The definition of the Hubble Constant implies the rate of expansion slows as time advances. I don't see that the two values contradict this conclusion. AG
On Friday, December 2, 2022 at 3:24:35 AM UTC-7 Lawrence Crowell wrote: > Red shift data from supernovae SN1 give H = 74km/sec-Mpc. The velocity of > a region at distance d is v = Hd. Using the CMB data H = 70km/sec-Mpc. The > two data points appears distinct at a rather high sigma. > > LC > > On Friday, December 2, 2022 at 3:15:15 AM UTC-6 [email protected] wrote: > >> It's measured about 70 km/sec/megaparsec. This is a direct measurement >> using red shift to measure recessional velocity, and different standard >> candles depending on the distance. So, at a distance of one megaparsec, the >> expansion rate is 70 km/sec; at two megaparsecs the expansion rate is 140 >> km/sec; and so on. This suggests the rate of expansion is greater as we go >> back in time; or conversely, that the rate of expansion is slower as we go >> forward in time. How is this reconciled with the 1998 measurements that the >> rate of expansion is actually speeding up? 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/1f580da2-c6d5-46fc-a6e5-34f9716cbe66n%40googlegroups.com.
