Hyperion is a science fiction novel written by Dan Simmons. It is the first book in the Hyperion Cantos series, which blends elements of space opera, time travel, and mythology. The story follows a group of pilgrims who journey to the mysterious planet of Hyperion, each with their own reasons and secrets. Hyperion is praised for its richly developed characters, intricate plot, and exploration of themes such as destiny, artificial intelligence, and the nature of time.