According to the '''Big Bang Theory''' the Universe expanded outwards from a very hot, dense state approximately 14 billion years ago; an expansion which is said to continue today. It is the most popular theory about the origin of the Universe, widely accepted in the scientific community. It was first proposed by [[Georges-Henri Lemaitre]]. More evidence for the Big Bang was found by [[Edwin Hubble]]. Later [[George Gamow]] predicted that the Big Bang would leave an observable microwave background radiation. This radiation was subsequently discovered by [[Bell Labs]] and found to be close to that predicted by Gamow (Gamow predicted a background radiation level equivalent to a roughly 3 K black body object, and the observed level is that of a 2.725 K body).
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According to the '''Big Bang Theory''' the Universe expanded outwards from a very hot, dense state approximately 14 billion years ago; an expansion which is said to continue today. It is the most popular theory about the origin of the Universe, widely accepted in the scientific community. It was first proposed by [[Georges-Henri Lemaitre]]. Big Bang Theory supporters claim that more evidence for the Big Bang was found by [[Edwin Hubble]]. Later [[George Gamow]] predicted that the Big Bang would leave an observable microwave background radiation. This radiation was subsequently discovered by [[Bell Labs]] and found to be close to that predicted by Gamow (Gamow predicted a background radiation level equivalent to a roughly 3 K black body object, and the observed level is that of a 2.725 K body).