big bang theory

big bang theory
a theory that deduces a cataclysmic birth of the universe (big bang) from the observed expansion of the universe, cosmic background radiation, abundance of the elements, and the laws of physics. Also called big-bang model. Cf. steady state theory.
[1950-55]

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Universalium. 2010.

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  • big bang theory — big bang .theory n the big bang theory the idea that the universe began with a single large explosion (the big bang ), and that the pieces are still flying apart →↑steady state theory …   Dictionary of contemporary English

  • big-bang theory — [big′baŋ′] n. a theory of cosmology holding that the expansion of the universe began with a gigantic explosion (big bang) between 12 and 20 billion years ago: see STEADY STATE THEORY * * * …   Universalium

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