The War of the Worlds is a science fiction novel by H.G. Wells. It tells the story of an alien invasion of Earth and the struggle of humanity to survive. The book explores themes of imperialism, evolution, and the vulnerability of human civilization. Wells' writing is known for its vivid descriptions and realistic portrayal of the chaos and destruction caused by the alien invasion. The War of the Worlds has had a significant influence on the science fiction genre and remains a classic of the genre.