Define big-bang theory. big-bang theory synonyms, big-bang theory pronunciation, big-bang theory translation, English dictionary definition of big-bang theory. n a cosmological theory postulating that approximately 12 billion years ago all the matter of
Big Bang theory: 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.
The meaning of BIG BANG THEORY is a theory in astronomy: the universe originated billions of years ago in a rapid expansion from a single point of nearly infinite energy density.
Big Bang, the inAstronomy topic From Longman Dictionary of Contemporary EnglishBig Bang, thenoun1theexplosionat the beginning of time, which most scientistsbelievecaused theuniversetoexistthe Big Bang theory2thenamegiven to the changes in the system andrulesof theLondonstockexchangewhich came intoeffe...
The Big Bang Theory is a theory that seeks to explain the beginning of the universe. Discover how the universe and its galaxies were formed and...
Learn the definition of Bigbang and browse a collection of 24 enlightening community discussions around the topic.
Big Bang Theory - astronomy.
Andrew R.Liddle, inNew Astronomy Reviews, 2001 The standard hotbig bang theory, by which I mean the description of the Universe from a time of around 1 s onwards, is an extremely successful one, passing some crucial observational tests of which I would highlight five. ...
In subject area: Physics and Astronomy Big Bang Nucleosynthesis refers to the era in the early universe when nucleons combined to form light nuclei, such as deuterium, helium, and lithium, as the primordial plasma cooled down. This process depended on the rates of electromagnetic, weak, and st...
Big-bang model, widely held theory of the evolution of the universe. Its essential feature is the emergence of the universe from a state of extremely high temperature and density—the so-called big bang that occurred 13.8 billion years ago. Learn more ab