The Hitchhiker's Guide to the Galaxy, written by Douglas Adams, is a hilarious science fiction novel that follows the misadventures of Arthur Dent, an ordinary human who is swept away on a cosmic journey after Earth is destroyed to make way for a hyperspace bypass. With the help of his alien friend Ford Prefect and the titular guidebook, Arthur encounters a series of bizarre and comedic situations across the universe. The Hitchhiker's Guide to the Galaxy is a witty and irreverent exploration of alien mysteries and a beloved classic in the science fiction genre.