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The Mystery of Antimatter
反物质之谜
In 1928, British physicist Paul Dirac predicted the existence of antimatter.
1928年，英国物理学家保罗·狄拉克预言了反物质的存在。
His theory was that every type of subatomic particle had an antiparticle.
他的理论是每种亚原子粒子都有一个反粒子。
He believed that an antiparticle would be almost identical to a normal particle, only with an opposite electrical charge.
他认为，反粒子与正常粒子几乎相同，只是带有相反的电荷。
This theory was proven two years later, when American physicist Carl David Anderson discovered a positively-charged electron, later named the “positron”.
两年后，当美国物理学家卡尔·大卫·安德森发现了一个带正电荷的电子（后来被命名为“正电子”）时，这一理论被证明是正确的。
Today, physicists know that our universe contains both matter and antimatter.
现在，物理学家知道我们的宇宙包含物质和反物质。
They have even successfully created antimatter atoms.
他们甚至成功地创造出了反物质原子。
However, antimatter is still one of the greatest mysteries in the universe.
然而，反物质仍然是宇宙中最大的谜团之一。
Scientific theory states the Big Bang should have created equal amounts of matter and antimatter.
科学理论认为，大爆炸应该产生了等量的物质和反物质。
The problem with this idea is the fact that matter and antimatter instantly destroy each other when they come into contact.
这一想法的问题在于，物质和反物质在接触时会立即摧毁彼此。
This means that if the Big Bang had created as much antimatter as it did matter, the universe would not exist today.
这意味着，如果大爆炸产生了和物质一样多的反物质，那么如今的宇宙就不会存在。
