While audiences may never get another Sigourney Weaver-led Alien film, the star can be seen in other sci-fi projects like The ...

Science fiction often takes audiences across the galaxy, seeing unknown worlds and creatures. It's typically a way to escape from reality and see something amazing — until the extraterrestrials invade ...

A look at 10 of the greatest alien sci-fi movies, from Ridley Scott's Alien to Denis Villeneuve's Arrival, none by Steven Spielberg.