WordNet: Hubble's constant, Hubble's parameter, Hubble constant, Hubble parameter

Sanatista
(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



Hubble's constant


Hubble's parameter


Hubble constant


Hubble parameter