Why the Universe Exists

When the Big Bang occurred, it created equal amounts of matter and anti-matter. Why didn’t the anti-matter simple consume all the matter? Because of a difference in the properties of matter and anti-matter known as the charge-parity (CP) violation.

[Scientists are still working it out.](http://news.sciencemag.org/sciencenow/2012/02/evidence-for-antimatter-anomaly-.html)

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