Gravity is the force of action between two objects. It’s called a natural force because it acts at a distance rather than needing to be in contact. Gravity is the force that holds us down on Earth and ...

From Newton’s falling apple to Einstein’s curved spacetime, our understanding of gravity has come a long way, yet this familiar force remains one of the biggest puzzles in physics.

Astronomers have taken their clearest look yet at how some of the biggest stars in our galaxy are born—and it turns out the ...

In hindsight, it seems almost childish to talk about major leaps in art and science because the advancements seem so obvious.

Because the Earth is doing the work of increasing the Moon's momentum, the Earth's rotation slows down in turn, as its momentum goes to the Moon. To put it another way, as the Moon's orbital momentum ...

Decades ago, a renegade physicist suggested that gravity isn't so much a force as just a byproduct of the universe's tendency to get more disordered. Now this idea might finally be testable ...

Researchers have discovered there was an anomaly in Earth's gravitational field between 2006 and 2008, potentially caused by ...