The only difference with black holes is that they are incredibly dense, so that if another object gets closer than the event ...

A new recipe of "quadratic gravity" could help to better define the picture of the Big Bang and the singularity that existed ...

Gravity feels constant, almost invisible. It holds oceans in place and keeps us grounded, so we rarely question it. Yet every ...

The concept of spacetime, first described in Einstein's theory of general relativity, has since been widely studied by many ...

After a 10-year effort, physicists got a value for “Big G” that does not settle the debate over one of nature’s hardest numbers to nail down.

From reverse waterfalls to gravity-defying hills, some places on Earth seem to challenge physics. These strange spots attract ...

We have long taken it for granted that gravity is one of the basic forces of nature—one of the invisible threads that keeps the universe stitched together. But suppose that this is not true. Suppose ...

Measuring the strength of gravity is extraordinarily difficult, and different experiments have always disagreed – but a new ...

A study of 300,000 galaxies confirms that gravity follows Newton's law and deepens the mystery of dark matter.

Emergent gravity is a bold idea. It claims that the force of gravity is a mere illusion, more akin to friction or heat—a property that emerges from some deeper physical interaction. This emergent ...

Examining the fine motor skills of space travelers can help improve safety for future missions, scientists say ...