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by throwawaymaths 971 days ago
Yes. MOND predicts the keplerian decline, due to the EFE, hence:

> these new data are STRONG support for MOND

In standard cosmology keplerian decline is predicted because other galaxies have it. It makes no sense at all from the structure of DM halos that galaxies are supposed to have.
1 comments
misja111 968 days ago
You have it completely backwards. Keplerian decline, i.e. the decline of the rotation speed the further away you get from the center of your solar system, galaxy or whatever, is predicted by traditional cosmology. What is detected in other galaxies, and what was thought to be detected in our own galaxy is well, is a lack of Keplerian decline. That is where both dark matter and MOND stepped in trying to explain. See e.g. https://link.springer.com/article/10.12942/lrr-2012-10

What was detected now, is that our galaxy shows Keplerian decline after all. Which, at least for our own galaxy, removes the need for introducing MOND or dark matter.

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throwawaymaths 966 days ago
No. Keplerian decline doesn't mean that the entire rotation curve is keplerian. It means that it regresses to keplerian after a certain radius. You cannot explain the plateauing part within that radius without MOND or LCDM.
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