The space agency said Wednesday it was postponing a spacewalk because of a medical concern with an unidentified astronaut.

On Thursday, a pair of astronauts will venture outside the space station to prepare for the future installation of roll-out ...

Two NASA astronauts were scheduled to complete a six-and-a-half-hour spacewalk on January 8, but the agency has postponed it ...

Five American astronauts have 10 spacewalks under their belt to date: Bob Behnken, Stephen Bowen, Chris Cassidy, Michael ...

In late November, Kelly (D-Ariz.) and five other Congressmen who have served in the military participated in a 90-second ...

Artemis 2, NASA's next astronaut mission to the moon, is gearing up for a launch that could occur as soon as Feb. 6.

Before he found himself a target of the Trump administration as a US senator, Mark Kelly was a NASA astronaut who flew to ...

NASA astronauts are preparing for two spacewalks to complete tasks outside the International Space Station. Here's what we ...

Two NASA astronauts aboard the International Space Station will complete a spacewalk on Thursday morning to make preparations for future technology installation.

A planned spacewalk outside the International Space Station has been postponed due to a “medical concern” with one of the ...

NASA has spent the last few weeks getting ready for two spacewalks at the International Space Station (ISS), its first in ...