hubble parameter
English Thesaurus
1. (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 (noun.quantity)
hypernym | : | constant, |
definition | : | a number representing a quantity assumed to have a fixed value in a specified mathematical context (noun.quantity) |
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