Hubble law

Hubble's law

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

1930–35; named after E. P. Hubble, discoverer of the relationship Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
Hubble's law
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 10th Edition
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American Heritage
Science Dictionary
Hubble's law   (hŭb'əlz)  Pronunciation Key 
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
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