Even if it turns out that time loops never take shape, studying them provides key insights into the deepest rules of reality.

For more than a century, gravity has been the stubborn outlier in physics, resisting every attempt to merge Einstein’s smooth ...

Physicists have spent a century trying to reconcile the smooth fabric of spacetime in general relativity with the jittery ...

Exactly 200 years ago, a French engineer introduced an idea that would quantify the universe’s inexorable slide into decay. But entropy, as it’s currently understood, is less a fact about the world ...

The unique properties of high-entropy alloys make them ideal for hydrogen storage, offering advantages in stability and ...