[DejaJude]

I think the moon is what we really need to worry about. The moon is like a giant cue ball and someday an asteroid is going to strike it and send it right into the planet earth and sink us into the corner pocket of space. We can only hope that the asteroid puts too much English on the moon cue ball, causing it to veer into Mercury or Venus instead, or maybe even scratch entirely.

Well, what would happen to the tides if the moon went wandering away?

[SunkenCiv]

A third of the tides come from the Sun, that is, the tides would still be there, but they'd be one third their, uh, size or whatever.