Such "countdown demonstration tests" have traditionally taken place shortly before launch with the rocket and crew ship ...

NASA astronaut Scott Kelly begins his first-ever spacewalk outside the International Space Station on Oct. 28, 2015. Before NASA shot astronaut Scott Kelly into orbit for the first time in 1999, he ...

NASA's Artemis program aims to return humans to the moon, laying the groundwork for deeper lunar exploration and possible colonization. Named after the twin sister of Apollo in Greek mythology, ...

Astronauts visiting the International Space Station (ISS) typically spend about six months there before returning to Earth, ...

The space agency aims to send four astronauts around the moon early next year—and bring them safely home through intense heat ...

Forget all the scientific advances, the most popular question asked of astronauts is much more primal: How do you use the restroom? Suction is needed to counteract the lack of gravity, and it's not ...