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1. www.exploratorium.edu › explore › originsOrigins: CERN: Ideas: The Big Bang | Exploratorium

   www.exploratorium.edu › explore › origins

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   A Cooling, Expanding Universe. For a brief moment after the Big Bang, the immense heat created conditions unlike any conditions astrophysicists see in the universe today.

2. home.cern › science › physicsThe early universe | CERN

   home.cern › science › physics

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   All matter in the universe was formed in one explosive event 13.7 billion years ago – the Big Bang. The Big Bang. In 1929 the American astronomer Edwin Hubble discovered that the distances to far-away galaxies were proportional to their redshifts.

3. www.astronomy.com › science › how-did-the-big-bang-happenHow Did the Big Bang Happen? | Astronomy.com

   www.astronomy.com › science › how-did-the-big-bang-happen

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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. By David J....