The theory that the Nazis have escaped into outer space (common locations are Aldebaran or The Dark Side of the Moon) exists in real life. The theory has it that the Nazis went to Neuschwabenland - a region in Antarctica - and terraformed that during WWII. There, they built not only a secret base but also Reichsflugscheiben, which are flying saucers in the service of the Reich. The Nazis used those flying machines to escape Earth. Similar theories include that Hitler went to the Aryans on Aldebaran and was made immortal.