As today is Alien Day - in reference to LV-426, the planet where the original film and James Cameron's sequel is set - we're going through some of the trivia from the 1979 classic.

Originally titled Star Beast, the film was an instant smash and garnered close to over $200 million in earnings. The film also acted as launchpad for the career of both Sigourney Weaver and director Ridley Scott, and defined the sci-fi horror genre for years to come.

Here's thirteen of the most interesting tidbits of trivia we've found online.