WordReference Random House Unabridged Dictionary of American English © 2025
closed′ u′niverse, 
  1. Astronomy, Physics(in cosmology) a hypothetical expanding universe that contains sufficient matter to reverse the observed expansion through its gravitational contraction. Cf. open universe.

'closed universe' also found in these entries (note: many are not synonyms or translations):
curvature of space - missing mass - open universe - oscillating universe

Forum discussions with the word(s) "closed universe" in the title:


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