Scientists test Einstein’s quantum challenge with one atom, directly measuring when photon paths erase interference stripes.

Scientists use distant gamma ray bursts to prove that light maintains its constant speed, reinforcing Einstein's theory.

The grand problem that Einstein struggled with in his later years, after publishing his breakthrough works on relativity, is a problem that remains unsolved. We're talking, of course, about the ...

A record-breaking gravitational wave signal let scientists "listen" to a distant black hole merger and put Einstein's gravity to its toughest test yet.

The fabric of space and time is not exempt from the effects of gravity. Plop in a mass and space-time curves around it, not dissimilar to what happens when you put a bowling ball on a trampoline. This ...

Athought experiment at the heart of an argument between famed physicists Albert Einstein and Niels Bohr in 1927 has finally ...

The sharpest black hole collision ever detected just gave Einstein another win—and raised hopes that the next one might ...

This mind-bending relativity illusion has never been seen—until now ...

Albert Einstein was well known in Princeton for his generosity. But Jack Rosenberg remembers the time Einstein's colleagues asked him to turn the tables and help give the famous scientist a gift. "The ...

Albert Einstein, a brilliant physicist, revolutionized our understanding of the universe with his theory of relativity and the iconic E=mc² equation. His groundbreaking work earned him a Nobel Prize ...