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On a planet the size of Earth, or a few Earths, it seems the habitable zone should be large enough to develop a major civilization, no?
by svachalek 8y ago
On a planet the size of Earth, or a few Earths, it seems the habitable zone should be large enough to develop a major civilization, no?
- macintux 8y agoNo idea. It just seems based on our own experience that resources aren't likely to be evenly distributed.