The two major competing theories of the origin of the universe are [[creationism|creation ex nihilo]], and the [[Big Bang]]. In addition, some people believe the universe has always existed, and therefore has no "origin" at all. | The two major competing theories of the origin of the universe are [[creationism|creation ex nihilo]], and the [[Big Bang]]. In addition, some people believe the universe has always existed, and therefore has no "origin" at all. |