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by pdonis
3001 days ago
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> dark matter is considered rather low mass density i.e. doesn't bend light too much. Black holes would. Not if the holes were spread out in a very large diffuse cloud around a galaxy. A single hole would bend light significantly, but the averaged effect of a huge diffuse cloud of holes around a galaxy would be basically zero (because there would be as many holes bending light one way as the other, so their effects overall would cancel out). |
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