA astronauts have remained secretive about why they were taken to hospital after their prolonged space station ...

"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 ...

In a video released Monday by NASA, stranded astronaut Sunita Williams, 59, offered a surprising reason for her weight loss ...

Suni Williams and Butch Wilmore only expected to be in space for about a week. But, more than 150 days later, the two NASA ...

In orbit, the astronauts aborted two spacewalks, both under unusual circumstances. Then, on October 25, one of the astronauts ...

Stranded astronaut Sunita Williams said the growing concerns about her health were nothing but “rumors” — as she attributed ...

Jonny Kim—a former Navy SEAL and ER doctor—is now a NASA astronaut who will soon launch to the International Space Station as ...

Welsh’s ebook is called “ Space Radiation: Astrophysical origins, radiobiological effects and implications for space ...

Amid public concern, NASA said the Starliner astronauts and the other five spacefarers living in orbit "undergo routine ...