antimatter, does it exist?

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paul.fr

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antimatter, does it exist?
« on: 18/05/2007 19:47:10 »
How do we know that there is really antimatter in the universe?

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another_someone

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antimatter, does it exist?
« Reply #1 on: 18/05/2007 19:58:53 »
We have created antiparticles in a particle accelerator; and positrons (which are anti-electrons) are a part of natural radioactive decay for some elements.