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A comment on Is dark matter’s “nightmare scenario” true?. Parent comment

Re:Is dark matter’s “nightmare scenario” true? by negativelambda on Sunday December 11, 2022 @02:01AM (#33940856)
At the moment there are no better alternatives that satisfy all the observations. If you try to replace General Relativity with something like Modified Newtonian Dynamics (MOND) [1], then you can get good fits to galaxy rotation curves. However, there are many sources of astronomical/cosmological data that will not bend to alternative gravity models, e.g the precise fluctuations of the cosmic microwave background put stringent bound on the matter components of the Universe.

[1] https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Ou...

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Re:Is dark matter’s “nightmare scenario” true? by rocqua on Sunday December 11, 2022 @06:09AM (#33942194)
I vaguely recall hearing that there are galaxies "without any dark-matter". Or, more accurately, galaxies whose rotational speed is consistent with general relativity without needing to presume dark matter exists in those galaxies.

If that is correct, does it not immediately invalidate MOND?

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