If you were to believe Nasa's records, then that would be that, but in April 2007, an individual with the username "Retiredafb" uploaded several videos to YouTube claiming that they were footage from Apollo 20, a secret joint American-Soviet space mission from August 1976.
The user identified himself as William Rutledge, 78, a former astronaut now living in Rwanda.
His videos show what seems to be the cabin of Apollo 20, as well as footage, supposedly on the moon, of a mysterious lunar city, as well as the corpse of what seems to be an alien girl that internet users call "Mona Lisa", lying in the cabin.
