On this day in history, August 2, 1932... Physicist Carl Anderson discovered the positron, the electron's antiparticle. Antimatter is one of the most perplexing concepts in quantum physics. Since every particle should theoretically have its own antiparticle, it would have been logical to assume that matter and antimatter were created in equal amounts at the birth of our universe, but this does not seem to be the case. When matter and antimatter meet, they annihilate each other, so if the amounts were equal, then no universe could exist because all would be annihilated. Still, physicists are left to wonder why so much matter exists in our universe while the amount of antimatter is considerably less.