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Evolution of the universe
- 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.
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The big-bang model is the widely held theory of the evolution of the universe from a state of extremely high temperature and density 13.8 billion years ago. It is based on Einstein's theory of relativity and the cosmological principle, and predicts the abundances of matter, radiation, and neutrinos in the present universe.
- Planck Time
In big-bang model …a certain epoch called the Planck time....
- Expanding Universe
Einstein, the big bang, and the expansion of the universe....
- Planck Time
Jul 26, 2023 · The Big Bang Theory is the leading explanation for how the universe began. Simply put, it says the universe as we know it started with an infinitely hot and dense single...
The Big Bang was the initiation of the continuing expansion of the universe from a state of high density and temperature ( its central singularity ). [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".
May 6, 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!
Learn how the universe evolved from the Big Bang, the origin of space, time, and matter. Discover the fundamental forces, the nature of dark matter and dark energy, and the latest discoveries from NASA missions.
The Big Bang Theory is a scientific model that explains the origin and evolution of the Universe from a singularity 13.8 billion years ago. Learn how astronomers discovered the expansion of the Universe, what happened during the inflation period, and what evidence supports the theory.
Learn the scientific definition of the big bang theory, a theory in astronomy that explains the origin of the universe from a single point of nearly infinite energy density. See examples, word history, and related entries.
