Disadvantages Of Space Colonization

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Space colonization (also called space settlement, or extraterrestrial colonization) is permanent human habitation off planet Earth.

Many arguments have been made for space colonizationThe two most common are survival of human civilization and the biosphere in case of a planetary-scale disaster (natural or man-made), and the vast resources in space for expansion of human society.

No space colonies have been built so far. Currently, the building of a space colony would present a set of huge challenges both technological and economic. Space settlements would have to provide for nearly all (or all) the material needs of hundreds or thousands of humans, in an environment out in space that is very hostile to human life. They would involve technologies, such as controlled ecological life support systems, that have yet to be developed in any meaningful way. They would also have to deal with the as yet unknown issue of how humans would behave and thrive in such places long-term. Because of the present cost of sending anything from the surface of the Earth into orbit (around $2,500 per pound to orbit, expected to further decrease)[2] a space colony would currently be a massively expensive project.

There are no plans for building one by any large-scale organization, either government or private. However, there have been many proposals,
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Halle, formerly of the United States Department of State, wrote in Foreign Affairs (Summer 1980) that the colonization of space will protect humanity in the event of global nuclear warfare.[9] The physicist Paul Davies also supports the view that if a planetary catastrophe threatens the survival of the human species on Earth, a self-sufficient colony could "reverse-colonize" Earth and restore human civilization. The author and journalist William E. Burrows and the biochemist Robert Shapiro proposed a private project, the Alliance to Rescue Civilization, with the goal of establishing an off-Earth "backup" of human
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