On Monday, January 13, 2020 at 6:18:21 AM UTC-7, John Clark wrote: > > > On Mon, Jan 13, 2020 at 8:05 AM Alan Grayson <[email protected] > <javascript:>> wrote: > > * > **infinite spatial extent means that a beam of light will never >> return to its starting point, as it would for a spherical surface. For a >> flat surface, a beam in any direction never returns to its starting point. >> THIS is what infinite spatial extent MEANS.* > > > I agree. And if inflation is correct and in the very early universe the > distance between any 2 points expanded faster than light then they've moved > beyond their observable horizon and once you've done that you can't go > back, so even today a beam of light sent from one of those points can never > reach the other. > > John K Clark >
*Right, and that's how the non-observable region is created during inflation, but it would occur independent of the rate of expansion, provided the expansion continues. Like I said, it's a purely geometric effect of expansion. 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/4f1e3921-9c0e-4e83-9702-4da51976b79b%40googlegroups.com.
