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Hubble's constant, Hubble constant

 
 

(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 reciprocal of the Hubble constant is the age of the universe

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is a kind of:

  • constant — a number representing a quantity assumed to have a fixed value in a specified mathematical context

 
 

 

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Definition. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more