Throughout history people have told stories of strange objects in the skies. More recently the notion of space travel and aliens has been popularized through real world events, blockbuster movies and TV shows. Despite all attempts to dismiss UFO and alien sightings as illusions or hoaxes, there is much that remains beyond our understanding. Combining superb illustrations and lively text from an award-winning author, this book will take young readers on an amazing interactive journey into the bizarre world of the unexplained.