As is often the case (and I suspect you're already familiar with it) Randall Munroe tackled the moon->black hole question: https://what-if.xkcd.com/129/ https:

As is often the case (and I suspect you're already familiar with it) Randall Munroe tackled the moon->black hole question: https://what-if.xkcd.com/129/ https://what-if.xkcd.com/129/