The Martian is a science fiction novel written by Andy Weir. It tells the story of Mark Watney, an astronaut who is left stranded on Mars after his crew mistakenly believes he is dead. With limited supplies and no way to communicate with Earth, Watney must use his ingenuity and scientific knowledge to survive on the hostile planet. The Martian is a thrilling and scientifically accurate portrayal of survival in space, filled with humor and suspense.