People on Earth who receive an average of 2 mSv per year from background radiation ... In severe cases this can be fatal, but ...

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

They’re temporary extraterrestrials about to phone home. The NASA astronauts already trapped in space for months are due to call Earth on Friday afternoon to discuss their ongoing plight that ...

7, about three months after it launched on June 5 with the two astronauts onboard Abigail Adams is a Human Interest Writer and Reporter for PEOPLE. She has been working in journalism for seven years.

That means astronauts on the International Space Station ... that her Earth-bound sister has aged over a decade. Of course, no one has performed that experiment in real life, but there's evidence ...

The two Starliner astronauts said Friday they had no regrets about NASA's decision to extend their mission and to bring their spacecraft back to Earth without them, saying they had turned the page ...

This mission, titled NS-26, will launch no earlier than 7 a.m ... Digging into NASA's astronaut qualifications, he realized his medical background qualified him to apply. He did, and then he ...

(CNN) — As Artemis II — NASA’s mission that will send four astronauts to circumnavigate the moon as soon as next year — draws closer, a new study is revealing how well its Orion spacecraft ...

In June two American astronauts left Earth expecting to spend eight days on the International Space Station (ISS). But after fears that their Boeing Starliner spacecraft was unsafe to fly back on ...

But after the space agency deemed the capsule too risky to take them home — and decided Wilmore and Williams would stay in space until 2025 — the two veteran astronauts will now be floating ...

In June two American astronauts left Earth expecting to spend eight days on the International Space Station (ISS). But after fears that their Boeing Starliner spacecraft was unsafe to fly back on, ...