Tracking UFOs

"Unidentified flying objects could be so many things, from military aircraft, to tricks of the light, to weather phenomena. But what we really want to know is: are they spaceships carrying visitors from other planets? For hundreds of years, people have been trying to make sense of UFO sightings. Within these pages, readers will discover . . . accounts of sightings as well as rational explanations. They'll discover the . . . figures involved in discussions of alien life and also what it takes to identify a hoax. Tips on what to do when encountering a supposed UFO, and representations of UFOs and aliens in pop culture round out this . . . text"--Provided by publisher.