This, according to some estimate, give or take quite a few zeroes I'm sure. A deeper philosophical question which goes beyond theology, though it certainly entangles it. So, this number again, 1000000000000000000000 planets! According to The Institute of Astronomy at University of Cambridge. How many solar systems are there? | Institute of Astronomy Putting the exact estimation aside. We would have to take a massive leap of faith to think that not only is there NOT other life in the universe, but, also of such existences, that there aren't many far more advanced than us. Imagine a planet the size of Jupiter, 100's of billions of citizens. Imagine them not having our reptilian instincts of rage and violence, or developing weapons of war to be used against each other. Consider if they had the average brain power 250x that of our smartest humans, and existed for much longer, maybe lived on average 10000 years. What would be the end result? Is there any religion that makes any consideration for this possibility (outside, I think Scientology)? It really is a daunting concept. We could be the most advanced by far, we might be Gods great creation. It would hardly seem we could be alone though based on the odds and even plain randomness.