The Martian is a gripping science fiction novel written by Andy Weir. It tells the story of astronaut Mark Watney, 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 resourcefulness to survive on the harsh and desolate planet. The book is a thrilling and realistic portrayal of the challenges of space exploration and the resilience of the human spirit.