Antimatter propulsion, the researchers argue, would enable speeds that could get spacecraft to Alpha Centauri, the nearest star system (roughly 4.3 light-years away), in just a few decades.

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 ...