Proponents of ancient astronaut theories often maintain that humans are either descendants or creations of beings who landed on Earth thousands of years ago. The most popular theory is that human knowledge, religion, and culture came from extraterrestrial visitors in ancient times. Ancient astronauts have been widely used as a plot device in science fiction, but the idea that ancient astronauts actually existed is not taken seriously by most academics.
Arguments can be made that the evidence for ancient astronauts comes from supposed gaps in historical and archaeological records, and they also maintain that absent or incomplete explanations of historical or archaeological data point to the existence of ancient astronauts. The evidence is said to include archaeological artifacts that are beyond the presumed technical capabilities of the historical cultures with which they are associated. This also includes artwork and legends that are interpreted as depicting extraterrestrial contact or technologies.
Notwithstanding these contentions, let us say that there is an axiom to the ancient astronaut theory. Then we need to ask, who were these beings? What did they represent to the inhabitants of earth? Where these beings the ancient Gods of antiquity?……Full Article Source