Imagine that some time in the future we manage to communicate, meaningfully, with aliens from other worlds. Would they be religious, like humans? Some might be religious. Of the ones that are religious, would they be Christians ? If so, would they be Catholic or Protestant? If Protestant, would they be Baptist or Anglican? If Anglican, would they be USA Anglican or UK Anglican? Probably not. Your religion largely depends on where you live, what your parents believe and who you've met. You may have been brought up in a particular faith or been converted. It's not likely that you chose your faith after studying the pros and cons of all the living religions. It's unlikely that the aliens will know anything about Jesus, Mohammad, Buddha, Sadafaldeo or Monty Python. For more, see https://en.wikipedia.org/wiki/List_of_founders_of_religious_traditions However, the aliens might easily be non-religious, because anything else requires specific indoctrination. Of all the religious positions, only non-religious is Universal.