I don't have a good source to immediately pull from for this response, but I find the interpretation of biblical angels really being aliens who present themselves to humanity fascinating. If there is intelligent life out there, there is no guarantee that it will look like us, or even hold a form we can understand. With angels approaching with "Do not be afraid" and their bodies being completely foreign to our own, there's speculation over whether the angels in the Bible could actually be aliens.
I can't say whether I find this to be an interpretation I agree with, but it's an interpretation I enjoy reading about regardless
EDIT: ay-o apparently there were two more pages to this thread I didn't even see my bad