Moon is a 2009 science fiction movie, directed by Duncan Jones and starring Sam Rockwell as astronaut Sam Bell, and Kevin Spacey as the voice of "Gerty".
It is the near future. Astronaut Sam Bell is living on the far side of the moon, completing a three-year contract with Lunar Industries to mine Earth's primary source of energy, Helium-3. It is a lonely job, made harder by a broken satellite that allows no live communications home. Taped messages are all Sam can send and receive.