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Earth -> Mars trade is going to be "almost everything" for a while, with emphasis on things that can't be done on Mars. Over time as corporations begin to develop Mars, heavy equipment and thin...
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#1: Attribution notice removed
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System
·
2021-03-30T23:53:21Z (over 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/28248 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/