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> "You are not saying this galaxy behaves in such a way that MOND cannot explain" No, that's exactly what's being stated. MOND doesn't predict this galaxy. T
by nate_meurer 9y ago
> "You are not saying this galaxy behaves in such a way that MOND cannot explain"
No, that's exactly what's being stated. MOND doesn't predict this galaxy. This galaxy rotates slower than others of similar directly observable mass. In other words, it confirms the current model of gravity, which by definition is evidence against any modified model of gravity.
- autokad 9y agoWas any of that said above? No.
- nate_meurer 9y agoGP actually said exactly that, just in a slightly different way: > "This galaxy discovery, though, appears to be strong evidence against MOND or other modified-gravity theories since the dark matter is missing in this case." Since MOND assumes that dark matter does not exist (or at least does not interact with gravity), then under MOND this galaxy should not exist. MOND stipulates that all galaxies of a given size should rotate at the same speed, and that speed is greater than that predicted by newtonian mechanics. This galaxy defies MOND predictions, and appears to obey Newton's. Does that make sense or am I missing something else?