On this day in movie history - Aliens (1986):

Aliens,

directed and written by James Cameron,

based on a story by James Cameron, David Giler and Walter Hill,

was released in the United States on July 18, 1986.
Music by James Horner.

Cast:
Sigourney Weaver, Carrie Henn, Michael Biehn, Paul Reiser, Lance Henriksen, Bill Paxton, William Hope, Jenette Goldstein, Al Matthews, Mark Rolston, Ricco Ross, Colette Hiller, Daniel Kash, Cynthia Dale Scott, Tip Tipping, Trevor Steedman, Paul Maxwell, Valerie Colgan, Alan Polonsky, Alibe Parsons, Blain Fairman, Barbara Coles, Carl Toop, John Lees, William Armstrong, Jay Benedict, Holly De Jong, Jill Goldston, Christopher Henn, Elizabeth Inglis, Mac McDonald, Stuart Milligan, Eddie Powell, Bob Sherman, Chris Webb, Tom Woodruff Jr.

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.

On this day in movie history - Alien 3 (1992):

Alien 3,

directed by David Fincher,

written by David Giler, Walter Hill and Larry Ferguson,

was released in the United States on May 22, 1992.
Music by Elliot Goldenthal.

Cast:
Sigourney Weaver, Charles S. Dutton, Charles Dance, Paul McGann, Brian Glover, Ralph Brown, Danny Webb, Christopher John Fields, Holt McCallany, Lance Henriksen, Christopher Fairbank, Carl Chase, Leon Herbert, Vincenzo Nicoli, Pete Postlethwaite, Paul Brennen, Clive Mantle, Peter Guinness, Deobia Oparei, Phil Davis, Niall Buggy, Hi Ching, Danielle Edmond, Tom Woodruff Jr.