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    Big Bang
    /ˌbɪɡ ˈbaŋ/

    noun

    • 1. the rapid expansion of matter from a state of extremely high density and temperature which according to current cosmological theories marked the origin of the universe.
    • 2. (in the UK) the introduction in 1986 of major changes in trading on the Stock Exchange, principally involving widening of membership, relaxation of rules for brokers, and computerization.

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    • Image courtesy of thesciencefaith.com

      thesciencefaith.com

      • The big bang theory of the universe starts with a single point which rapidly expanded and slowly evolved into the cosmos we see today. Some 13.8 billion years ago, the universe was a dense, tremendously hot (too hot for the existence of atoms), extremely tiny point that rapidly surged outward in all directions.
      science.nasa.gov/mission/hubble/science/science-behind-the-discoveries/hubble-big-bang/

      Hubble Big Bang - Science@NASA

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  5. science.nasa.gov › hubble-big-bangHubble Big Bang - Science@NASA

    23 hours ago · Big Bang. The big bang theory of the universe starts with a single point which rapidly expanded and slowly evolved into the cosmos we see today. Some 13.8 billion years ago, the universe was a dense, tremendously hot (too hot for the existence of atoms), extremely tiny point that rapidly surged outward in all directions.

  6. spaceplace.nasa.gov › big-bangWhat Is the Big Bang? | NASA Space Place – NASA Science for Kids

    4 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!

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    • A research published in the journal Science has explained how the Big ...
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    • Big Bang Expansion

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  8. en.wikipedia.org › wiki › Chronology_of_the_universeChronology of the universe - Wikipedia

    2 days ago · The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.

  9. en.wikipedia.org › wiki › UniverseUniverse - Wikipedia

    1 day ago · [38] [39] The Big Bang model states that the earliest state of the universe was an extremely hot and dense one, and that the universe subsequently expanded and cooled. The model is based on general relativity and on simplifying assumptions such as the homogeneity and isotropy of space.

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  11. www.scienceforthepublic.org › cosmos-the-big-bangCosmos: The Big Bang - Science for the Public

    Sep 28, 2024 · The universe emerged instantaneously some 13.7 billion years ago in a unique kind of explosion known as the Big Bang. Two features of that creation are mysteries for science. The first is that speed of the explosion, which was an acceleration from nothing and greater than the laws of physics allow. What occurred in the first mini-fraction of ...

  12. en.wikipedia.org › wiki › Hubble's_lawHubble's law - Wikipedia

    1 day ago · Hubble's law is considered the first observational basis for the expansion of the universe, and today it serves as one of the pieces of evidence most often cited in support of the Big Bang model. [3] [4] The motion of astronomical objects due solely to this expansion is known as the Hubble flow. [5]

  13. spaceplace.nasa.gov › menu › kidsBig Bang | NASA Space Place – NASA Science for Kids

    4 days ago · What Is the Big Bang? explore. Games. Activities. Videos. Glossary. NASA science games, articles and activities for kids.

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