Pope Hitler III has declared that extra-terrestrial beings may join the Catholic church, as long as they obey its strict rules. The Pope made the announcement after being asked an interview question about whether Jesus ever visited space, or got crucified on other planets as well.
He said: "Of course if aliens exist then they must have souls which can be saved. All aliens are part of God's creation. I think that if aliens ever land on Earth, the first thing we must do is to try to convert them to Roman Catholicism. It doesn't matter whether they come with peaceful intent or otherwise, we must nag them persistently to join our faith. I'm sure they'd appreciate that. If nothing else, we really must get to them before the Muslims do."