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 ...

Crew-9 launched with Hague and Gorbunov and two empty seats for Williams and Wilmore on the return journey, aboard SpaceX's ...

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 ...

Unlike the typical blue-and-green depiction of Earth, this photo shows the planet in a mossy green hue, framed by a thin ...

Astronaut Edgar Dean Mitchell's experience in space led him to found the Institute of Noetic Sciences, which explores the science behind psychic and spiritual phenomena.