On Saturday, June 7, 2025 at 5:35:23 AM UTC-6 John Clark wrote:
On Sat, Jun 7, 2025 at 1:59 AM Alan Grayson <[email protected]> wrote: *> My problem is this; the light from distant galaxies is highly red-shifted, indicating a huge recessional velocity, but at a much earlier time.* *No. The James Webb telescope recently found a galaxy that had a red shift of 14.44, from that number astronomers calculate that it took light 13.5 billion years to reach us, so we're observing how that galaxy looked 13.5 billion years ago. However during that 13.5 billion years the universe has not only been expanding it's been accelerating, so back then the universe was expanding slower not faster than it is now. Today that galaxy is not 13.5 billion light years from us, it is 34.7 billion light years from us. Even if we could travel at the speed of light we could never reach that galaxy in a finite number of years, and any galaxy that has a red shift greater than 1.8 is forever out of our reach.* *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* You say we're observing how that galaxy looked 13.5 billion years ago, but that the redshift being observed today, gives us the recessional velocity today? Seems contradictory. AG q19 -- 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/98958c06-9a06-448d-937e-f637fda403d6n%40googlegroups.com.
