the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 kilometers per second per megaparsec.
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Origin of Hubble's constant
First recorded in 1950–55; after E. P. Hubble
Words nearby Hubble's constant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021