big-bang theory Thesaurus Encyclopedia 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 an...
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.
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Big Bang Theory - astronomy.
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
Georges Lemaître was a Belgian astronomer and cosmologist who formulated the modern big-bang theory, which holds that the universe began in a cataclysmic explosion of a small, primeval “super-atom.” A civil engineer, Lemaître served as an artille
Understand what steady state theory is. Also, learn about the big bang theory and understand how is it different from the steady state universe...
The Big Bang Theory Astronomy: study of the universe Cosmology: the study of the origin and evolution of the universe Big bang theory: the theory that all matter and energy in the universe was once compressed into a small volume, called a Singularity, at an extremely high temperature Exploded...
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...
Vera Rubin, who essentially created a new field of astronomy by discovering dark matter, was a favorite to win the Nobel Prize in physics for years. But she never received her early-morning call from Stockholm. On Sunday, she died at the age of 88. Rubin’s death would sadden the scient...