The question of how gravity interacts with the quantum world has long perplexed physicists, but a non-quantum theory of space ...

Everything around us, from atoms and molecules to planets and galaxies, is governed by two extraordinarily successful ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For over a century, scientists ...

It's a problem that Albert Einstein identified more than 100 years ago. It's a problem we could be on the cusp of solving, or that could take another century to untangle. And the problem is that we ...

Einstein’s theory of general relativity, where gravity is caused by the curvature of space-time, is awesome. It has been confirmed to an incredible level of precision, extending to fifteen significant ...

A ring in space, at least on paper, can do something a black hole cannot. It can connect distant regions without forcing ...

Most lovers of science fiction are quick to tell you that there's a "time-honored" (pun intended) way to build a time machine - somehow get a wormhole and use it as a bridge to travel through time.