expanding universe

noun Astronomy.
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.
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Example sentences
One thing that astonishes me on an almost daily basis is the expanding universe
  of applications available in the cloud.
If one starts with gravity and an expanding universe, you eventually end up
  with stars, planets and galaxies.
The ever expanding universe reminds me of the insignificance of all the
  problems of the world.
They say an infinitely expanding universe cannot be so because the laws of
  physics do not work in an infinite cosmos.
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