3 ms·
When the dark matter sails through, is there still enough mass to keep it together, or do they evaporate? Are there "dark galaxies" to match the dark-matter-les
by jfengel 7mo ago
When the dark matter sails through, is there still enough mass to keep it together, or do they evaporate? Are there "dark galaxies" to match the dark-matter-less ones?
I can't imagine how we'd ever find them. We'd have to get extremely lucky and find one that happened to lens another one behind it. That happens rarely enough with regular galaxies, and I imagine that those "dark galaxies" would be even rarer.
(And you'd still have to consider other explanations, like black holes.)
- gostsamo 7mo agoAs far as I get, dark matter is much more than normal one. However, we don't know what are the exact interactions between dm particles and hence cannot predict the shapes they will take.
- gus_massa 7mo agoIIRC they interact too weakly to form a nice disk and they form a round blob.
- jsbisviewtiful 7mo agoPersonal theory: Possibly the Great Attractor has something to do with a very large collection of dark matter - potentially dark matter galaxies. Hard to say though until we figure out how to see that section of space.
- heavenlyblue 7mo agoThere no reason to believe dark matter had anything to do with the Great Attractor, it's just that we can't see it due to it being on the other side of the galaxy what makes it great
- jsbisviewtiful 7mo agoRead into it. Large amounts of dark matter fall into the one of several theories presented by the professionals as what could be causing the phenomenon.
- mikhailfranco 7mo agohttps://en.wikipedia.org/wiki/Dark_galaxy https://en.wikipedia.org/wiki/Dark_galaxy