This episode offers an extensive overview of Erich von Däniken's Ancient Astronaut Theory, which posits that ancient deities were extraterrestrial beings who visited Earth in prehistoric times and influenced human technology and culture. Däniken argues that ancient structures, like the Egyptian pyramids and Nazca Lines, were either built by these "spacemen" or by humans using knowledge imparted by them. The texts highlight the immense popularity of his 1968 book, 'Chariots of the Gods?', which was translated into numerous languages and argued that figures described in religious texts, including the Bible and Hindu epics, were actually highly advanced alien visitors. Furthermore, the sources explore Däniken’s claims that these extraterrestrials left behind artifacts, established colonies, and even engaged in interbreeding with humans, suggesting they will return to Earth.