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What Is Antimatter and Why Does It Exist?

Summary by Billiken
Antimatter is composed of antiparticles: particles that have the same mass as their ordinary equivalents, but some opposite properties, such as electric charge. The best known example is positron, which has the same mass as electron but positive charge. It does not mean that it is a "negative matter." Its name comes from those antiparticles, which function as counterparts of particles that form everyday matter. When matter and antimatter are fou…
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Antimatter is composed of antiparticles: particles that have the same mass as their ordinary equivalents, but some opposite properties, such as electric charge. The best known example is positron, which has the same mass as electron but positive charge. It does not mean that it is a "negative matter." Its name comes from those antiparticles, which function as counterparts of particles that form everyday matter. When matter and antimatter are fou…

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Billiken broke the news on Friday, October 23, 2026.
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