NASA astronauts Suni Williams and Butch Wilmore completed a spacewalk Thursday while awaiting their delayed return to Earth.

Astronaut Suni Williams said she's trying to remember what it's like to walk after being stuck in space for almost seven ...

NASA astronaut Sunita “Suni” Williams, one of the two astronauts on an unintentionally extended stay aboard the International ...

NASA astronauts Butch Wilmore and Suni Williams embarked on a mission that was supposed to last only eight days. However, ...

Astronauts Butch Wilmore and Suni Williams are conducting a spacewalk outside the International Space Station to swab the ...

Breathing New Air Chinese astronauts claim to have created rocket fuel on board the country's Tiangong space station using a ...

So the return of Suni Williams and Butch Wilmore has never been a political story—until this week. And it's a good thing that ...

Starliner co-pilot Sunita Williams is now the world's most experienced female spacewalker, moving up to number four overall.

The capsule that will one day ferry Indian astronauts to space and return them to Earth has been fitted with the key ...

NASA explains some of the experiments being performed on the International Space Station into human health and performance.

one of the two astronauts on an unintentionally extended stay aboard the International Space Station, now holds the record for total spacewalk time by a woman. The record of 62 hours and six ...