Tuesday, December 11, 2007

Mars already was capable to form organic composites, discloses study

Meteorite come of the red planet has traces of organic substance. Scientists believe that it was formed from chemical reactions in the rock.



Mars can have been capable to form same organic composites of carbon and hydrogen that are the bases da life na Land, of agreement with a material analysis do found no Martian meteorite Alan Hills 84001. It is the first time that it is indicated that Mars can have been capable to form organic composites.Previously, the researchers believed that the joined organic substance ALH 84001 or had been taken Mars for the impact of other meteorites or then she had been formed from Martian microbes.Led for Andrew Steele, the researchers of the laboratory of geophysicist of the Carnegie Institute, in the United States, they had made a detailed study of the meteorite and had compared the results with the gotten ones from rocks found in the region of Svalbard, in the Norway. These samples had been removed of volcanos that had entered in eruption in the Arctic have about a million of years, possibly similar conditions to the ones of Mars at its first moments. according to explanation of Steele, the organic composites occur inside of small carbonate spheres material, as much in the Martian rocks when in the ones of the Land. When the made rocks of from volcanic material of Svalbard had cooled, the mineral magnetite acted as catalytic of organic composites from rich fluids in water and carbon dioxide. Everything this happened in conditions where the life would be improbable. The samples of the Martian meteorite are on to the magnetite, what it indicates that this organic material would not have appeared from life forms, but directly of chemical reactions inside of the rock.

  • Favorable conditions -
In other work divulged in this tuesday (11), NASA affirmed that jeep-robot Spirit found signals of silica in ground Martian, what indicates that the planet can have had, in the past, an ideal environment for the sprouting of microorganisms. In the Land, places as this are rich in microbes.

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