Sunita "Suni" Williams had an unexpectedly long stay at the International Space Station after her capsule malfunctioned.

The Earth and a starry night appear to merge into one strange and otherworldly sci-fi trip in this mind-bending photo ...

The Fram2 crew will be the first people to observe the polar regions from low Earth orbit, and they'll work on experiments ...

NASA astronauts Suni Williams, left, and Butch Wilmore stand together for a photo enroute to the launch pad at Space Launch ...

The final act of the Blue Ghost lander's busy two weeks on the moon was to send back sunset shots featuring Earth and Venus.

NASA astronauts Barry Wilmore and Sunita Williams return after 9 months in space, revealing shocking physical transformations ...

Four astronauts were all smiles Tuesday evening when they splashed down off the Florida coast on a SpaceX Dragon capsule. See ...

Dolphins surrounded the SpaceX capsule after it landed in the ocean on the NASA astronauts' successful journey home after ...

The NASA astronauts splashed down on Tuesday in a SpaceX capsule after problems with a Boeing vehicle set in motion a ...