Physicists coaxed a single particle of antimatter to sit still for months

Antimatter usually vanishes the instant it meets ordinary matter. A team led by Northwestern's Gerald Gabrielse has done something close to impossible: trapped one single positron — antimatter's lightest particle — and kept it calm for months, nudging it with microwaves and reading its individual quantum jumps. The point of the patience is precision: the team can now measure the positron's magnetic properties to about one part in ten trillion and compare them with the electron's. Theory says the two should match exactly. If they don't, it would be one of the biggest discoveries in a century of physics.

SDG 9 · Industry, innovation and infrastructure — Mechanism: tech innovation