I'm also really curious to see the fallout in all the religions around the world. Books and movies could be made about this alone.
They would simply claim that God made the whole universe and everything in it, just as they do now. Since God is the name of their god, they can simply say that whatever god the aliens worship is the same god as their god.
If the aliens worship no god, there will be no dispute. It will be no different than atheists on earth.
Were you hoping for some big revelation?
I don't think you are taking everything into account here, it's not a matter of us and the aliens worshiping different gods or anything.
Alien life might actually disprove many things, stuff like 'the bible' says, and people wouldn't like that
. Like us being made in God's image, and the fact humanity believes itself to be the endall of everything; the center of the universe. It's a concept worse in some religions then others, and I was just curious what those particular anthropocentric religions would do if there was now tangible, real opposition to everything they believe; things they couldn't just argue