Four astronauts are about to board a rocket to leave the planet. Update for 7:50 pm ET: SpaceX called off its planned launch ...

NASA astronauts Sunita Williams and Butch Wilmore are returning to Earth after a prolonged mission on the ISS, initially ...

NASA astronauts Butch Wilmore and Sunita Williams are set to return to Earth after a nine-month mission on the ISS due to ...

In his final days aboard the space station in a mission that’s lasted six months, American astronaut Don Pettit has shared ...

Astronauts in space experience significant muscle atrophy and bone density loss due to the absence of Earth's gravity.

Dressed in re-entry suits, boots and helmets, the astronauts were seen earlier on NASA's live footage laughing, hugging and posing for photos with their colleagues from the station shortly before they ...

Check out images from the SpaceX Crew-10 mission that launched from Kennedy Space Center on Friday sending a replacement crew ...

Update for 7:50 pm ET: SpaceX called off its planned launch of the Crew-10 astronaut mission for NASA due to a hydraulics issue with a clamp device on ground equipment securing the crew's Falcon 9 ...

Pettit has shared a number of photos featuring star trails during ... At 69, Pettit is NASA’s oldest serving astronaut, and across his four orbital missions over the years, he’s become an ...

A SpaceX capsule delivered four astronauts to the International Space Station early Sunday in a NASA crew-swap mission that ...