[Crazieman]

Uh... there’s tons of old, giant craters all over earth. I’m pretty sure those planets were around then as well.

Also, check the Cheyablinsk(sp?) meteor from last year.

[Mouton]

Absolutely. The only question is not when but what will be the size of it. Something approaching the one which landed around the Caribbean is an exterminator. The one that hit in Siberia in the early 1900s could be a big problem in a populated area but not an exterminator.

[SunkenCiv]

/bingo