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

Legend has it that Isaac Newton had the moment of inspiration that would lead to his theory of gravity when, on a warm afternoon, he saw an apple fall from a tree and wondered why it should fall down ...

In a bold step toward solving one of science’s most puzzling problems, researchers have proposed a new way to bring gravity into the same mathematical language as the other forces of nature. While the ...

On Wednesday (Sept. 27) morning, an international team of physicists reported a major finding about an elusive form of matter known as antimatter. It appears that antimatter responds to gravity the ...

If you drop a piece of antimatter, it will fall down to the ground just like regular matter, according to the first ever measurement of how these strange particles are affected by gravity. While this ...

It’s a force to be reckoned with. Gravity is what holds Earth in orbit around the sun and keeps us from floating off into space. Unfortunately, it can — quite literally — be a real downer. The ...