Mainstream SETI scientists and ancient alien theorists don't agree on much, but one opinion they share is that the undisputed authority on the possibility of alien existence was the late Carl Sagan (1934-1996), whose voluminous writings on the subject have had a profound influence on ETI research.
The ultimate guide to Project Blue Book by one of the lead astronomers for the US Air Force program to investigate UFO sightings-and featured in History Channel's Project Blue Book.
"e;The famous 1961 Betty and Barney Hill abduction by non-humans is taken apart, meticulously re-examined by Betty's niece Kathleen Marden and nuclear physicist Stanton T.
In 1945, the Japanese cities of Hiroshima and Nagasaki became the first and last victims of the atom bomb, the most destructive man-made force our planet has ever known.
Bestselling author and father of the Ancient Alien Theory Erich von Daniken explores what drove ancient humans to build city-sized places underground around the world and its connection to conflicts in the sky.
"e;Starting from the Old Testament these pages address the story of what is often not highlighted or, worse, deliberately forgotten or interpreted differently in order to conceal the potential disruptive effects.