Starship Troopers, written by Robert A. Heinlein, is a classic space war science fiction novel. Set in a future where humanity is at war with a highly advanced insectoid species known as the 'Bugs,' the story follows Juan 'Johnny' Rico as he joins the Mobile Infantry to fight against the alien threat. Starship Troopers explores themes of military service, duty, and the ethics of war, making it a compelling read for fans of space war science fiction.