Quite a bit of movie magic made "Alien" the sci-fi horror classic it is -- but one of its biggest challenges was solved with a simple low-tech tactic.

Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

The creators of the Alien franchise probably have no shortage of ideas for where the series should go, but here are some more ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.