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Hubble's parameter

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1. n. (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today Source: wordnet

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constant expansion hubble actually cosmology distance due galaxy measuring observer rate ratio recession regarded speed today universe

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Hubble constant Hubble law Hubble parameter Hubble's constant Hubble's law hubble-bubble hubbling

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