We are not alone: the extraordinary history of UFOs and aliens invading our hopes, fears, and fantasies

Attack of the flying saucers: a modern phenomenon begins

Close encounters: alien contactees and abductees

The phenomenon continues: mass sightings, conspiracies, and flying triangles

The search for extraterrestrial intelligence: scientific exploration from Galileo to the Galileo project

The truth is out there, officially: the government acknowledges UFOs.