It kinda boggles the mind, eh? We are near the outer edge of the Milky Way Galaxy (illustrated here?). Our little Solar System revolving around our little star, the Sun. And then consider there are supposed to be a hundred billion other stars in our little galaxy and then a hundred billion other galaxies in the known universe. So, isn't that about a brazzilian million billion chances for other life out there.
Nah.. we're alone.