Quantizing gravity — and for the faint of heart, don't worry, we'll define what that means soon enough — can't be that hard, could it? I mean, we've got the other forces —electromagnetism, strong ...

When teachers explain ocean tides, they frequently describe how the moon's gravity pulls on Earth and all of its water. This, they often say, leads to a gravitational imbalance, which stretches the ...

Astronomers have long described black holes as cosmic traps so powerful that nothing — not even a beam of light — can claw ...

Albert Einstein's general theory of relativity describes gravity as the warping of space-time geometry by mass, a concept distinct from Isaac Newton's absolute space and time, and has been empirically ...

Gravity is the force of attraction between two objects. It pulls everything downwards towards the centre of the Earth. Gravity holds the Earth and the other planets in their orbits around the Sun.

You may have heard people say that aboard the International Space Station (ISS) there's "zero gravity," but in fact, gravity is still very much present. The station orbits Earth at an altitude of ...