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

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

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 ...

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

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

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

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

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

To progress to the next level in understanding reality, we need to combine quantum mechanics and Einstein’s general ...

Cosmic Horizon theory suggests heaven exists 273 billion trillion miles from Earth where galaxies move at light speed and ...