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

Do you know what connects Edwin Hubble’s theory for an expanding universe and Albert Einstein’s cosmological constant? The ...

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

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

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

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

China has quietly solved a problem that only becomes obvious once you try to live and work off-world: clocks on the moon do ...

In this last part of our series on recently digitized books from the Wenner Collection, we are focusing on works that ...

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

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

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