15 Facts About Big Bang


Big Bang event is a physical theory that describes how the universe expanded from an initial state of high density and temperature.

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Various cosmological models of the Big Bang explain the evolution of the observable universe from the earliest known periods through its subsequent large-scale form.

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In 1964 the CMB was discovered, which convinced many cosmologists that the competing steady-state model of cosmic evolution was falsified, since the Big Bang models predict a uniform background radiation caused by high temperatures and densities in the distant past.

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Big Bang models offer a comprehensive explanation for a broad range of observed phenomena, including the abundances of the light elements, the CMB, large-scale structure, and Hubble's law.

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Big Bang is not an explosion of matter moving outward to fill an empty universe.

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Milky Way George Gamow Space

In other words, the Big Bang is not an explosion in space, but rather an expansion of space.

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Big Bang models developed from observations of the structure of the universe and from theoretical considerations.

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Big Bang did not grasp the cosmological implications of this fact, and indeed at the time it was highly controversial whether or not these nebulae were "island universes" outside our Milky Way.

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Big Bang inferred the relation that Hubble would later observe, given the cosmological principle.

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The other was Lemaitre's Big Bang theory, advocated and developed by George Gamow, who introduced BBN and whose associates, Ralph Alpher and Robert Herman, predicted the CMB.

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Significant progress in Big Bang cosmology has been made since the late 1990s as a result of advances in telescope technology as well as the analysis of data from satellites such as the Cosmic Background Explorer, the Hubble Space Telescope and WMAP.

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Radiation from the Big Bang was demonstrably warmer at earlier times throughout the universe.

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One of the common misconceptions about the Big Bang model is that it fully explains the origin of the universe.

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Big Bang explains the evolution of the universe from a starting density and temperature that is well beyond humanity's capability to replicate, so extrapolations to the most extreme conditions and earliest times are necessarily more speculative.

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Some believe the Big Bang implies a creator, while others argue that Big Bang cosmology makes the notion of a creator superfluous.

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