expanding universe

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nounAstronomy.
  1. a concept or representation of the universe, based on the observed redshifts of distant galaxies, in which the galaxies are assumed to be receding from each other at a speed proportional to their separation as a result of the expansion of the universe.

Origin of expanding universe

1
First recorded in 1930–35

Words Nearby expanding universe

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

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