Only humans are fallen. Satan was thrown from the heavens down to earth. Evil is here. They do not understand evil. They are afraid of this place or are not allowed to come here. Read C.S. Lewis’ space trilogy and you will understand, if in fact they do exist. I’m open to it, but don’t think about it much. I concentrate on the Return of the Great King. Maybe then they’ll be able to visit without us killing them.
Huh? Where'd you get that from?
Check out the Gen 6 or Jude 1:6 or the Book of Enoch (Ethiopian).