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

Electrons can be elusive, but Cornell researchers using a new computational method can now account for where they go—or don't ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

At least two ingredients are needed to make jets — rotation and magnetic fields — and these produce the ubiquitous laserlike jets we see.

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

Twist a stack of atom-thin carbon sheets by just the right amount and the material stops behaving like ordinary metal or ...