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Asked by anon-192502 to Sophie, Obi, Kelly, Jessica on 14 Nov 2018.
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anon answered on 14 Nov 2018:
Normal matter is all around us, it makes the stars, earth and nearly everything we know.
The different matters are discovered by theoretical physicists, who use mathematics and particle accelerators to smash particles together to see if any new ones can be observed from the collision.
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