hubble's constant

Meaning of word hubble's constant from English dictionary with examples, synonyms and antonyms.

hubble's constant noun

Meaning : (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.

Synonyms : hubble constant, hubble parameter, hubble's parameter

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