| 单词 | big bang theory |
| 释义 | big bang theory(bɪɡ bæŋ ˈθɪərɪ) noun physics the theory that the origin of the universe was in a cataclysmic explosion in which all the matter of the universe, packed into a small superdense mass, was hurled in all directions big-bang theorynoun a cosmological theory postulating that approximately 12 billion years ago all the matter of the universe, packed into a small superdense mass, was hurled inall 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 |
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