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oscillating universe

noun, Astronomy
a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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oscillating universe in Science
oscillating universe
A model of a closed universe in which the expansion of the universe slows and reverses, causing a collapse into a singularity, which then explodes into a new universe, repeating the cycle. Such a model implies that our universe is just one of a long line of universes. Scientists have not been able to develop a theory of how a collapsed universe could explode into a new one.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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