My question has nothing to do with modyfying gravity
On Fri, Nov 29, 2013 at 3:58 PM, John Clark <johnkcl...@gmail.com> wrote: > On Fri, Nov 29, 2013 at 3:31 PM, Richard Ruquist <yann...@gmail.com>wrote: > > > Does the Bullet cluster display any of the characteristics expected of a >> Dark-Matter-less galaxy such as a spinning galaxy blowing apart.? >> > > For years people have tried to modify the law of gravitation so that it is > consistent with what we see with our telescopes but it just doesn't work. > If you observe the Bullet Cluster what you see is 2 clusters colliding and > the regular matter that we can see staying in the center just as we'd > expect regular matter to do and the Dark Matter (detected by gravitational > lensing) remained spread out just as you'd expect Dark Matter to do. There > is no way modifying gravity can explain that. > > And in addition, if you tinker with gravity so that galaxies like our own > Milky Way hold together and behave as they should then galactic clusters > like the Local group don't behave as we see them do. And if you tinker with > gravity in another way so that galactic clusters behave as they do in our > telescopes then individual galaxies don't. But if you invoke Dark Matter > then everything comes out fine. > > John K Clark > > -- > 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 everything-list+unsubscr...@googlegroups.com. > To post to this group, send email to everything-list@googlegroups.com. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/groups/opt_out. > -- 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
