Is it possible that aliens exist? If so, why didn’t God mention them? Would it really rattle people’s faith if they did exist?

The Christian Research Institute says that although 80% of all UFO sightings can be easily attributed to natural causes, almost half the American public believes in extra-terrestrials. You would think that this support would come through evidence but there is no hard or conclusive evidence to confirm the existence of aliens. So I would say the possibility that aliens exist is not very probable. If they don’t exist, this explains why the Bible does not mention them. But, if they do exist the question becomes “does it matter?” The Bible is the revelation from God to humanity (human beings). When Jesus came to earth and lived among us, he came as a fellow human being. His sacrificial death provides a way for human beings to become reconciled with God. So, regarding our faith, aliens should not be a factor.