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The Big Bang is a physical theory that describes how the universe expanded from a primordial state of high density and temperature. It was first proposed as a physical theory in 1931 by Roman Catholic priest and physicist Georges Lemaître when he suggested the universe emerged from a "primeval atom".
Jun 13, 2024 · The Short Answer: The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching!
The Big Bang - NASA Science. Explore Cosmic History. Study how the universe evolved, learn about the fundamental forces , and discover what the cosmos is made of. Overview. The origin, evolution, and nature of the universe have fascinated and confounded humankind for centuries.
Jul 26, 2023 · The Big Bang Theory explains how the universe began with an infinitely hot and dense single point that inflated to form the ever-expanding cosmos we see today.
Jun 18, 2024 · The big-bang model is the widely accepted theory of the origin and evolution of the universe from a hot and dense state 13.8 billion years ago. Learn about the assumptions, predictions, and observations that support this theory, as well as its alternatives and controversies.
- The Editors of Encyclopaedia Britannica
Sep 30, 2022 · Learn about the big bang, the event that created the universe 13.8 billion years ago. Find out how astronomers measure the expansion rate of the universe and what it reveals about its age and history.
Learn how the Big Bang theory explains the origin and expansion of the universe, and how it relates to dark matter and dark energy. Explore the first moments and events after the Big Bang, from quarks and electrons to stars and galaxies.
