Contrary to what you may intuit, the Earth's gravity isn't uniform, and there's one place where it's much weaker than anyone expected.

This new propulsion system could rewrite the rules of spaceflight—not to mention completely defy conventional physics.

According to scientists, this ambipolar electric field is thought to be just as crucial to Earth as both gravity and magnetism.

The Moon is, very slowly, moving away from the Earth and one day, it's going to impact time as we know it. The reason why ...

Williams, who once sparked health concerns with her apparent weight loss, even said she had been able to start running after just days in Earth's gravity. Speaking at a press conference ...

Could a reactionless, gravity-defying propulsion system actually work? A former NASA engineer says yes, but scientists are ...

After nine months in space, Nasa astronauts Butch Wilmore and Suni Williams have finally arrived back on Earth. Their SpaceX ...

Astronauts Barry “Butch” Wilmore and Suni Williams are back on Earth after nearly nine months in space and readjusting to life with gravity. Down to their DNA, astronauts’ bodies can change ...

It's been 286 days since astronauts Sonny Williams and Butch Wilmore have felt the pull of Earth's gravity. Gravity is really, really tough, tough, learning to live with it, but also without it.