big-bang theory


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big-bang theory

n
(Astronomy) a cosmological theory postulating that approximately 12 billion years ago all the matter of the universe, packed into a small superdense mass, was hurled in all directions by a cataclysmic explosion. As the fragments slowed down, the galaxies and stars evolved but the universe is still expanding. Compare steady-state theory
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.big-bang theory - (cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperaturebig-bang theory - (cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature
scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable"
cosmogeny, cosmogony, cosmology - the branch of astrophysics that studies the origin and evolution and structure of the universe
References in periodicals archive ?
The big-bang theory has filtered into the consciousness of theologians, philosophers, and others who freely admit they are at best lay cosmologists.
Try as I may I find no hint of a big-bang theory in Genesis but,as Mr Lloyd so rightly says, to discuss matters of faith whilst remaining ignorant of facts of that faith is impossible.