it came from outer space 3D (1954)

aka Atomic Monster. Strangers from Outer Space. The Meteor.
A couple see a meteor crash near their desert home, but when the man investigates he finds its actually a spaceship. They try to inform the authorities, but no one seems to be interested. This changes when people start going missing, and when they return acting strangely.
A great example of 50's sci-fi on all levels, everything from the score (by an uncredited Henry Mancini), to the pervasive sense of cold war paranoia. This was the 3-D version, which adds nothing to the story, but occasionally adds to the theatrics of events, especially the rockfall. Great film in 2 or 3D.