The commercial towing spaceship Nostromo is on a return trip from Thedus to Earth, hauling a refinery and twenty million tons of mineral ore and carrying its seven-member crew in stasis. Upon receiving a transmission of unknown origin from a nearby planetoid, the ship's computer awakens the crew.In the script and film the computer is referred to by the crew members as "Mother". An October 1979 issue of Fantastic Films magazine, as well as the back of the 1980 Fox videodisk of the film, explain that "Mother" is an abbreviation for "MU/TH/UR 6000", the model of the computer. The chapter list for Alien in the 2003 Alien Quadrilogy DVD set also lists it as "MU/TH/UR". The 1997 sequel Alien Resurrection, the fourth film in the series, echoed this element by having the crew of the Auriga refer to the ship's onboard computer as "Father." McIntee, 25, 119. Acting on orders from their corporate employers, the crew lands the Nostromo on the planetoid, resulting in some damage to the ship. Captain Dallas (Tom Skerritt), Executive Officer Kane (John Hurt), and Navigator Lambert (Veronica Cartwright) set out to investigate the signal's source while Warrant Officer Ripley (Sigourney Weaver), Science Officer Ash (Ian Holm), and Engineers Brett (Harry Dean Stanton) and Parker (Yaphet Kotto) stay behind to monitor their progress and make repairs.