Is There a Black Hole in the Universe?

In order to really build confidence in it, you aen't like, an understanding of the mechanism. So when we had the idea that maybe there were black holes at the centres of these galaxies, and that they were the engine providing the power needed for this crazy radiation, people started to believe maybe this could be real. I sae and a lot of these in the sky. Or are they pretty rare, or are they supercommon? They're actually both a lot of them in the sky, and they're pretty rare. Like, we know of about 750 thousand quasars out there by now,. Most galaxies don't have a quasor most galaxies are not emitting crazy radiation