Newly made laser-cooled antimatter could test foundations of modern physics

Superchilled antiatoms offer a new way to test symmetry and Einstein's theory of gravity

laser light cooling antimatter

For the first time, physicists have used laser light (illustrated, purple) to cool antimatter. Gray lines show an antihydrogen atom’s movement before cooling; blue is after.

Chukman So/TRIUMF

For the first time, physicists have used lasers to deep-freeze antimatter.