The Big Bang

In the first billionth of a second of the big bang, the universe was concentrated into an area roughly equivalent in size to a house. This high concentration of energy resulted in the creation and annihilation of matter and antimatter. Further expansion cooled the universe beyond the point where matter and antimatter could instantaneously come into existence.

A big question that has plagued scientists has been simply, "where is that antimatter?" It seems to simply not exist. Earlier scientists speculated that entire galaxies of antimatter existed in other portions of the universe, but most scientists have come to believe that this hypothesis as wrong. There is a distinct lack of observable energy from the annihilations that would occur if large amounts of antimatter did exist in the universe.

The current hypothesis that explains the lack of antimatter is that matter and antimatter are not symmetric. This created an imbalance during the big bang and resulted in the creation of about .0001% more matter than antimatter. After one second almost all of the matter and antimatter had annihilated each other, which would have left that .0001% of matter to from the current universe.

Title Page - What is Antimatter? - The History of Antimatter - The Big Bang - The Imbalance - Antimatter: Now and Later - Bibliography

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