Astronauts perform so many out-of-this-world experiments on the International Space Station (ISS). They use a specially-built ...

Astronauts on the International Space Station age slightly slower than the rest of us on Earth due to time-dilation effects.

The aerospace company just completed a crucial test on Earth of technology to generate oxygen on the moon. Sierra Space is ...

A pair of NASA astronauts on board the International Space Station (ISS) expressed their excitement to vote in the upcoming ...

NASA astronauts Barry Wilmore and Sunita Williams — who are stuck in space due to mechanical issues with their shuttle — ...

Astronauts on the International Space Station, which has been in orbit for decades, have collected a stunning array of images ...

A FOIA request was launched on behalf of a good government watchdog whose executive director suggested the decision to leave ...

The commander of the daring space voyage that included the first-ever spacewalk by private astronauts described opening the ...

After their spacecraft landed on Earth without them, the Starliner crew gave the world an update and said they are doing just ...

Their Starliner capsule marked the first Boeing spaceflight with astronauts. It endured a series of thruster failures and ...

Suni Williams and Butch Wilmore of NASA spoke from the International Space Station for the first time since their Boeing ...

The SpaceX capsule, whose crew was led by the billionaire Jared Isaacman, splashed down near the Gulf of Mexico early Sunday.