Gravity is a basic force that affects everything we experience. Watch as a flat earther attempts to explain it without using ...

A variation on the theory of quantum gravity — the unification of quantum mechanics and Einstein's general relativity — could help solve one of the biggest puzzles in cosmology, new research suggests.

For nearly a century, astronomers have watched galaxies spin and the universe expand in ways that visible matter alone cannot ...

Spacecrafts don’t just rely on rockets—they use planets to pick up speed! Spacecrafts don’t just rely on rockets—they use planets to pick up speed! It’s called a gravity assist, and it’s one of the ...