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When we build our own colonies, we can do them in near-Earth vicinity, because people are going to want to come back to Earth. Very few people - for a long time, anyway - are going to want to abandon Earth altogether.
When we build our own colonies, we can do them in near-Earth vicinity, because people are going to want to come back to Earth. Very few people - for a long time, anyway - are going to want to abandon Earth altogether.
