InTheEndEntropyWins t1_iwigw5v wrote
Reply to comment by Ok_Meat_8322 in Most cosmologists say dark matter must exist. So far, it’s nowhere to be found. Examining the philosophy of science behind two rival theories can explain why. by ADefiniteDescription
There are lots of different types of observations that dark matter explains.
Even if MOND perfectly explained the rotational speed in galaxies it couldn’t explain the other observations. So you still need dark matter.
> The most serious problem facing Milgrom's law is that it cannot eliminate the need for dark matter in all astrophysical systems: galaxy clusters show a residual mass discrepancy even when analyzed using MOND
The fact that some form of unseen mass must exist in these systems detracts from the adequacy of MOND as a solution to the missing mass problem, although the amount of extra mass required is a fifth that of a Newtonian analysis, and there is no requirement that the missing mass be non-baryonic.
Ok_Meat_8322 t1_iwik6sj wrote
>There are lots of different types of observations that dark matter explains.
Sure, and the entire purpose of MOND is to account for these observations without having to invoke dark matter. So being forced to accept "MOND + dark matter" would completely defeat the purpose of proposing MOND in the first place.
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