I would rather have them coming out than coming in.
To my knowledge, the Universe is populated by many, many different intelligent life-forms besides those of the human type of design; but humans are scattered over the Universe far and wide.
Ellie Arroway: [to a group of children] I'll tell you one thing about the universe, though. The universe is a pretty big place. It's bigger than anything anyone has ever dreamed of before. So if it's just us... seems like an awful waste of space. Right? <br />
From the film "Contact"
There are those who walk amongst us.
how did you get this information?
yes they do as the amount of planets in the universe are infinate