Well one interesting way to look at all this is our tendency historically to believe in Gods and see them as beings that live in the sky or heavens or space. Why would we think that? Wouldn't it make more sense that if Gods or a God created us and this planet that he or they would dwell here as well? It would seem to make more sense that we think Gods or God live in the sky because at points in our past aliens visited here and that being so much more advanced then we are we percieved them as Gods.