On Tuesday, January 21, 2020 at 10:52:06 AM UTC-7, Alan Grayson wrote: > > > > On Tuesday, January 21, 2020 at 5:03:10 AM UTC-7, John Clark wrote: >> >> On Tue, Jan 21, 2020 at 1:09 AM Alan Grayson <[email protected]> wrote: >> >> *> **if it started as finite, it must remain finite* >> >> >> Not necessarily. If the universe started off finite but then expanded, >> not infinitely fast just faster than light and just for a short time (as in >> inflation), then the universe would be open regardless of how many degrees >> the angles of a triangle add up to because spatial curvature and spacetime >> curvature are not the same thing. >> >> John K Clark >> > > *I agree they're different and concede that I don't know the exact > distinction. However, I strongly disagree that finite rates of expansion > will result in an open universe. I believe it will be a closed > hyper-sphere, but I am open to being wrong. AG * >
*If one has an expanding hyper-sphere which is closed, why would expansion faster than light at some point in its history, make it open? 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 on the web visit https://groups.google.com/d/msgid/everything-list/ddf1a17f-af15-4f10-a454-3526372a2907%40googlegroups.com.
