Part I: What's out there?. Where is everybody? ; Are we all Martians? ; What does ET look like? ; Do aliens have sex? ; What are we looking for? ; Where is ET hiding? ; How would the world be told? ; Could we talk to ET? ; How would the world respond? ; Have we already found ET? ; Will aliens kill us all?

Part II: Getting out there. Will we colonize the Moon and Mars? ; Can we go interstellar? ; Will there be a Homo spaciens? ; Is time travel possible? ; What will happen to us?