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

On March 29, a partial solar eclipse will cause a dark shadow over eastern North America — and weather satellites will pick ...

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

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

NASA has shared the first images of Butch Wilmore and Suni Williams following the end of their epic nine-month space mission ...

Satellite images taken more than three decades apart show the disappearance of Iceland's Okjökull, the first glacier to be ...

NASA astronauts Butch Wilmore and Suni Williams have returned to Earth after nine months in space, and the before-and-after ...

Nine months after being stranded aboard the International Space Station, Suni Williams and Butch Wilmore are finally back ...

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

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

NASA and SpaceX made another attempt on Friday to send a crew up to the International Space Station (ISS) and begin the ...