On August 17, 1979, the science-fiction horror film "Alien" was released in the United Kingdom, following its June release in the United States. Directed by Ridley Scott and starring Sigourney Weaver, Tom Skerritt, and John Hurt, the film tells the story of the crew of the commercial space tug Nostromo, who encounter a deadly alien creature that stalks and kills them one by one.

"Alien" was a groundbreaking film in many ways. It introduced the iconic xenomorph creature, designed by Swiss artist H.R. Giger, which has since become a staple of science-fiction horror. The film's tagline, "In space, no one can hear you scream," perfectly encapsulated the isolating terror of facing a deadly threat in the vast emptiness of space.

Sigourney Weaver's portrayal of Ellen Ripley, the tough and resourceful protagonist, was also a landmark in science-fiction cinema. Ripley was one of the first female action heroes in a major Hollywood film, paving the way for future strong female characters in the genre.

The film's success spawned a franchise that includes three direct sequels (Aliens, Alien 3, and Alien Resurrection), two prequel films (Prometheus and Alien: Covenant), and various crossovers with the Predator franchise.

"Alien" was praised for its suspenseful direction, atmospheric visual style, and strong performances. It won the Academy Award for Best Visual Effects and was inducted into the National Film Registry of the Library of Congress in 2002 for being "culturally, historically, or aesthetically significant."