Chinese researchers are poring over a puzzling gravitational wave signal that appears to defy the standard script of black hole collisions, reviving one of physics’ most audacious possibilities: that ...

It is possible that there are many other universes that exist parallel to our universe. Theoretical physicist Brian Greene, author of The Elegant... A Physicist Explains Why Parallel Universes May ...

Parallel worlds sound like science fiction, but modern physics paints a different picture. Quantum mechanics suggests that particles don’t choose one path—they follow all possible paths, branching ...