Watching the astronauts splash down to Earth after months on the International Space Station, Dianne Durso said she is feeling relieved that her longtime friend — astronaut Suni Williams — is ...

Two long-delayed Starliner astronauts, Barry "Butch" Wilmore and Sunita Williams, returned to Earth aboard a SpaceX Crew Dragon capsule Tuesday, finally closing out a repeatedly extended 286-day ...

NASA astronauts Butch Wilmore and Suni Williams made a successful splashdown on Tuesday evening, nine months after technical problems with their spacecraft upended what was supposed to be a week ...

Soil and rocks returned from the moon’s mysterious far side suggest it may be drier than the side constantly facing Earth, ...

Watch the livestream above as the astronauts of the Starliner mission finally make it back to Earth after more than nine months in orbit. As it did for the undocking, NASA began providing a ...

Without the Earth’s gravitational pull, muscles shrink, bones weaken and bodily fluids shift. Astronauts lose muscle mass rapidly because they do not use their legs to support their weight.

The first four humans to orbit over Earth's north and south poles have safely returned to Earth.

A spoonful of miso, rich with umami and history, made its way around the International Space Station. There, 250 miles above ...

Astronauts Suni Williams and Butch Wilmore made splashdown on Earth on Tuesday after spending nine months in space. A SpaceX crew with replacements for the two astronauts arrived at the ...

Fox News anchor Bill Hemmer will present the first interview with formerly stranded astronauts Butch Wilmore and Suni ...

Two NASA astronauts have returned to Earth after spending nine months stranded in space. Sunita Williams and Barry Wilmore departed the International Space Station (ISS) early on Tuesday morning ...

Astronauts Suni Williams and Butch Wilmore tell NBC News' Tom Costello about the first things they wanted to do upon ...