Dune is a science fiction novel written by Frank Herbert. It is set in a distant future where interstellar travel and advanced technology exist. The story follows Paul Atreides, a young nobleman who becomes the messiah-like figure of a desert planet called Arrakis. The planet is the only source of a valuable spice called melange, which grants heightened awareness and longevity. Dune explores themes of power, religion, and ecology. The book is known for its intricate world-building and complex characters.