Intelligent life forms visited Earth thousands of years ago, bringing with them technology that drastically affected the course of history and human development? The theory of "ancient aliens", published in 1968 in the best-selling book by Erich von Däniken "Chariots of the Gods", has shaken people's ideas about the proverbial human progress.
Where did the cave drawings of strange creatures, remains of landing strips in Peru, and Indian texts that describe the "flying machines of the gods", etc. Is it possible that ancient aliens were well known to our ancestors or is it just a mystery story?
Watch Mission unknown / Ancient Aliens Part 1
Watch Mission unknown / Ancient Aliens Part 2
Watch Mission unknown / Ancient Aliens Part 3