What have the cast of ‘Alien’ been doing since the Nostromo first encountered the Xenomorph? Sigourney Weaver played Ellen ...

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.

Add Yahoo as a preferred source to see more of our stories on Google. Some of the greatest sci-fi movies of all time revolve around humans in a desperate struggle for survival. Sometimes we’re ...