A Space Elevator in less than 7 years
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Subject | Topic Starter | Replies | Views | Last Post |
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Shades of Arthur C Clarke | Ridcully | 23 | 2,420 | Jul 13, 2011 1:07 PM |
Structured freedom | penguinist | 4 | 1,924 | Jul 10, 2011 1:01 PM |
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