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How big is the universe today?


If one defines the size of the present universe in terms of a hypersurface of simultaneity generated by the spatial geodesies orthogonal to our world line today, then it is finite in all expanding Big Bang Friedmann models.

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Page, D.N. How big is the universe today?. Gen Relat Gravit 15, 181–185 (1983).

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  • Differential Geometry
  • World Line
  • Present Universe
  • Friedmann Model
  • Universe Today