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They find forms of nitrogen in rocks of Mars, which are essential for life and preparedness | Spanish.xinhuanet.com



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CITY MEXICO, March 25 (Xinhua) – At the base of Mars crater 'Gale, where a lake was about 3.5 billion years ago, NASA discovered “curiosity” nitrates, forms of nitrogen that are essential for life and as we know on Earth, because DNA is formed.

This was reported today, at a conference for the press, experts from the National Autonomous University of Mexico (UNAM) and NASA, who presented the latest results of "Curiosity", which has been on Martian soil since 2012.

Dr Rafael Navarro González, a researcher at the Institute of Nuclear Sciences at UNAM, led the work along with 29 international experts who reconstructed this past history of nitrogen from the red planet.

The scientists analyzed 14 rocks and found that the highest concentrations of nitrates were present in the oldest lake sediments, while a smaller amount was found in the most recent.

"We believe that nitrate concentrations have decreased due to a change in atmospheric chemistry," explained Navarro, co-investigator of the robot "Curiosity".

That change could have brought dramatic results to Martian's life, if it ever existed, such as acquiring the ability to convert atmospheric nitrogen into its nutrients that include nitrogen itself, or triggering an emergency. nitrogen would lead to extinction.

"In the older strata there is more nitrogen, which was useful so that the microbial communities that existed in the Gale crater lake could be fed, but as time went by, that nitrogen was contributed. since the asteroid collisions, he began to reduce the impact on the supply for these organisms, "Navarro said.

For the first time, for the first time there is a stratigraphic analysis of nitrate concentration in lake rocks in the Gale crater lake, which provides information on the evolution of nitrogen on Mars.

"Curiosity" was sent to Mars with the aim of collecting data on his geology and climate, as well as preparing people landing.

To this end, the robot performs several scientific experiments, including rock drilling.

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