This review highlights how the unique stressors of space travel, radiation, microgravity, and circadian disruption impact astronauts’ gut microbiomes, with potential consequences for their mood ...

SpaceX launched India, Poland, and Hungary's first astronauts in more than 40 years, sending them on a chartered flight to the ISS.

Being hired as an astronaut doesn’t guarantee a specific amount of time in space, but Koch has logged enough that she now holds the women’s record for longest single spaceflight.

When astronauts finally reach Mars, they'll face a unique challenge: walking and working in gravity that's only 37% as strong as Earth's. After spending months in the weightlessness of space ...

Tiny, orange glass beads discovered on the moon during the Apollo era may reveal an untold history of lunar volcanism.

A Brazilian social media star is facing backlash from NASA after she claimed she was selected as a future astronaut for private missions to the moon and Mars.

SpaceX officials said the launch was delayed due to an identified leak that will require additional time for repairs.

An astronaut from India is set to launch to the International Space Station on the Ax-4 mission on June 11, marking a first for the nation.

Two veteran astronauts were inducted May 31 into the U.S. Astronaut Hall of Fame — and one of them had to miss the induction ceremony as she's preparing to launch on yet another mission.

NASA astronaut Scott Kelly begins his first-ever spacewalk outside the International Space Station on Oct. 28, 2015. Credit: Kjell Lindgren / NASA Before NASA shot astronaut Scott Kelly into orbit ...

A Belgian sculptor credited with the "Fallen Astronaut" figurine left on the surface of the moon in 1971 has now fallen himself. Paul Van Hoeydonck died on May 3, at his home in Antwerp.

NASA's oldest serving astronaut has landed safely back on Earth following a seven-month orbital mission.