Sci-fi can cover a broad range of stories. There are daring, high-end space adventures with futuristic tech like Star Wars, utopian journeys seeking new life and civilizations like Star Trek, and gritty, grounded tales that focus on the grimmer parts of humanity. Blade Runner offered a morality story about replicants, while Alien introduced class struggle, corruption, and one of cinema’s scariest lifeforms: xenomorphs.