Over four decades, the Alien franchise has brought many different versions of the xenomorph creature to theaters.

Aliens have long held a place in the heart of cinema. Invading the sci-fi, horror, and comedy genres, they have been ...

Underrated efforts like Moon and straight-up masterpieces like Children of Men are among the sci-fi movies from the 2000s that have aged the best.

Ridley Scott's Alien is widely considered the ultimate sci-fi horror movie, but a few genre films, like The Fly and The Thing, are even better.

The sci-fi genre has been home to some incredible movies about war -- usually with invaders from space -- and these five are ...