*･゜ﾟ･*:.｡..｡.:*･'(*ﾟ▽ﾟ*)'･*:.｡. .｡.:*･゜ﾟ･* happy birthday. We were told to say something nice to you. The reason why earth doesn't have more catastrophic asteroid impacts is because Jupiter more or less eats all of them or flings them back out of the immediate solar system.