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Alien is a 1979 science-fiction horror film directed by ridley scott and written by dan obannon, based on a story by obannon … With tom skerritt, sigourney weaver, veronica cartwright, harry dean stanton. Directed by ridley scott. · in space, no one can hear you scream, but they can sure hear you scratching your head as you try to make … · from prometheus to alien: Romulus, heres how to watch all seven alien movies in order before starting the … · watch all alien movies in order with our comprehensive list, from the 1979 original to romulus, and including …