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The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. [1] The concept of an expanding universe was scientifically originated by physicist Alexander Friedmann in 1922 with the mathematical derivation of the Friedmann equations.
The theory he devised to explain what he found is called the Big Bang theory. [citation needed] In 1931, Lemaître proposed in his "hypothèse de l'atome primitif" (hypothesis of the primeval atom) that the universe began with the "explosion" of the "primeval atom" – what was later called the Big Bang.
In 1927, Georges Lemaître set out a theory that has since come to be called the Big Bang theory of the origin of the universe. [4] In 1948, Fred Hoyle set out his opposing Steady State theory in which the universe continually expanded but remained statistically unchanged as new matter is constantly created.
A visual representation of the division order of universal forces. In physical cosmology, the quark epoch was the period in the evolution of the early universe when the fundamental interactions of gravitation, electromagnetism, the strong interaction and the weak interaction had taken their present forms, but the temperature of the universe was still too high to allow quarks to bind together ...
Recombination occurred about 378 000 years [1] after the Big Bang (at a redshift of z = 1100). [2] The word "recombination" is misleading, since the Big Bang theory does not posit that protons and electrons had been combined before, but the name exists for historical reasons since it was named before the Big Bang hypothesis became the primary ...
Kaley Cuoco explains why her pixie cut on 'The Big Bang Theory' was 'the worst decision': 'I just f***ing cut my hair off and didn’t tell anyone' Kerry Justich October 10, 2022 at 2:48 PM
That’s a big reason he’s pushing for a wide range of tariffs. In 2024, the United States pulled in $83 billion in revenue from customs duties, which was less than 2% of all revenue.
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