hm? as far as i'm concerned, i know it has only one. but when i heard about your question... i having second thoughts. and now i think there's a hundred. it includes the pluto.
One moon, which we call THE Moon. It's made up mostly of cheese, and there is some guy who always watches us, a stalker called the Man in the Moon. Sometimes he has weird facial expressions, but he's always there---watching you.