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Why Human Settlements in Space?
Location and Shape of the Colonies
Building the First Colonies
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agricultural aluminum Ames group Ames study group artificial habitat asteroids astronautics atmosphere axis builders built cables centrifugal force COLONIES IN ORBIT colonies in space colonists colony's construction cosmic cylindrical habitat cylindrical space habitat earth's atmosphere earthlike endcap environment envisioned established in space exterior flight friction future space giant habitat—an artificial habitats in space human interior Jules Verne Knight Lagrangian points land areas launch libration liquid hydrogen living in space locations lunar soil main cylinder man-made manufacturing pods materials meteoroids miles in diameter mirrors Model 1 colony moon rock NASA needed O'Neill believes O'Neill's O'Neillian Oberth payloads of moon population power station rockets rors rotation satellite scientists Settlements in Space shuttle craft solar energy solar power sold to earth space colonies space communities space dwellers spacecraft sphere square miles sunlight supply tiny planets tion torus torus-shaped Tsiolkovsky tube twin vehicles Verne Verne's water vapor wheel-shaped