As I found while working on my own novel, writing about aliens can be strangely helpful in this pursuit. Just as astronomers use telescopes to examine celestial objects light-years away, novelists can invoke imagined civilizations to reveal truths closer to home,

Spielberg really loves his aliens, doesn't he?Disclosure Day comes out today, and this is the fourth time this man has sat behind a camera and said, "Okay, but what if something came down from the sky.

Astronomer Jon Willis warns that alien signals could be passing Earth unnoticed because humans are searching on the wrong scales, with the wrong assumptions about life and intelligence.