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m Capitalising short description "colonization of five equilibrium points in the orbit of planets or moons" per WP:SDFORMAT (via Bandersnatch) |
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[[Gerard K. O'Neill]] suggested in 1974 that the Earth–Moon L<sub>5</sub> point, in particular, could fit several thousands of floating colonies, and would allow easy travel to and from the colonies due to the shallow [[effective potential]] at this point. A contemporary NASA team estimated that a 500,000-tonne colony would cost US$5.1 billion (equivalent to US${{inflation|US|5.1|1974}} billion in {{Inflation/year|US}}) to build.<ref name="o'neill"/>
O'Neill proposed manufacturing large [[O'Neill cylinder|cylinders]] or [[Bernal sphere|spheres]] as potential colony habitats, while others proposed an enclosed [[Stanford torus|torus]] shape or a huge [[Bishop Ring (habitat)|ring]] without a "roof". Another approach is to move an asteroid to a lagrange point with a colony in its [[Terrarium (space habitat)|hollow]] interior.
== See also ==
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