Scientists discover “angel particle” that is its own antiparticle

Every fundamental particle in the universe has an antiparticle, which has the same mass but the opposite charge. If a particle should ever meet its antiparticle, the two would annihilate each other in a flash of energy. But it’s long been theorized that there’s an exception to the rule, with certain particles that are actually their own antiparticles. Now, scientists from Stanford and the University of California have found the first strong evidence for this type of particle, which they dub the “angel particle.” The theory dates back to 1937,…

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