Topical Terminology > Big Bang Theory
Big Bang Theory
For Big Bang Theory we have terms and definitions in 2 topics. The topics are Astronomy and Evolution.
Big Bang Theory (Astronomy) 
The widely held belief that the Universe began in a fiery explosion, 10-15 billion years ago. The cosmic microwave background, big bang nucleosynthesis, and the observed Hubble expansion of the Universe are considered proof of the big bang theory.
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Big Bang Theory (Evolution)
The theory that states that the universe began in a state of compression to infinite density, and that in one instant all matter and energy began expanding and have continued expanding ever since.
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