Editing Space settlement (section)

===Asteroids and other small bodies===
Most asteroids have a mixture of materials, that could be mined, and because these bodies do not have substantial gravity wells, it would require low delta-V to [[Asteroid mining|draw materials from them]] and haul them to a construction site.<ref name="Pournelle, Jerrold E. 1977"/><!--there are issues of delta-V to access Main Belt asteroids, but for NEAs, it's less than a GEO-Luna-GEO or L5-Luna-L5... Sad to say, I don't have any of these 3 at hand...-->

There is estimated to be enough material in the main asteroid belt alone to build enough space settlements to equal the habitable surface area of 3,000 Earths.<ref>[https://web.archive.org/web/20100531200205/http://settlement.arc.nasa.gov/75SummerStudy/Chapt7.html#LIM "Limits to Growth"], Chapter 7, ''Space Settlements: A Design Study''. NASA, 1975.</ref>