The Hitchhiker's Guide to the Galaxy, written by Douglas Adams, is a humorous space novel for young adults. The story follows the misadventures of Arthur Dent, an ordinary human who is swept off Earth just before its destruction to make way for a hyperspace bypass. Arthur finds himself on a journey across the galaxy, encountering eccentric characters and mind-boggling situations. This witty and satirical book combines science fiction with comedy, offering a unique and entertaining perspective on space travel and the meaning of life.