Not every alien is trying to invade Earth, but if you're looking for the thrills and danger of an alien invasion, you can't go wrong with these titles.

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 ...

Everything you need to know about watching the "Alien" movies chronologically and in release order online.