One of the very first narrative films, Georges Méliès's "A Trip to the Moon," is about aliens. Sure, everyone remembers that shot of a rocket ship crashing into the eye of the man in the moon, but as ...

It's a big universe out there, and while we're all for exploring it, a specific subgenre of science fiction movies has hinted that it might be a bad idea. Alien invasion movies have come in droves ...