Are they out there? The many movies and TV shows about aliens tell us that people continue to be extremely interested in the possibility of extraterrestrial life. This entertaining yet thoughtful volume presents information about aliens and UFOs through personal and historical accounts as well as possible scientific explanations for supposed encounters. Thought-provoking sidebars and fact boxes and vivid images will keep even the most reluctant readers interested. They'll be able to decide for themselves about the title's query based on the evidence presented.