
From its earliest days, science fiction has asked whether or not we're alone in the universe. Steven Spielberg, Ridley Scott, Sigourney Weaver and others ponder the question: What can aliens teach us about ourselves?
What does science fiction imagine about what waits for us in outer space - and how will those discoveries change who we are? George Lucas, Zoe Saldana, Jeff Goldblum and others share their thoughts and theories.