researchers have managed to trap only a few atoms of antihydrogen for brief periods. That’s a long way from the kilograms needed to propel a starship. “Storing solid or liquid antimatter in ...

An artist's conceptual rendering of antihydrogen atoms falling out the bottom of the magnetic trap of the ALPHA-g apparatus. As the antihydrogen atoms escape, they touch the chamber walls and ...

Antimatter — the mysterious substance that's the mirror opposite of matter in most ways — falls downward in gravity like everything else in the universe, a team of physicists reported ...