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 ...

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

Astronomers have captured direct images of exoplanets in a star system 130 light years away, providing clues on gas giant ...

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

The four laser beams excite sodium atoms in the atmosphere to make for better cosmic observations. The post Incredible photos ...

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

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

"Really, Euclid is not only a dark universe detective, it's also a time machine. We will look back 10 billion years in cosmic ...

The gas giants outside our solar system are not capable of hosting extraterrestrial life, but do offer clues in a lingering ...

Blue Ghost, a moon lander from Firefly Aerospace, captured the first high-definition photos of the lunar sunset from the moon ...