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Giant collision created galaxies devoid of dark matter
- kevbin 4y agoAs far as anyone has shown, the whole universe is devoid of dark matter—“the most abundant matter in the Universe”, lol.
- Gunax 4y agoI would think this is strong evidence that dark matter exists. There have been theories like eg. The law of gravity does not hold at long distances, or some other inaccuracy in our math. But if that were true, then we would expect it tobe universal. That some galaxies rotate just as we would expect (with gravity proportional to inverse square distance), and others operate differently indicates that there isn't a fundamental flaw in our laws of nature. Some galaxies just have more dark matter than others.
- deleted 4y ago[deleted]
- Zamicol 4y ago"might have"
- JumpCrisscross 4y ago> "might have" Sure, fine. But we're seeing two modes of galaxy rotational physics. One mode, uncommon, that matches classical predictions. A second, more common, which matches only if we add a distribution of unseen matter. That's compelling.
- stevenalowe 4y agoWondering if dark matter is correlated with having a black hole at the center of a galaxy?
- deleted 4y ago[deleted]
- jjcon 4y agoOpen article anywhere?