On this day in movie history - Alien (1979):

Alien,

directed by Ridley Scott,

written by Dan O'Bannon,

based on a story by Dan O'Bannon and Ronald Shusett,

was released in the United States on May 25, 1979.
Music by Jerry Goldsmith.

Cast:
Sigourney Weaver, Tom Skerritt, Veronica Cartwright, Harry Dean Stanton, John Hurt, Ian Holm, Yaphet Kotto, Bolaji Badejo, Helen Horton, Eddie Powell.