[Astrophysics] Of Accretion Disks and When Black Holes Collide

These two videos complement each other. The first explains some of the second.

There's another type of singularity, which is primordial singularities. And involves some particle physics and dark matter.

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Black Hole Accretion Disks Explained
[media=https://m.youtube.com/watch?v=mMU6E0YIhXw]

When Black Holes Collide

[media=https://m.youtube.com/watch?v=rJLtT0QXoPo]

Hope you found this informative. 😊