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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.
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
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".
3 days ago · 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!
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. Learn more.
Jun 11, 2019 · The big-bang theory is the dominant theory of the origin of the universe. In essence, this theory states that the universe began from an initial point or singularity, which has expanded over billions of years to form the universe as we now know it.
Dec 17, 2015 · Learn how the Big Bang Theory explains the origin and evolution of the cosmos from a singularity to the present day. Explore the evidence, timeline and history of the Universe from the Planck Epoch to the current epoch.
