It may be 1 movie or a combination of 2 or more. I would have watched this movie somewhere in the 60's or 70's.
The plot follows astronauts that go to the moon and, while there, discover a disabled alien craft that needs to be repaired. The aliens, who look human, need the assistance of the astronauts so the aliens help the astronauts get back to earth so they can get the parts they need to fix their craft.
The aliens craft was a large round shape and I believe there were robots/androids also inside the alien craft.