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((sources|date=March 2021))
((short description|Proposed concepts for the human colonization of trans-Neptunian objects))
((Use American English|date=November 2020))
((Use mdy dates|date=November 2020))

[[Image:Kuiper oort-en.svg|thumb|upright=1.3|right|Artist's rendering of the [[Kuiper belt]] and [[Oort cloud]].]]

[[Freeman Dyson]] proposed that [[trans-Neptunian object]]s, rather than [[planet]]s, are the major potential habitat of life in space.((Citation needed|date=January 2016)) Several hundred billion to trillion [[comet]]-like ice-rich bodies exist outside the orbit of [[Neptune]], in the [[Kuiper belt]] and Inner and Outer [[Oort cloud]]. These may contain all the ingredients for life (water ice, ammonia, and carbon-rich compounds), including significant amounts of [[deuterium]] and [[helium-3]]. Since Dyson's proposal, the number of trans-Neptunian objects known has increased greatly.

Colonists could live in the [[dwarf planet]]'s icy [[Crust (geology)|crust]] or [[mantle (geology)|mantle]], using [[fusion power|fusion]] or [[Geothermal power|geothermal]] heat((Citation needed|date=January 2016)) and mining the soft-ice or liquid inner [[ocean]] for [[Volatile (astrogeology)|volatiles]] and [[mineral]]s. Given the light gravity and resulting lower pressure in the ice [[mantle (geology)|mantle]] or inner ocean, colonizing the rocky [[Planetary core|core]]'s outer surface might give [[colonists]] the largest number of [[mineral]] and [[volatility (chemistry)|volatile]] resources as well as insulating them from cold.((Citation needed|date=January 2016)) Surface habitats or [[domes]] are another possibility, as [[background radiation]] levels are likely to be low.((Citation needed|date=January 2016))

Colonists of such bodies could also build [[space habitat|rotating habitats]] or live in dug-out spaces and light them with [[fusion reactor]]s for thousands to millions of years before moving on.<ref>[[Carl E. Sagan]], "Pale Blue Dot: A Vision of the Human Future in Space". Random House, 1994, ((ISBN|0-345-37659-5)).</ref>((dubious|date=January 2016))<!--Low gravity health issues.--> Dyson and [[Carl Sagan]] envisioned that humanity could migrate to neighbouring star systems, which have similar clouds, by using natural objects as [[Generation ship|slow interstellar vessels]] with substantial natural resources; and that such interstellar colonies could also serve as way-stations for faster, smaller interstellar ships. Alternatively Richard Terra has proposed using the materials from the Oort-cloud objects to build vast starlight collecting arrays to power habitats, thus making an Oort-cloud community essentially independent of its central star and fusion fuel supplies.<ref>Richard P. Terra, "Islands in the Sky: Human Exploration and Settlement of the Oort Cloud", in ''Islands in the Sky: Bold New Ideas for Colonizing Space'', Stanley Schmidt and Robert Zubrin, eds. Wiley, 1996, ((ISBN|0-471-13561-5))</ref>

==References==
((reflist))

==Bibliography==
*Freeman Dyson, "The World, the Flesh, and the Devil", Third J.D. Bernal Lecture, May 1972, reprinted in Communication with Extraterrestrial Intelligence, Carl Sagan, ed., MIT Press, 1973, ((ISBN|0-262-69037-3))
*Richard P. Terra, "Islands in the Sky: Human Exploration and Settlement of the Oort Cloud", in Islands in the Sky: Bold New Ideas for Colonizing Space, Stanley Schmidt and Robert Zubrin, eds. Wiley, 1996, ((ISBN|0-471-13561-5))
*Ben R. Finney and Eric M. Jones, eds., Interstellar Migration and the Human Experience, University of California Press, 1986, ((ISBN|0-520-05898-4))
*David G. Stephenson, "Comets and Interstellar Travel", in Journal of the British Interplanetary Society, 36, 1983, pp.&nbsp;210–214.

((Use American English|date=January 2014))
((Space colonization))

((DEFAULTSORT:Colonization Of Trans-Neptunian Objects))
[[Category:Space colonization|+Trans-Neptunian objects]]
[[Category:Freeman Dyson]]
[[Category:Trans-Neptunian objects]]

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