Tue, Dec 24, 11:48 PM CST

The planet MARS (finally) terraformed!

Fractal Science Fiction posted on Feb 12, 2011
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M/B I wish all visitors of my gallery, an excellent weekend of dreams. I hope that those who suffer receive new soothing. Life is priceless and is so short. Enjoy your visit and ... THANKS! La terraformation est un thème classique de la science-fiction, inventé par l'auteur américain Jack Williamson en 1940. Il s’agit d’une science qui étudie la transformation de l'environnement naturel d'une planète, d'un satellite naturel ou d'un autre corps céleste, afin de la rendre habitable en réunissant les conditions d’une vie de type terrestre. Le terme officiel en France est écogenèse[1]. Au Journal officiel du 17 avril 2008, le terme de biosphérisation est imposé en remplacement du terme « écogenèse » proposé dans le Journal officiel du 22 septembre 2000. Le terme de biosphérisation est défini comme la « transformation de tout ou partie d'une planète, consistant à créer des conditions de vie semblables à celles de la biosphère terrestre en vue de reconstituer un environnement où l'être humain puisse habiter durablement. » L'action primordiale pour y arriver est la modification ou la création d'une atmosphère de composition proche de celle de la Terre, composante essentielle au développement de la vie. On parle aussi d'ingénierie planétaire si l'objectif n'est pas de faire ressembler la planète en question à la Terre. Chaque candidat à la terraformation présente des conditions qui lui sont propres, rendant le processus spécifique pour chacun d'eux. Les principales études menées concernent la planète Mars. D'autres concernent Vénus, Europe (satellite de Jupiter) et Titan (satellite de Saturne), mais les conditions semblent beaucoup plus difficiles à modifier. Terraforming (literally, "Earth-forming") of a planet, moon, or other body is the hypothetical process of deliberately modifying its atmosphere, temperature, surface topography or ecology to be similar to those of Earth to make it habitable by terran organisms. The term is sometimes used more generally as a synonym for planetary engineering, although some consider this more general usage an error. The concept of terraforming developed from both science fiction and actual science. The term was coined by Jack Williamson in a science-fiction story ("Collision Orbit") published during 1942 in Astounding Science Fiction,[1] but the concept may pre-date this work. Based on experiences with Earth, the environment of a planet can be altered deliberately: 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 terraforming. Much study has been done concerning the possibility of heating the planet and altering its atmosphere, and NASA has even hosted debates on the subject. Several potential methods of altering the climate of Mars may fall within humanity's technological capabilities, but at present the economic resources required to do so are far beyond that which any government or society is willing to allocate to the purpose. 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, the free encyclopedia.

Comments (31)


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MrsRatbag

10:18AM | Sun, 13 February 2011

Stunning work, Claude; amazing details!

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