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Why do we say the universe has a "comparatively short age" when we have no other universes to compare it to?
by dejawu 9y ago
Why do we say the universe has a "comparatively short age" when we have no other universes to compare it to?
- mac01021 9y agoThey're comparing the age of the universe (on the order of 10 billion years) to the expected lifetime of a red dwarf (on the order of a trillion years).
- QAPereo 9y agoThere is no reason to believe that the universe has a meaningful end, but it appears to have had some kind of origin less than 15 blya. Even if you posit proton decay and use heat death as and endpoint, you’re still talking about many more orders of magnitude of “future” than “past” and... well... what else do we mean when we say young?
- bpd1069 9y agoIf you use the Stelliferous Era [From 10^6 (1 million) years to 10^14 (100 trillion) years after the Big Bang. --wikipedia] as a meaningful period we are still at the very beginning, less than 0.0138% through.
- deleted 9y ago[deleted]
- deleted 9y ago[deleted]