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  2. Big Bang - Wikipedia

    en.wikipedia.org/wiki/Big_Bang

    English astronomer Fred Hoyle is credited with coining the term "Big Bang" during a talk for a March 1949 BBC Radio broadcast, [45] saying: "These theories were based on the hypothesis that all the matter in the universe was created in one big bang at a particular time in the remote past." [46] [47] However, it did not catch on until the 1970s ...

  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. Fred Hoyle - Wikipedia

    en.wikipedia.org/wiki/Fred_Hoyle

    The theory was one alternative to the Big Bang which, like the Big Bang, agreed with key observations of the day, namely Hubble's red shift observations, and Hoyle was a strong critic of the Big Bang. He coined the term "Big Bang" on BBC radio's Third Programme broadcast on 28 March 1949. [28]

  5. Georges Lemaître - Wikipedia

    en.wikipedia.org/wiki/Georges_Lemaître

    The astronomer Fred Hoyle introduced the term "Big Bang" in a 1949 BBC radio broadcast to refer to cosmological theories such as Lemaître's, according to which the Universe has a beginning in time. [31] [32] Hoyle remained throughout his life an opponent of such "Big Bang" theories, advocating instead a steady-state model of an eternal Universe.

  6. The Big Bang Theory - Wikipedia

    en.wikipedia.org/wiki/The_Big_Bang_Theory

    The Big Bang Theory is an American television sitcom created by Chuck Lorre and Bill Prady, both of whom served as executive producers and head writers on the series, along with Steven Molaro. It aired on CBS from September 24, 2007, to May 16, 2019, running for 12 seasons and 279 episodes.

  7. Timeline of the early universe - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_early_universe

    The timeline of the early universe outlines the formation and subsequent evolution of the Universe from the Big Bang (13.799 ± 0.021 billion years ago) [1] to the present day. An epoch is a moment in time from which nature or situations change to such a degree that it marks the beginning of a new era or age .

  8. George Gamow - Wikipedia

    en.wikipedia.org/wiki/George_Gamow

    Gamow's work led the development of the hot "big bang" theory of the expanding universe. He was the earliest to employ Alexander Friedmann's and Georges Lemaître's non-static solutions of Einstein's gravitational equations describing a universe of uniform matter density and constant spatial curvature. Gamow's crucial advance would provide a ...

  9. Edwin Hubble - Wikipedia

    en.wikipedia.org/wiki/Edwin_Hubble

    Explanations which try to get around what the great telescope sees, he said, fail to stand up. The explosion, for example, would have had to start long after the earth was created, and possibly even after the first life appeared here." [40] [41] (Hubble's estimate of what we now call the Hubble constant would put the Big Bang only 2 billion ...