identified outside our solar system that seem to be far enough away from their suns and dense enough that they might be able to support some form of life. so it makes it increasingly less likely that we're alone. >> oh, you're trying to give me a hint there are aliens. if we were visited some day, i wouldn't be surprised. feel how threatened we all would be feeling if we were visited. >> you and bill riley would be hiding in a bunker today. >> i love the "independence day" reference. sarah palin made an appearance on "the tonight show" last night, but she didn't