NASA astronauts Nick Hague, Suni Williams, Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov land in a SpaceX Dragon ...

After an unplanned nine-month stay in space, astronauts Barry Wilmore and Sunita Williams have returned to Earth. Here's what ...

The human body was not built for spaceflight, with its microgravity conditions, exposure to high-energy radiation and other ...

"We’re a good 15 years away from going to Mars, not five years as Elon Musk alludes to," former NASA astronaut José Hernández ...

There are a couple potential explanations for distinctive markings found on a Martian rock, but new evidence suggests they ...

Butch Wilmore and Suni Williams left the International Space Station in a SpaceX capsule early Tuesday, checking out with the cosmonaut and astronaut.

Massachusetts native Suni Williams is among NASA’s two stuck astronauts headed back to Earth with SpaceX on Tuesday -- a ...

What happened to NASA astronaut Scott Kelly after spending a year in space while twin brother Mark, also an astronaut, ...

Butch Wilmore and Suni Williams left the International Space Station in a SpaceX capsule early Tuesday, checking out with the cosmonaut and astronaut.

Bone and muscle deterioration, vision impairment — even changes in DNA. How does extended time in orbit impact the human body ...

"As soon as we can get it going, we would want to start having some type of presence on the moon sustainably," she told Fortune.