Big-bang-theory meaning

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The big bang theory is defined as the theory that the universe may have been created in a huge explosion at least 12 billion years ago, or is a successful comedy series created by Chuck Lorre in 2007 about four geeky scientists and a waitress neighbor.

An example of the big bang theory is the accepted scientific theory that the universe started when a hot dense state expanded and exploded causing the universe to cool and start to convert energy into its current state.

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A scientific theory describing the origin of all space, time, matter, and energy approximately 13.7 billion years ago from the violent expansion of a singular point of extremely high density and temperature.
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A theory of cosmology holding that the expansion of the universe began with a gigantic explosion (big bang) between 12 and 14 billion years ago.
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