On Saturday, May 31, 2025 at 2:24:00 PM UTC-6 Brent Meeker wrote:
And to be clear it was thought that the Hubble parameter was decreasing asymptotically to a constant value. But *even with the Hubble parameter constant* a receding galaxy is slower when it's close and recedes faster as it gets further away. The recession speed is proportional to the distance; that's Hubble's law. Brent *Isn't the increasing recessional speed of distant galaxies purely a geometric effect of the expansion of the universe? A long time ago, as I recall, that was your argument, and I recapitulate it by imagining points on an expanding sphere. AG* On 5/31/2025 7:39 AM, John Clark wrote: On Sat, May 31, 2025 at 10:17 AM Alan Grayson <[email protected]> wrote: *> doesn't Hubble's law imply the universe was expanding faster in the past* *NO. Until the late 1990s everybody, including Edwin Hubble, figured that the expansion of the universe must be slowing down due to gravity's attraction, but then we discovered the expansion is actually accelerating, and nobody knows why. So the universe is expanding faster now than it was 10 billion years ago. * *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* -- 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/7e599d74-5966-411e-984b-340c52612487n%40googlegroups.com.
