You probably remember electrons from science class. They're stable subatomic particles that have a negative electrical charge. They're found in atoms and are the primary carrier of electricity in solid materials. But, what you probably haven't heard of, is the idea that each and every electron in existence... is actually the exact same electron. 

This theory states that every electron in the universe is actually one particle that continually travels backward and forward through time. There is a lot of complicated math involved, but it does solve some of quantum physics biggest unanswerable questions. 

The theory was first thought up by John Archibald Wheeler, a theoretical physicist who worked on the hydrogen bomb at Los Alamos and later taught at Princeton. He is largely known for reviving interest in general relativity in the 1940s and 1950s.

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