There are many people, some scientists included, who believe firmly that our civilization as we know it was influenced by ancient encounters with extraterrestrial life. In 1966 a book entitled "Intelligent Life in the Universe" was published. It was written by two astrophysicists named I.S. Shklovski and Carl Sagan. It stated that "scientists and historians should seriously consider the possibility that extraterrestrial contact occurred during recorded history. The scientists argued that "sub-light speed interstellar travel by extraterrestrial life was a certainty when considering technologies that were established or feasible in the late '60s that repeated instances of extraterrestrial visitation to Earth were plausible" This of course, sparked much controversy.
Some argue that evidence of this ancient occurrence is right in front of our faces, in the form of The Great Pyramids, The Nazca Lines, Stonehenge and More. Claims are that some of these structures could not even be reproduced today and that these cultures were simply incapable of constructing these alone. In addition, most of these wondrous structures seem to be directly correlated with astronomy and the position of stars, planets etc. Many of these structures and images share striking similarities, although they were being created at different locations on the planet, where communication between the different builders would have been impossible. It is also interesting to point out that the Great Pyramid of Giza id built at the exact center of all landmass on Earth. Could they have all been inspired by the same thing? Did Real Alien visitors or Ancient Astronauts help to mold our civilization? Below is a video showing modern day tribes in isolation and their reactions when confronted with a technologically advanced civilization and another showing many examples of what are believed to be ancient representations of extraterrestrial life. Very interesting stuff.
Ancient Astronauts - Aliens, Extraterrestrials -