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

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

New quantum experiments may settle the century-old Einstein vs Bohr debate, revealing key insights into quantum behaviour.

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

Einstein’s Theory of General Relativity is currently our best approximation of how the universe ticks. But there are holes.

The Princeton that Albert Einstein knew in 1933 was sharply divided by the color line; a long-established border—marked by ...

According to Einstein's theory of relativity and a new NIST study, time on Mars passes faster than on Earth. Discover the ...

Because the moon has less gravity than Earth does, time passes slightly differently there. This effect was first predicted by ...

In an effort to bring together the domains of gravity and quantum theory, Albert Einstein and Nathan Rosen proposed a ...

A near-100-year-old debate between the theoretical physicists Albert Einstein and Niels Bohr has finally been settled—and not in the former’s favor. A team of physicists in China have realized a ...