什么是反物质?它真的存在吗?

任何一种基本粒子都有自己的反粒子。它们和正粒子的电性相反但电荷相等，自旋方向相反，质量相等。由反粒子组成的物质就是反物质。正反物质相遇的时候会发生比聚变和裂变要剧烈的多的核反应，叫做湮灭反应。湮灭反应时，物质全部转化为能量。所以反物质蕴涵着大量的能量。但很难控制。目前在宇宙空间中发现了少量的反物质基本粒子，在实验室里也能制造出反粒子。我记得正电子现在已经可以在医学上应用了。

依相对论反物质是绝对的存在

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