With the plethora of planets out there there have to be many that could support life. Given that, it's a small leap to imagine that there are other worlds in which intelligence has developed. It would be fascinating to know how these would have developed differently than us. As we learn more about our own world we're amazed at the forms that life has taken and under what circumstances it thrives. It would be myopic to believe that similar development hasn't occurred off world.
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