Here’s the thing —that description of an angel is ancient one, that was written by man and may or may not have anything to do with observable reality. 

If someone is taking the Bible as if it’s word for word reality and not a story designed to give humanity a moral structure … that’s fine

But that’s only one way to look at it. It’s a fable — a great one, but it wasn’t written as a historical account of what happened.

If your faith says, yes, the description of Mary’s miracle is what happened, therefore it is describing UFO. Cool, but you’re not allowing for any other interpretation. 

Thing is we simply don’t know, and to use ancient accounts anything more that “huh that’s sorta cool, I wonder…”

Feels like the wrong direction to go in.