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Relativity, Cosmology, and Time

Standard Cosmology

Another example that offers exact solution is the homogeneous and isotropic space filled with pressure-less dust. It is applicable to the case of the cosmic expansion, if each dust point presents a galaxy. Universes of this type are variously known as Friedman universes, Friedman-Robertson-Walker universes, ... etc. See "Quantization of the Friedmann Equation" for an attempt to merge quantum theory with relativity,
and the 21st Century version of the Standard Cosmology.

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