I guess that makes sense… if matter wasn’t already coalescing, then what would have collapsed to create the initial black hole? The black hole forms an accretion disk, then the accretion disk pulls other matter into orbit… and suddenly you have a galaxy? So really the “rest” of the galaxy ends up orbiting around its collective center of gravity, that just so happens to be close to the center of this initial big ol’ black hole.

Or something like that? I read that on the underside of a Snapple cap.

Yea! That’s certainly how I understand it. I was curious how that fit into the black hole contributing little to holding the galaxy together as commented. Maybe it just plays a larger part in the early formation of the galaxy.

So is it just some coincidence that super massive black holes tend to be at the center of spiral galaxies?

The difference in cardinality of infinities is certainly true, but also doesn’t change the fact that they are still infinities.

Take the example you brought up.

For ever single integer, there are an infinite amount of numbers between it and the previous integer. If you’re talking about traversing the numbers 0->1 in finite time, then of course you can find that you’ll never get to 1. However we aren’t talking about traversing universes in a finite amount of time. We’re talking about existence. The fact that I cannot traverse the numbers between 0->1 doesn’t prove the non existence of the number 2.

Thus, even if the types of infinities at play here mismatch, it doesn’t mean that elements within those infinities don’t exist. They’re infinite.