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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 · What Is the Big Bang? 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 · 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 about the big-bang model in this article.
Jul 1, 2019 · Virtually all astronomers and cosmologists agree the universe began with a “big bang” — a tremendously powerful genesis of space-time that sent matter and energy reeling outward.
Jan 6, 2022 · Our Big Bang might be the rebirth of one single quantum multiverse, containing infinitely many different universes all occurring together.
