Bing Wang

A sunspot, a dark island on the scorching surface, breathes. Every three minutes, a wave spreads from it, runs along an invisible magnetic arch, and makes the plasma above a neighboring spot flare with a radio signal. Radio telescopes caught seven such flares in a row on February 14, 2024.

A pendulum that swings almost half a quadrillion times per second. This isn't mechanics: it's the pulse of light trapped by ytterbium atoms. Instead of gears, there's an optical lattice — a standing wave that holds atoms at its nodes like peas in a pod.