I agree with Warthog. The bible never says that there are two and only two types of sentinent creatures. In fact, I think if you look at the living beasts/creatures/beings of Revelations 4 that are around the throne, and praise God, they don’t seem to fit either category of angels or man.
The strongest argument that I see for there not being alien life, is that the history of the world and universe appears tied to human history. In Genesis, the stars were created for the earth, not vice versa. In the Old Testament and in Revelations, the destruction and recreation of the universe appears tied to human history and judgement.
Is that to say that God could not have created another sentinent creature whose history he has also managed to time or before the destruction of the universe. No, he could have. I just think it’s doubtful.
In that respect, I agree with esquirette, that UFO sightings may well be the sighting of angelic vehicles similar to the “Wheels within wheels” chariot that one of the Old Testament prophets saw. And whether those angels are fallen or not, can’t tell.
Well said. I think your point about the other beings described in Revelation is interesting.
That seems a ridiculous stretch...