Are we alone? How unique is our Earth?
Should the hunt for life beyond Earth uncover a multitude of habitable worlds and few (if any) inhabited ones, humanity would begin to understand just how lonely and fragile our situation is. On the other hand, if our hunt yields a true diversity of inhabited worlds, then we would learn something fundamental about the commonality of life in the cosmos.
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Echoes of Time v2 by Kevin MacLeod is licensed under a Creative Commons Attribution license (/)
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