Entanglement: Spooky Action

Create two particles in a linked quantum state, then separate them by any distance — across a lab or across the universe. Measure one particle and the other instantly assumes the corresponding state.

Experiments proved Einstein wrong. Quantum entanglement is real and has been verified over distances exceeding 1,200 km using satellites. This does not transmit information faster than light — you cannot control which state your particle collapses into.