Constraints limiting the rate of human expansion into the Galaxy

Details Constraints limiting the rate of human expansion into the Galaxy Constraints limiting the rate of human expansion into the Galaxy

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jbis...34..363s&link_type=abstract

British Interplanetary Society, Journal (Interstellar Studies), vol. 34, Sept. 1981, p. 363-366.

Mathematics

Logic

Extrasolar Planets, Interstellar Travel, Space Colonies, Space Exploration, Constraints, Extraterrestrial Intelligence, Long Term Effects, Milky Way Galaxy

Scientific paper

It is pointed out that human expansion into a largely lifeless Galaxy will be constrained by ecological and engineering factors. Bringing a barren planet to a stable habitable state will require a long series of biological introductions, each tailored to the particular planet. The difficulties in transporting complete ecosystems will mean that even a first-generation colony will have no more than a skeleton ecology. Settlers will be hard put to it to persuade older colonies, or earth itself, to send them extra life forms. This will be difficult in view of the fact that information is the only commodity that can be traded easily in return. Colonization will therefore proceed more slowly after the first expansion from earth. It is thought that extraterrestrial civilizations are probably limited in the same ways.

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