Editing Space colonization (section)

====Lagrange points====
{{Main|Lagrange point colonization}}
[[File:Lagrange points Earth vs Moon.jpg|thumb|A contour plot of the [[gravitational potential]] of the Moon and Earth, showing the five Earth–Moon Lagrange points]]

Another near-Earth possibility are the stable Earth–Moon [[Lagrangian point|Lagrange points]] {{L4}} and {{L5}}, at which point a space colony can float indefinitely. The [[L5 Society]] was founded to promote settlement by building space stations at these points. [[Gerard K. O'Neill]] suggested in 1974 that the stable region around L<sub>5</sub> could fit several thousand floating colonies, and would allow easy travel to and from the colonies due to the shallow [[effective potential]] at this point.<ref name="o'neill">{{cite journal |last1=O'Neill |first1=Gerard K. |author1-link=Gerard K. O'Neill |title=The colonization of space |journal=Physics Today |date=September 1974 |volume=27 |issue=9 |pages=32–40 |doi=10.1063/1.3128863 |bibcode=1974PhT....27i..32O |doi-access=free }}</ref>