If “dark matter” couples to gravitation, why don’t we see any evidence of their conglomerates crashing into other celestial bodies?
...
Since dark matter doesn’t interact with electromagnetism, it conglomerated on a much larger scale such as that for galaxies and galaxy clusters.
Stars and planets can pass right through it because it doesn’t interact with visible matter via electromagnetism, and the gravitational effect of dark matter is pretty much the same from one end of the Solar System to the other, so no gravitational force due to dark matter is noticeable on our scale.
Yet electromagnetism is also gravitationally effected, such as in gravitational lensing of distant galaxies.
Ugh. Too much theory. It’s making me crazy.