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

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

It's been 286 days since astronauts Sonny Williams and Butch Wilmore have felt the pull of Earth's gravity. Gravity is really ...

For over half a century, scientists suspected a quiet but powerful electric field might be influencing Earth’s upper ...

NASA’s AWE mission just released millions of gravity wave images from space, unveiling atmospheric forces that ripple through ...

NASA identifies five significant risks that could hinder a successful manned mission to Mars, including cosmic radiation and ...

Getting high enough to escape Earth's atmosphere takesa massive amount ... So gravity pulls everything downwards,all the time, but we can overcome gravity if we have enough force inthe opposite ...