Ufology - the study of Unidentified Flying Object (UFO) reports and sightings - is still alive and kicking after more than 60 years since the term 'flying saucers' was first coined in 1947.

This Haynes UFO Investigation Manual by Nigel Watson takes a comprehensive look at the history of UFO sightings, the many official and semi-official investigations of the subject, the mundane explanations for UFO sightings, the classifications used by ufologists and the theories that have been put forward to explain the remaining 'unidentified' and inexplicable cases.

This is a comprehensive overview of the world of ufology that should delight and fascinate anyone who has looked to the skies and wondered if we are alone in this vast Universe.