The ancient extraterrestrial hypothesis developed from centuries-old theory that life is present on other planets and that humanity and extraterrestrials have crossed paths before. The theme of human-alien relationship was pushed to the forefront in the 1960s, influenced by a trend of UFO sightings and popular films like 2001- A Space Odyssey.
The space program also played a role: If mankind could go to other planets, why not a visit by extraterrestrials to Earth?
The Swiss author Erich von published-Chariots of the Gods in 1968, which became an instant bestseller.
Inside, put his theory that thousands of years ago, visitors to the different planets space traveled to Earth, where humans trained in technology and influenced the early beliefs.
It is considered by many as the father of the theory of Ancient Aliens, is also considered as the Ancient Astronaut theory. Most defenders of the Ancient Aliens, including von , point to two types of evidence to support their ideas. The first is ancient religious texts in which humanity lives and interacts with gods or other heavenly beings that descend from the sky very often in vehicles similar to spaceships-and possess incredible powers.
The second is physical specimens such as artwork showing alien forms and architectural marvels like Stonehenge and the pyramids of Egypt. If aliens traveled to Earth in the past, could pay us a visit in the future? For ancient alien theorists, the answer is an undeniable yes.
They think that, by spreading their views with the world, can prepare future generations for the inevitable encounter waiting.