On Tuesday, February 25, 2025 at 12:46:46 PM UTC-7 Brent Meeker wrote:
I think all cosmologist, like Hartle, recognize that *the observable universe* was much smaller in the past. Which is perfectly compatible with *the universe* be spacially flat and infinite. Brent I fully anticipated that response. But why would the observable universe behave radically different from the entire principle, particularly in light of the Cosmological Principle? AG On 2/25/2025 2:40 AM, Alan Grayson wrote: On page 21 Hartle asserts that at the BB, "the whole of the observable universe today was compressed to the smallest possible volume." He's considered authoritative on General Relativity. I wonder; why do some experts think the universe decreases in volume as we go back in time, but others, such as Penrose (according to Quentin), believe in an always infinite universe where the average distance between galaxies decreases as we back in time? AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/everything-list/4a6e054a-28ab-4ddc-941f-b158caa36a35n%40googlegroups.com.
