I didn't downvote so I can only guess.
One possibility is that having "Alien", "UFO", and "the Buddha" all in the same sentence was unpopular. I thought that was unnecessary and unhelpful, so I removed it -- in case it was that which was attracting downvotes.
"Please inspect these images" is an imperative, it's commanding, giving an order. So just in case anyone resented your telling them what to do, I rephrased that as a neutral/simple question.
I also removed the uncessary formatting which makes text seem threatening and harder to read..... What's the matter, are you saying I'm too stupid to notice text unless it's black?
In other words, only some trivial changes to the presentation (not the content) of the question.
I didn't notice anything else wrong with the question.
I thought it was an 'iconography' question; and as you can see from this search this site doesn't get those questions often (so maybe some people might have thought the topic a bit strange).
Theoretically a question downvote should mean, "This question doesn't show any research effort. It is not clear or not useful." (though in practice people might downvote for any reason they feel like).
I personally also encourage questions requesting to relate specific Buddhist narratives with personal practice.
This doesn't seem to me to be a question about personal practice, i.e. I don't see how an answer to it could help someone to practice Buddhism ... if it were all useless theory and fuel for arguing with UFOlogists then what's the point? Maybe that's why it wasn't upvoted.
By the way if anyone does tell you why they downvote, then I recommend you (optionally) thank them for telling you and (definitely) not argue with them. Because, it's easy to downvote without leaving a comment, harder (but helpful, but time-consuming) to leave a comment, and if their explanation just exposes them to an argument then next time they have an incentive to downvote without a comment.
Sorry I can't really answer. :-)