HyperDic: hubble_parameter

English > 1 sense of the expression Hubble parameter:
NOUNquantityHubble parameter, Hubble's constant, Hubble constant, Hubble's parameter(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer
English > Hubble parameter: 1 sense > noun 1, quantity
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.
SynonymsHubble's constant, Hubble constant, Hubble's parameter
Categorycosmology, cosmogony, cosmogenyThe branch of astrophysics that studies the origin and evolution and structure of the universe
BroaderconstantA number representing a quantity assumed to have a fixed value in a specified mathematical context
Catalanconstant de Hubble

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