Le mer. 11 sept. 2024, 18:15, Alan Grayson <[email protected]> a écrit :
> > > On Wednesday, September 11, 2024 at 10:08:42 AM UTC-6 Quentin Anciaux > wrote: > > > > Le mer. 11 sept. 2024, 18:04, Alan Grayson <[email protected]> a écrit : > > > > On Wednesday, September 11, 2024 at 4:33:51 AM UTC-6 Quentin Anciaux wrote: > > > > Le mer. 11 sept. 2024, 11:49, Alan Grayson <[email protected]> a écrit : > > > > On Wednesday, September 11, 2024 at 3:26:01 AM UTC-6 Quentin Anciaux wrote: > > > > Le mer. 11 sept. 2024, 11:23, Alan Grayson <[email protected]> a écrit : > > > > On Tuesday, September 10, 2024 at 3:50:08 PM UTC-6 Quentin Anciaux wrote: > > > > Le mar. 10 sept. 2024, 23:19, Alan Grayson <[email protected]> a écrit : > > > > On Tuesday, September 10, 2024 at 2:19:42 PM UTC-6 John Clark wrote: > > On Tue, Sep 10, 2024 at 3:57 PM Alan Grayson <[email protected]> wrote: > > > *>> Even if you ignore Dark Energy and postulate that the Hubble constant > really is constant, every object a megaparsec away (3.26 million > light-years) is moving away from us at about 70 kilometers per second. So > if you try to look at objects a sufficiently large number of megaparsec > away you will fail to find any because they are moving away from us faster > than the speed of light.* > > > >* That was in the past. At present, the universe is expanding at about > 70 km/sec.* > > > *Galaxies are receding from the Earth at 70 km/sec for EACH megaparsec > distant from Earth they are. The further from Earth they are, the faster > they are moving away from us, so if they are far enough away they will be > moving faster than the speed of light away from us. * > > *> You're assuming the universe today is infinite,* > > > *NO! I said IF the entire universe is infinite today then it was always > infinite, and IF it was finite 10^-35 seconds after the Big Bang then it's > still finite today. I also said nobody knows if the entire universe is > infinite or finite. * > > > *>* *Hubble's law applies to the past, not to the future,* > > > *What the hell?! * > > > *How about an intelligent reply? Obviously, if the universe is infinite > today, it was always infinite. But that's what I am questioning. For > galaxies to fall out of view, they have to moving at greater than c. Now > they aren't receding that fast. How will they start moving that fast? > You're applying Hubble's law without thinking what it says. Just because a > galaxy is now receding at less than c, how will continued expansion > increase that speed to greater than c? AG * > > > The farther they are the faster they are receding from you, so as they > continue to get farther away they receed faster from you till the point > they receed faster than c and go out of your horizon. > > Quentin > > > Instead of preaching the Gospel, why don't you try to justify Brent's > equation to prove your point, if you can. I see the distance separation > along the equator for two separated galaxies as linear as the radius of the > sphere expands. Brent uses Hubble's law, but the proof of what you claim > shouldn't depend on Hubble, but just the geometry. AG > > > I did multiple times with the balloon analogy which is purely geometrical, > see previous answers. > > > I don't think so. You just asserted it. AG > > > The equation that links distance and recession velocity in both cases > comes from the same geometric principles of uniform expansion in space. The > proportionality between distance and velocity is a natural consequence of > how expansion works, whether it’s on a 2D surface like a balloon or in 3D > space like our universe. > > The expansion of the balloon and the universe follow similar dynamics > because, in both cases, the expansion is homogeneous (the same everywhere) > and isotropic (the same in all directions). > > If you mark two points close to each other on the balloon and start > inflating it, those two points will move apart slowly. However, if you mark > two points farther apart, they will move away from each other much more > quickly as the balloon expands. > > > This is what you keep claiming, but have yet to offer a *mathematical > proof*. Try this; two galaxies on the equator of a sphere, with a > separation distance s, and the equator expanding as a function of its > radius r to simulate expansion. The recessional velocity is ds/dt, which > depends on dr/dt. If dr/dt is constant, so will be ds/dt, and the > recessional velocity is constant and cannot reach c or greater. What is > wrong with this proof, falsifying Hubble's law and your model? AG > > > I did multiple times and gave an example with points... up to you to read > it. > > > *You and Clark have no clue what a mathematical proof is. You're just > stating what you believe, which might be true, but hardly qualifies as a > proof of concept. AG * > 🤣🤣🤣 ok figure out by yourself then... you're doing religion, not trying to understand your mistake. > > In the same way, in the universe, the farther away a galaxy is, the more > space there is between us and that galaxy. Since each portion of space is > expanding, more distant galaxies experience the cumulative effect of the > expansion over several portions of space. This means that for a galaxy at a > great distance, the total expansion of space is larger, which results in a > higher recession velocity. > > * John* K Clark See what's on my new list at Extropolis > <https://groups.google.com/g/extropolis> > > hwt > > > -- > 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/5485c7a2-a527-448a-b337-3c8c60466d73n%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/5485c7a2-a527-448a-b337-3c8c60466d73n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > 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/c6b38b12-78d8-4245-a011-1f5fd04cf8b0n%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/c6b38b12-78d8-4245-a011-1f5fd04cf8b0n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > 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/b0006226-f930-437b-8df8-c258118625d3n%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/b0006226-f930-437b-8df8-c258118625d3n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > 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/d056136a-41f7-41c6-9c79-18d648ecfd4an%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/d056136a-41f7-41c6-9c79-18d648ecfd4an%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > 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/0fd9074f-2e29-4d97-add9-f3adf85af25cn%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/0fd9074f-2e29-4d97-add9-f3adf85af25cn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Everything List" group. 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