What if an alien generation ship approaches the solar system? Replying to: Unless there's justification4space mining&breakthro in propulsion,space economy -- ChairmanMaohamet Post ReplyForum -Corsair- 12/24/2019, 22:09:52 Author Profile | Edit Recommend | Alert | 5 4 3 2 1 0 -1 -2 -3 -4 -5 Where am IGo Up Go TopPost ReplyBack

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