For more than a century, gravity has been the stubborn outlier in physics, resisting every attempt to be folded neatly into the quantum rules that govern the rest of nature. Now a convergence of bold ...

Negative energy may not be the showstopper it might be the geometry. That’s the bottom line from the latest warp‑drive study ...

For the first time, scientists have observed a swirling distortion in spacetime caused by a rapidly spinning black hole—an ...

Scientists detect a 20-day wobble from a star-shredding black hole, confirming spacetime twisting predicted by Einstein.

The cosmos has served up a gift for a group of scientists who have been searching for one of the most elusive phenomena in ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

Black holes are notoriously difficult to spot unless they are active, and one type of activity is the destruction of a star, ...