There may be millions of life giving planets out there. But the distances are too great. We're just now getting information about stars coming in to being 13 billion years ago. I doubt we will ever be able to travel fast enough to get anywhere with life and likewise for other civilizations. Even when an exo-planet looks great for life, as far as we can even begin to know this it's ONLY 1000 light years away, so we're still never going to get there. We aren't going to develop warp drive. And they won't be able to get here either. While there could be thousands or more civilizations out there, they won't see us and we won't see them.

 

 

 

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