NASA astronaut Don Pettit captured this stunning long-exposure view of Earth and stars from space at night from the International Space Station.

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

After docking with the International Space Station, the latest crew visiting the orbital outpost made a highly unusual, close encounter of the third kind. Right as they were about to clamber into the ...

A four-member crew, including NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore, left the ISS early Tuesday on ...

New images of the infant universe captured by the Atacama Cosmology Telescope (ACT) are the most precise "baby pictures" to ...

Since those early steps, extravehicular activity has helped provide the solutions to many problems that astronauts face in ...

Being lost in space is a bad idea, for people and for dogs.

NASA astronauts Butch Wilmore's and Suni Williams's eight-day mission lasted nine months. How did they adjust?

After scientists at the South African Sanae IV research station pleaded for help, Rachel Clun speaks to an expert about the ...

Shortly after arriving in space, NASA discovered that various malfunctions had occurred during launch, which it feared could be detrimental to a safe return on the spacecraft. NASA identified ...

Stuck in space no more, NASA astronauts Butch Wilmore and Suni Williams returned to Earth on Tuesday, hitching a different ...