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The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. [1] . 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".
Jul 26, 2023 · The Big Bang Theory is the leading explanation for how the universe began.
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.
- The Editors of Encyclopaedia Britannica
Jun 13, 2024 · 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!
Overview The origin, evolution, and nature of the universe have fascinated and confounded humankind for centuries. New ideas and major discoveries made during the 20th century transformed cosmology – the term for the way we conceptualize and study the universe – although much remains unknown.
Jan 18, 2017 · Learn how the big bang theory describes the cosmic cataclysm that created the universe from a single primordial atom. Explore the key events and discoveries that support this theory, from inflation to cosmic microwave background radiation.
Dec 18, 2023 · Learn how astronomers discovered the Big Bang and what happened after the explosion. Explore the evidence, the cosmic background radiation, the dark ages, and the fate of the universe.
