The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study ...

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Astronomers have directly observed a spinning black hole twisting spacetime, confirming a century-old prediction of ...

Since Einstein, physicists have found that certain entities can reach superluminal (that means "faster-than-light") speeds and still follow the cosmic rules laid down by special relativity.

When a star gets too close to a black hole, the gravity of the black hole changes what happens next in really big ways. They give us a chance to see h.

Now, two unrelated-but-similar experiments confirm that, in a double-slit experiment, detection of a photon’s path (its ...

Scientists are a step closer to solving one of the universe's biggest mysteries as new research finds evidence that two of ...

Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

The gravitational lens JVAS B1938+666 consists of massive bodies ranging from 6.5 billion to 11 billion light-years away, ...

British physicist Melvin Vopson proposes that gravity reduces information entropy, hinting that the universe may function ...