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  2. Big Bang - Wikipedia

    en.wikipedia.org/wiki/Big_Bang

    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 .

  3. History of the Big Bang theory - Wikipedia

    en.wikipedia.org/wiki/History_of_the_Big_Bang_theory

    The history of the Big Bang theory began with the Big Bang's development from observations and theoretical considerations. Much of the theoretical work in cosmology now involves extensions and refinements to the basic Big Bang model. The theory itself was originally formalised by Father Georges Lemaître in 1927. [1]

  4. Cosmogony - Wikipedia

    en.wikipedia.org/wiki/Cosmogony

    The Big Bang theory, which explains the Evolution of the Universe from a hot and dense state, is widely accepted by physicists.. In astronomy, cosmogony is the study of the origin of particular astrophysical objects or systems, and is most commonly used in reference to the origin of the universe, the Solar System, or the Earth–Moon system.

  5. The Big Bang Theory - Wikipedia

    en.wikipedia.org/wiki/The_Big_Bang_Theory

    The Big Bang Theory started off slowly in the ratings, failing to make the top 50 in its first season (ranking 68th), and ranking 40th in its second season. When the third season premiered on September 21, 2009, however, The Big Bang Theory ranked as CBS's highest-rated show of that evening in the adults 18–49 demographic (4.6/10) along with ...

  6. ‘Big Bang Theory’ Alum John Ross Bowie Joins Spinoff in ...

    www.aol.com/big-bang-theory-alum-john-173138756.html

    In “The Big Bang Theory,” Kripke was a fellow physicist at Cal-Tech and a frequent rival of Sheldon’s. Bowie originally joined the series in Season 2 and went on to appear in the show ...

  7. Big Bang nucleosynthesis - Wikipedia

    en.wikipedia.org/wiki/Big_Bang_nucleosynthesis

    Without major changes to the Big Bang theory itself, BBN will result in mass abundances of about 75% of hydrogen-1, about 25% helium-4, about 0.01% of deuterium and helium-3, trace amounts (on the order of 10 −10) of lithium, and negligible heavier elements. That the observed abundances in the universe are generally consistent with these ...

  8. Big Bang Theory’s John Ross Bowie to Reprise Barry ... - AOL

    www.aol.com/entertainment/big-bang-theory-john...

    The Big Bang Theory spinoff at Max continues to assemble the Avengers of recurring characters. John Ross Bowie is set to reprise his fan-favorite role as Barry Kripke in the as-yet-untitled ...

  9. Cosmic inflation - Wikipedia

    en.wikipedia.org/wiki/Cosmic_inflation

    The big bounce hypothesis attempts to replace the cosmic singularity with a cosmic contraction and bounce, thereby explaining the initial conditions that led to the big bang. The flatness and horizon problems are naturally solved in the Einstein–Cartan –Sciama–Kibble theory of gravity, without needing an exotic form of matter or free ...

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