Black holes embody the ultimate abyss. They are the most powerful sources of gravity in the universe, capable of dramatically ...

Decades ago, a renegade physicist suggested that gravity isn't so much a force as just a byproduct of the universe's tendency ...

Physicists are rethinking time itself. Long treated as a basic part of the universe, time may instead be an illusion—a side ...

A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with ...

For decades, physicists have faced one of science’s greatest puzzles: merging quantum mechanics, which describes tiny ...

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

According to Einstein’s theory of general relativity, gravity is a stretching of space and time, and it forces objects to move through curved space.

At cosmological scales, Albert Einstein’s theory of general relativity has given scientists an immensely accurate blueprint ...

"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum ...

Furthermore, because gravitational interactions are weak, more precision is needed to study true quantum gravity effects beyond general relativity, which is a classical theory.