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The solid crust of March was formed very rapidly after the birth of the solar system, according to a study published Wednesday, which suggests that the conditions necessary for the emergence of life could have appeared very soon the red planet
To have liquid water on a planet, one needs a solid surface and, consequently, a crust. "Our results indicate that Mars could have had oceans and potentially life before Earth," said AFP Martin Bizzarro, of the Danish Museum of Natural History in Copenhagen, co-author of the study published in the journal Nature.
(You can access the study since HERE )
A Martian meteorite NWA 7034 found in the Sahara desert and nicknamed Black Beauty, allowed to deciphering a part of the mystery around the first period of Mars
Seven grains of zircon, a hard mineral that survives the different geological processes, were extracted from a tiny sample of this meteorite and studied by a team of researchers who dated its crystallization. 19659006] "We were able to determine that the crystallization of the surface of Mars was extremely fast: only 20 million years after the formation of the solar system which was I dreamed there are 4,567 million of 39 years, Mars had a solid crust, which could shelter the oceans and perhaps also life, "according to Bizzarro.
These results contrast with the current models according to which solidification The planet has taken up to # 39 to 100 million years, "he says." These new data greatly extend the period when life may have existed on Mars. "
Researchers claim that the discovered Martian zircons are" about 100 million years older than the oldest terrestrial zircons "(4 370 million
The discovery in 2011 of Black Beauty, which weighed 319.8 grams, sparked a lot of interest among the community scientist, a gram has been sold for 10,000 euros, recalls Bizzarro.
The Museum of Natural History of Denmark has purchased 44 grams of meteorite, thanks to various media. Five of these grams were crushed to allow extraction of the seven zircons from the study.
Source: AFP
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