Photos and videos of astronauts on the ISS show them floating around, but saying there's zero gravity isn't fully accurate.

NASA astronaut Nicole Stott reveals whether sex in space is physically possible and what really happens when gravity isn’t ...

The International Space Station is marking 25 years of nonstop human presence in orbit. Nearly 300 people have lived aboard ...

The low-gravity of outer space can be unintuitive, and normal bodily functions that we take for granted here on Earth don't ...

SANTA MONICA, Calif. (KABC) -- NASA astronaut Randy Bresnik used to walk the grounds of Santa Monica High School, but today, he is floating on the International Space Station. To the thrill of ...

This long-exposure image from the International Space Station shows the growing tension between celestial beauty and human expansion into space. Aboard the International Space Station (ISS), NASA ...

What does it truly mean to live in space? To wake up in microgravity, repair failing systems, and make sure there’s enough ...

NASA expands the use of its Astrobee robots on the International Space Station to test new technologies and automate tasks in ...

Space is dangerous, so astronauts on the ISS aren't afforded the creature comforts of home. But they make do with ...

"Even though I, as an individual, am traveling to space, this is the journey of 1.4 billion people." Update for 10:40 p.m. ET on June 10: SpaceX announced on Tuesday evening that it has delayed the ...