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That's still conjecture, Steven. They're using dark matter as an explanation for what they're seeing with those dwarf galaxies. We haven't a clue of two things here....1. What the blazes is dark matter, and 2. Does it even exist. Unless you have definitive evidence of its existence, all you can say about this is something is creating the influence that is keeping these galaxies together. What that is, we don't know. Saying something exists in theory and then proving its actual existence are two entirely different things. I think the theorists and such need to take a step back and not proclaim one way or the other what is influencing these galaxies until they have definitive proof, either way.
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