I dont know if anyone has ever read this book and im not sure who the author is but It takes instances in the bible and other holy books and describes how the "Gods" could have been space travelers coming to earth and breeding with us. This sounds like a far fetched idea...but they came at it with a scientific base. It says that when "God" would come down from the heavens it would be in a firey blaze, with flames coming out of all sides. Also it gives a good reason why people beleived there were half human half gods. It would be that the aliens would interbreed with us and the babys were thought to be Half Gods.
I say this out of curiousity of what others think, i myself believe in God. I guess im more agnostic but i lean more toward christianity, i will say i dont believe in alot that they say but whatever.