: The film is famous for its patient pacing. The first hour is dedicated almost entirely to world-building and tension-setting, making the eventual explosion of violence (the infamous "Chestburster" scene) far more impactful.
: The tagline "In space no one can hear you scream" perfectly encapsulates the film's focus on the helplessness of being stranded millions of miles from civilization.
: Ellen Ripley (played by Sigourney Weaver) broke the mold for female protagonists. She wasn't just a survivor; she was the most competent, logical member of the crew, adhering to protocol while others let emotion or curiosity dictate their actions.
Your file's "1080p" designation indicates a High Definition presentation. This is particularly significant for Alien due to its intricate production design: