The remaining crew decides to self-destruct Nostromo and escape in the shuttle.While Ripley is absent, Parker and Lambert are killed by the creature as they gather supplies.

Inside, they find the remains of a giant extraterrestrial navigator frozen in its chair.Ripley deciphers part of the transmission, determining it's a warning.Inside the derelict ship, Kane discovers a chamber containing hundreds of large egg-like objects.When he touches one, it opens and a creature springs out and attaches itself to his head, going through the facemask of his helmet.During a final crew meal before returning to stasis, he chokes and convulses, then dies as a small alien creature bursts from his chest and escapes into the ship.

The crew attempts to locate it with tracking devices and capture or kill it with nets, electric prods and flamethrowers.It also launched Weaver's acting career, providing her with her first lead role. A prequel series includes Prometheus (2012) and Alien: Covenant (2017).The story of her character Ellen Ripley's encounters with the Alien creatures became the thematic and narrative core of the sequels Aliens (1986), Alien 3 (1992) and Alien Resurrection (1997). The commercial space tug Nostromo is on a return trip to Earth with a seven-member crew in stasis, Captain Dallas (Tom Skerritt), Executive Officer Kane (John Hurt), Warrant Officer Ripley (Sigourney Weaver), Navigator Lambert (Veronica Cartwright), Science Officer Ash (Ian Holm) and two Engineers, Parker (Yaphet Kotto) and Brett (Harry Dean Stanton).Dallas enters the ducts, intending to force the alien into an airlock, but it ambushes him.Lambert implores the others to abandon ship and escape in its small shuttle.In 2002, Alien was deemed "culturally, historically or aesthetically significant" by the Library of Congress and was selected for preservation in the United States National Film Registry.