In 1932, physicists glimpsed antimatter for the first time — a strange mirror image of regular matter with mind-bending potential. Nearly a century later, this ghostly substance could someday fuel a ...

Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks.

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 ...

Scientists have demonstrated the existence of gravity between antimatter and Earth, reaffirming Albert Einstein’s General Theory of Relativity. It is thought that Isaac Newton's historic work on ...