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Hubble's law

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noun Astronomy.
the law that the velocity of recession of distant galaxies from our own is proportional to their distance from us.
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Origin of Hubble's law

First recorded in 1930–35; named after E. P. Hubble, discoverer of the relationship
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for Hubble's law

Hubble's law

noun
astronomy a law stating that the velocity of recession of a galaxy is proportional to its distance from the observer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Hubble's law

Hubble's law
[ hŭbəlz ]

A law of cosmology stating that the rate at which astronomical objects in the universe move apart from each other is proportional to their distance from each other. Current estimates of the value of this proportion, known as Hubble's constant, put its value at approximately 71 kilometers per second per megaparsec.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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