The UFO Encyclopedia is a revised, updated omnibus third edition of a work originally published in three volumes between 1990 and 1996: UFOs in the 1980s (1990), The Emergence of a Phenomenon: UFOs from the Beginning through 1959 (1992), and High Strangeness: UFOs from 1960 through 1979 (1996); and as two volumes in 1998 as The Phenomenon From the Beginning.This new edition includes over one hundred new entries and offers context for the reams of declassified UFO-related documents that have been released in the United States, Brazil, and other countries; explores secret government programs that were revealed in recent years and before; and compiles and explains the UFO phenomena in all its aspects-the sightings, close encounters, investigations, debates, symposia, personalities, hoaxes, debunking campaigns, and conspiracy theories-including expert analysis of the UFO era (which began in the summer of 1947), new works that burst on the scene following release of Steven Spielberg's film Close Encounters of the Third Kind; and historical context for sightings in the century and a half before the UFO era (when such sightings occurred even in the absence of a name for what was being seen).