51¶¯Âþ

Letter: Getting your head around an infinite universe (2)

Published 20 May 2026

From Chris Ruff, London, UK

Roger Penrose’s conjecture is that the universe will perhaps end in a state of extreme emptiness. Another proposition is that the end will occur because of the weakening of dark energy resulting in a big crunch. The possibility that our universe will go on forever is dismissed, thankfully; I cannot imagine holding a very long piece of string that has one end but not two. I also wonder whether “begin” and “end” are the right concepts here. Does cyclic cosmology imply an infinite number of successive universes of finite length? Enlightenment please.

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