Ancient Astronauts refers to the idea that extraterrestrial beings visited the Earth millions of years ago, and they helped to advance human civilization. Many supporters of this theory point to the greatest achievements of the human race like the pyramids of Egypt as signs of aliens having an influence over the Earth's early inhabitants. Many people also believe that the ancients confused aliens as being heavenly beings and have worshiped them as gods. One famous example of this theory is the belief that the Abrahamic God and his messengers are all actually aliens that have interacted with the early Jews. It's also believed that Jesus himself was actually the by-product of an extraterrestrial and a human woman.