Kenneth Chang

2. As soon as it moves, it's offset, and there's a gravitational force trying to pull back to where it started.

We could do the math if you want.

I'm sure, but although the ping-pong ball is stable both ways, chances are if you drop it, it will end up weight down.

You're thinking weight glued to something hollow. Here it's small mass glued to huge and heavy Pluto. Not analogous.

Again, the only way to really figure it out is math.

It's important to start with a likely hypothesis. The most massive part of Pluto facing away from Charon isn't likely.

Creation of impact crater will happen at random pt on surface. Question is where it will migrate to.

Arguments like these, you can't win (or convince) with words. Do the math, and math will tell what happens.