Just a thought, here. If we encountered extra-terrestrial intelligent life, they would be straightaway introduced to our Babel of religious attitudes and beliefs - our whole bewildering tableau of crosses, crescents, prayer wheels, yin and yang, etc. What about their religious traditions? What would they be like?
Some of my fellow nonbelievers here may figure that any civilization advanced enough to visit us would not have religion. But that I think is just too optimistic - experience shows that the 'regime of truth' is something that is highly 'overdetermined' by the great variety of discourse paradigms. Not only can multiple, internally coherent interpretations of "the same" phenomena be adduced, but all phenomena seem to be theory-laden. There are really no "brute facts" that we can appeal to, without them being embedded, at least tacitly, in a theory of the world.
Look, for example, at how the Swami here effortlessly shifts between (what Westerners would recognize as) the different discourses of mysticism and physics; and in ways that purport to describe the world, but that are not falsifiable. Couldn't his kind of worldview be espoused by an alien homo sapiens sapiens species? What other kind of spiritual/nonempirical worldviews might such a species of intelligent aliens come up with?
If aliens had their own scriptures, what would they be like? Or their own religious symbols - ? Their own theologies? If you are a believer, how would you respond if you saw actually familiar religious iconography - like the sign of a cross - but attached to a belief system that bore no resemblance to Christianity?
If you are a non-believer, would the existence of religion even amongst intelligent beings with vastly superior technology, make you rethink the validity of non-belief?