The X-Files had a long alien conspiracy theory mythology, but some of its best episodes were Monster of the Week.

A "diverse" spin-off is in the works of the Emmy-winning sci-fi hit about FBI agents who investigate unexplained phenomenon.

Steven Spielberg returns to sci-fi and summer blockbusters with his upcoming movie about aliens, 'Disclosure Day.' ...

The Darkest Hour, a sci-fi film starring Emile Hirsch, throws Moscow into chaos as an invisible extraterrestrial invasion ...