I Have recently been putting some thought into the idea that aliens may have visited our early ancient civilizations (i.e. ancient Egyptians, Mayans, etc.) and i was simply wondering how other people felt on it. Think its rediculous, strongly believe in it. Please explain. Also if you have any cites that have any information about it, for instance examples in which this idea might have taken plave or examples of such. Please write anything and everything.