Select an option below to continue reading this premium story. Already a Honolulu Star-Advertiser subscriber? Log in now to continue reading. The principle also helps us understand why matter is ...

A cloud of ultracold atoms is like a motel with a neon “no vacancy” sign. If a guest at the motel wants to switch rooms, they’re out of luck. No vacant rooms means there’s no choice but to stay put.

Researchers have visualized for the first time the direct effect of the Pauli exclusion principle, a fundamental feature of quantum mechanics that allows ordinary matter to be stable, among other ...