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1. en.wikipedia.org › wiki › Big_BangBig Bang - Wikipedia

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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".

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     What Triggered the Big Bang? | How the Universe Works

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     The Big Bang Theory: Season 1

     Jul 8, 2014

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     Rock Mafia - The Big Bang Featuring Miley Cyrus (Official Music Video)

     Nov 1, 2010

     49.3M Views

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3. spaceplace.nasa.gov › big-bang › enWhat Is the Big Bang? - NASA Space Place

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   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!

4. science.nasa.gov › universe › the-big-bangThe Big Bang - NASA Science

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   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.

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6. www.space.com › 25126-What is the Big Bang Theory? | Space

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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.

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7. www.britannica.com › science › big-bang-modelBig-bang model | Definition, Evidence, Videos, & Facts

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   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.

   • Author: The Editors of Encyclopaedia Britannica

8. www.astronomy.com › science › how-did-the-big-bangHow Did the Big Bang Happen? | Astronomy.com

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   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.

9. People also ask

   What is the Big Bang theory?

   • 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".

   Big Bang - Wikipedia

   en.wikipedia.org/wiki/Big_Bang

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   Was the Big Bang an explosion?

   • Although the Big Bang is often described as an "explosion", that's a misleading image. In an explosion, fragments are flung out from a central point into a pre-existing space. If you were at the central point, you'd see all the fragments moving away from you at roughly the same speed. But the Big Bang wasn't like that.

   What is the Big Bang Theory? | Space

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   How did astronomers explain 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! What's This Big Bang All About? In 1927, an astronomer named Georges Lemaître had a big idea.

   What Is the Big Bang? | NASA Space Place – NASA Science for Kids

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   When was the Big Bang first proposed?

   • 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". Various cosmological models of the Big Bang explain the evolution of the observable universe from the earliest known periods through its subsequent large-scale form.

   Big Bang - Wikipedia

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   Why is the Big Bang a good theory?

   • Eventually, the observational evidence, most notably from radio source counts, began to favor Big Bang over steady state. The discovery and confirmation of the CMB in 1964 secured the Big Bang as the best theory of the origin and evolution of the universe.

   Big Bang - Wikipedia

   en.wikipedia.org/wiki/Big_Bang

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   Does the Big Bang model explain the origin of the universe?

   • One of the common misconceptions about the Big Bang model is that it fully explains the origin of the universe. However, the Big Bang model does not describe how energy, time, and space were caused, but rather it describes the emergence of the present universe from an ultra-dense and high-temperature initial state.

   Big Bang - Wikipedia

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10. www.bbc.com › future › articleWhat existed before the Big Bang? - BBC

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    Jan 6, 2022 · Our Big Bang might be the rebirth of one single quantum multiverse, containing infinitely many different universes all occurring together.