This isn't aliens but is ancient civs. I was going to post this in the Atheism vs Theism thread but maybe it would be more appreciated here. Two parts.
1) Fall of Civilizations doc about the Sumerians. Very high quality. Purely archaeological/historical, no paranormal stuff in it. But it provides background for the next part.
2) Lord of Spirits podcast - From Ur of the Chaldeans. Also historical but mixed with what I guess you could call paranormal.
The great Biblical patriarch Abraham began his life in the shadow of the sacrificial ziggurat of Ur, dedicated to a pagan moon god. What does it mean that God called him out of that context, why did God direct Abraham's gaze to the stars, and why did Abraham bring his son Isaac to the top of a mountain? Fr. Stephen De Young and Fr. Andrew Stephen Damick focus on this towering Biblical figure, this father of all the faithful.
I'm not sure what to think of UFOs but I think spirits are real and make better sense of what ancient civs were encountering. Is that alright in this thread? If not I will fuck off lol.