Wouldn't we expect some galaxies to have more dark matter than others? Although, I guess if anything is big enough to converge to an average, a galaxy is.

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MattPalmer1086 an hour ago | parent [-]

Apparently they all have just the right amount arranged in the right way to give the same result in each case.

	▲	Buttons840 3 minutes ago \| parent [-]
		Isn't that weird? Visually galaxies are quite varied, which implies, to me, they have a lot of variability in visible matter. Why wouldn't their supposed dark matter vary too?