The High Frontier: Human Colonies in Space |
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Page 179
... economic input to a combined space community / SSPS program will be the sum of the development and construction costs for Island One , the cost of lifting the material needed from Earth for subsequent communities and for those SSPS ...
... economic input to a combined space community / SSPS program will be the sum of the development and construction costs for Island One , the cost of lifting the material needed from Earth for subsequent communities and for those SSPS ...
Page 181
... economic projections have always been on the cautious side , assuming high lift costs for the space manufacturing equipment , large mass for the SSPS plants , relatively low productivity in space , high interest rates on investment ...
... economic projections have always been on the cautious side , assuming high lift costs for the space manufacturing equipment , large mass for the SSPS plants , relatively low productivity in space , high interest rates on investment ...
Page 250
... economic basis for most of the success- ful human colonies in their early stages . For the long - term economic viability of communities in space , we expect that there must be something which Earth must buy from L5 , and something that ...
... economic basis for most of the success- ful human colonies in their early stages . For the long - term economic viability of communities in space , we expect that there must be something which Earth must buy from L5 , and something that ...
Contents
A Letter from Space | 1 |
The Human Prospect on Planet Earth | 13 |
The Planetary Hangup | 29 |
Copyright | |
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acceleration antenna Apollo Apollo 12 asteroid belt astronauts atmosphere build built century chemical climate concept construction cylinder decades dollars early Earth Earth-normal economic efficiency electric engine environment Eric Drexler estimates flight fraction fuel geosynchronous orbit gravity growing growth Henry Kolm High Frontier humanization of space hundred increase industry Island Three land area launch lift costs limits living located low orbit lunar materials lunar surface magnetic mass-driver ment meteoroid miles million mirrors Moon NASA nations nuclear operation oxygen payload percent perhaps plants population population density possible power satellites power stations Princeton problem radiation reaction mass require rocket rotation seems shielding shuttle solar energy solar power solar power satellites solar system space colonies space communities space habitat space manufacturing Space Studies Institute speed sphere SSPS sunlight sunshine thousand tion tons transport Tsiolkowsky vehicle velocity zero-gravity