Terraforming...
The terraforming (literally, "Earth-shaping") of a planet, moon, or other body is the hypothetical process of deliberately modifying its atmosphere, temperature, or ecology to be similar to those of Earth in order to make it habitable by humans. It is a type of planetary engineering. The term is sometimes used broadly as a synonym for planetary engineering in general. The concepts of terraforming are rooted both in science fiction and actual science. The term was probably coined by Jack Williamson in a science-fiction story published in 1942 in Astounding Science Fiction,[1] but the actual concept pre-dates this work. Olaf Stapledon's Last and First Men (1930)[2] provides an example in fiction in which Venus is modified after a long and destructive war with the original inhabitants, who naturally object to the process.
Since space exploration is in its infancy, a good deal of terraforming remains speculative. Based on what we know of our own world it seems possible to affect the environment in a deliberate way in order to change it; however the feasibility of creating an unconstrained planetary biosphere that mimics Earth on another planet has yet to be verified. Mars is considered by many to be the most likely candidate for terraformation. Much study has gone into the possibility of heating the planet and altering its atmosphere, and NASA has even hosted debates on the subject. However, a multitude of obstacles stand between the present and an active terraforming effort on Mars or any other world. The long timescales and practicality of terraforming are the subject of debate. Other unanswered questions relate to the ethics, logistics, economics, politics and methodology of altering the environment of an extraterrestrial world.
From wikipedia: http://en.wikipedia.org/wiki/Terraforming
Since space exploration is in its infancy, a good deal of terraforming remains speculative. Based on what we know of our own world it seems possible to affect the environment in a deliberate way in order to change it; however the feasibility of creating an unconstrained planetary biosphere that mimics Earth on another planet has yet to be verified. Mars is considered by many to be the most likely candidate for terraformation. Much study has gone into the possibility of heating the planet and altering its atmosphere, and NASA has even hosted debates on the subject. However, a multitude of obstacles stand between the present and an active terraforming effort on Mars or any other world. The long timescales and practicality of terraforming are the subject of debate. Other unanswered questions relate to the ethics, logistics, economics, politics and methodology of altering the environment of an extraterrestrial world.
From wikipedia: http://en.wikipedia.org/wiki/Terraforming
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postato da David Casalini alle
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