Shots on Mars heat the water temperature to life

19/11/2012

The water is warm enough that it could harbor life, still flowed on Mars, the authors tell us the next episode of a long series of scientific, which is becoming confusing. Let us recall a recent example: first, the rover Curiosity on Mars has found the ancient river, but later found that there is no methane, despite the ground-based observations. Heart eager to behold Martian life of this news dropped, because the world 90-95% of the gas produced living beings.




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But there is still hope. An analysis of meteorites, flown to us from red neighbor, showed that the temperature of water on Mars in some places reached 50-150? C, that is, as the sources of Yellowstone Park, which is known to be full of life. Lead author John Bridges of the University of Leicester (UK) suggests that the water is heated by the fall of meteorites, and they were many: just look at the pictures of the Martian surface.

Martian meteorites are divided into three types: shergottity, chassignity and nahlity. Mr. Bridges and his colleagues are interested in the past. Of whom there are only eight.

"This group contains small veins filled with minerals that were formed by the action of water near the surface of Mars," — says the researcher. One of these meteorites — Lafayette — was particularly rich in newly formed minerals, so it is studied separately under an electron microscope and transmission electron microscope. Based on the obtained data, there was formed the first siderite (iron carbonate), as it appears in water saturated with carbon dioxide at a temperature of about 150? C. The subsequent reduction in temperature to 50? C and scattering carbon dioxide led to the formation of the clay. According to the researchers, it is this process (reducing the temperature and the formation of minerals) is a catalyst for the growth of microorganisms, for the latter use of energy and elements allocated in the corresponding reactions.

Suzanne Shventser of the Open University (UK) and her colleagues conducted computer simulations of the process, convinced that life is indeed could exist in such an environment — as opposed to the one that was associated with acidic sulfates.

The study is published in the journal Earth and Planetary Science Letters.

Prepared according to Wired UK.

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