For anyone interested in Ancient Astronaut Theory, you have got to read this book: Humanity: The Alien Project - An Ancient Astronaut Theory by Vincenzo Macrino. I cannot recommend it enough. It totally blew me away. I watch Ancient Aliens, listen to Coast to Coast, read Sitchin and von Daniken but this book really lays it out with some pretty fascinating facts. Here is a link to where u can get it.
Author also has a website: