 Grunschloss maintains that most of the Ashtar millenarian concepts involve a transformation of human beings, via these technologies, who will then return to the planet Earth to enjoy a golden millennium.Later, with the failure of these prophecies, teachings were modified to include a less material and more spiritual emphasis.In 1971, a British radio talk show devoted to UFOs received a strange call-in claiming to originate from outer space, which some of the guests believed to be genuine.