(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
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hubble constant::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | hubble's constant, hubble's parameter, hubble parameter |
| Type of | constant |
