In the original film, the crew of the mining ship Nostromo was awakened by the computer (called "Mother") when they passed within range of a planet with a moon designated LV-426. It was on this moon that the crew discovered the crashed alien (not "Alien") ship. This ship is where they found a petrified version of what is called an "Engineer" in Prometheus (and up until now, "the space jockey" in Alien) - a gigantic, semi-humanoid alien in a circular room seated in a large, central command chair. It was in a large chamber within this ship that hundreds of Xenomorph "eggs" were found.
Nicholas Cage Will Play… Nicholas Cage In New Movie