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Which would still not rule out anything else...
That non-uniformity though, yes, this is a good point for a "dark matter exists" hypothesis. Although I would still word it differently: Not "We see non-uniform distributions of dark matter mass" but "We see a non-uniform mass-like effect". I've learned that keeping the terms as neutral as possible, or it might exert too much pressure on the thought process to go in just one direction.
Which is basically an extreme case on "not uniformly distributed".
That is acceptable. I was not "selling" MOND here (or any other theory), btw, I'm just wondering what kind of possibilities are there to explain all those observations. "An invisible mass nobody has observed except for it's gravity effect" sounded a bit thin of a leg to stand on there, while incomplete models are a rather widespread phenomenon.
Gravity? I mean, we are talking about something that has gravity. Did planets form because of electromagnetism?
Indeed. Try that with the wannabe-sciences like economics...
Well, at least they share the common trait of not being found yet... ;-)
I don't have a bias against new particles. For me as a non astrophysicist, just another theory having a big hole was simply more likely. And the theory of gravity breaks anyway when it approaches quantum theory, why shouldn't it be broken elsewhere, too?
But I can easily accept the information given here, primarily the case with uneven distribution, which is a good case for something being there. Now you just have to nail the particle down.