Quantum Entanglement

Einstein called it "spooky action at a distance" and refused to believe it was real. In 2022, Alain Aspect, John Clauser, and Anton Zeilinger won the Nobel Prize for proving it is. When two particles are entangled, measuring one instantly determines the state of the other — regardless of distance. Chinese scientists demonstrated this across 1,200 kilometers using the Micius satellite in 2017. The implications for quantum computing, cryptography, and teleportation (of information, not people — yet) are staggering.