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SF (non-Military) Question of the Day!	by Illiad	2007-05-18 00:01:48
Depends how you count space elevators	by admeralthrawn	2007-05-18 00:13:28
Hang on, how can you stuff 6 billion people	by Klaranth	2007-05-18 02:02:47
a little math	by rhinobird	2007-05-18 02:51:41
Some important math is missing	by lurker69	2007-05-18 12:18:54
The calculation of the energy needed (in the right form!) to transport all that material up up in the sky. I doubt if we can obtain so much energy and as it is released during the process that that amount is healthy for earth's atmosphere (we still need the surface for food and stuff?) However, I'm aware that we can start with a "thin" construction as once the space elevator is established I think I remember transport costs significant less energy / energy is taken out of rotation energy of the earth itself. If the latter is true we have an additional problem: if we move such a significant mass 36.000 km away, Earth's rotation will slow down and the geosync orbit shift... As our planet is slowing down anyway (days are getting longer, e.g. by tidal effects), how long will such a platform be enough in sync to use the space elevators? :-) Lurker "head's spinning" 69
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