Colossians 1:16 For by him all things were created, in the heavens and on the earth, things visible and things invisible, whether thrones or dominions or principalities or powers; all things have been created through him, and for him.
if aliens exist, they would be something in "the heavens", or "sky".
the Bible doesn't say that God created the Aurora Borealis, either.
one reason for that is probably because people in the Middle East can't see the Auroras.
but I think it would be a mistake to conclude that therefore they come from Satan.
same thing would be true with aliens.
if they exist, it would be because God created them.
my brother, that's a pretty big stretch, imo, to go from the pope speculating about the possibility of aliens and how they would fit in his theology to saying he works for them.
anyways, a lot of Protestants accept the possibility of aliens, so it's hardly a "Catholic vs Protestant" issue.
So Paul got to his feet in the middle of their council, and began, “Gentlemen of Athens, my own eyes tell me that you are in all respects an extremely religious people. For as I made my way here and looked at your shrines I noticed one altar (one of a number in Athens) on which were inscribed the words, TO GOD THE UNKNOWN. It is this God whom you are worshipping in ignorance that I am here to proclaim to you!
https://www.biblegateway.com/passage/?search=Acts 17:22-24&version=PHILLIPS
Paul know true God is Jesus, and Jesus teach people not to worship idol, whosoever worship idol not worship jesus
do you honestly believe that Paul did not proclaim the true God to them?
I don't think you do, since you believe the Bible.