An illustration of antimatter falling under the influence of gravity.

Antimatter falls like matter, upholding Einstein’s theory of gravity

It’s official: Antimatter falls down, not up. In a first-of-its-kind experiment, scientists dropped antihydrogen atoms and watched them fall, showing that gravity attracts antimatter toward Earth, rather than repelling it. The study confirms a pillar of Einstein’s general theory of relativity known as the weak equivalence principle. According to that principle, gravity pulls on every…

Read More