There is nothing against natural reason about the possible existence of ETs, but the debate is … whether divine revelation seems to disqualify it. It definitely does not do it explicitly. Now, I’m not talking about ETs in terms of animal or vegetative life … nor am I talking about angels (so let’s not bring that up) … I’m talking about rational animals … that is, naturally corporeal creatures with intellectual faculties. If such creatures besides us are like that, then by definition they are made in the image of God and would have the equivalent of human dignity.
It seems to me that one of the main issues to be discussed is this: If aliens are not descended from Adam and Eve, what would Jesus Christ mean to them? Obviously, it’s possible that they could be unfallen, but if they are fallen (perhaps more likely?) would Jesus work as their savior? Or would it be necessary for a separate incarnation of God into their species (by the way, God can become incarnate more than once … I’ll give you the Summa Theologica quote for those who disagree). Augustine, I believe, said that if Christ had not descended from Adam but became incarnate out of nowhere (without being born) that His grace would not apply to us. If he’s right, then aliens would need a separate savior (but it would be the same God, of course, just with a different case of created nature).
Some of the potential theological problems/questions one runs into would be the following:
- Is Christ really still the king of all creation, if Christ’s grace does not apply to them?
- When “all creation fell” with Adam’s sin, did the aliens fall too? (obviously not, because that would involve forcing their free will)
- Would there be stewards of creation besides humans? (or were we just given stewardship of the earth?)
- What do we do about Mary??? If she is the queen of Heaven, doesn’t that imply there are no other queens of heaven? (or perhaps different alien reproductive processes take care of that mess)
Some things that may seem like problems (but I don’t think are) would be:
- The aliens would have a completely separate Church, both physically and mystically, since the Church is the Body of Christ, and their Church would be the Body of … whatever their savior would be (in a sense, they would have a different religion … but still a true one)
- They would have a separate divine revelation, with a separate theological virtue of faith … unless of course, their divine revelation includes ours somehow (and perhaps has more than ours; maybe they know all the names of the archangels, for example)
- They would have a different Pope if one at all
Other speculation:
- Baptism in the name of the Father, Son, and Holy Spirit may be a sacrament shared by the Alien Church since it involves invoking the Trinity and not specifically Christ, who would only be relevant to humanity
- They may have some crazy other sacraments that give unique graces we may never get
- Perhaps their divinely ordained mission and revelation is to assist humans in a primarily unseen manner, similar to angels, but being able to relate to humans more, due to their corporeal nature
This stuff is nice to think about. It exercises theological muscles that are normally dormant and can assist one in learning more thoroughly at theological principles.
Personally, I have no idea if aliens exist. I’ve listened to a lot of ex-Area 51 employee interviews and they sound very convincing … but who knows, it could be government misinformation or something. Also, alien sighting could be the result of demonic illusions “trying to confuse us” and that might seem convincing with all the new-age religions based on aliens, like Scientology. I heard at one point (though I don’t know if it’s true) that the most UFO sightings in the world happen above Israel and the Vatican. There might be some supernatural connection.
For what it’s worth, the former Vatican exorcist (he passed away) name Corrado Balducci firmly believed in the existence of aliens, due to the abounding reports of alien abduction. He also said that aliens were not angelic or demonic manifestations either. That might stand for something, considering he is the Vatican exorcist.