Aliens make for good sci-fi film fodder, but sometimes, they can also terrify audiences in horror films. These are the best horror movies about aliens.

In space, no one can hear you scream. But in the best space horror movies of all time, there's plenty of audible screaming ...

It's broadly regarded as one of the finest horror films ever created, which might seem peculiar given its spaceship setting, but Alien from 1979 established the benchmark for big-screen monsters. This ...