Antimatter-反物质

马达

LikeSuperman's alter-ego, Bizzaro, the particles making up normal matteralso have opposite versions of themselves. An electron has a negativecharge, for example, but its anti-matterequivalent, the positron, is positive. Matter and anti-matterannihilate each other when they collide and their mass is convertedinto pure energy by Einstein's equation E=mc2. Some futuristic spacecraft designs incorporate anti-matter engines.