The hottest Mars has never had Uncle Martin

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On November 5, NASA released the latest results of the Mars atmosphere and Volatile Evolution probe (Maven). "Maven" is the first probe dedicated to studying the upper atmosphere of Mars, which is translated into Chinese as "Marvin". The purpose of launching Marvin is to explore the cause of the disappearance of the Martian atmosphere. It lifted off on November 19, 2013 and entered the elliptical orbit around Mars on September 22, 2014. It has been in orbit for more than a year now

Mars was once thought to have been a dry and cold barren land in the past 2.5 billion years, but the continuous discovery of interstellar exploration has overturned this understanding. According to the data sent back by many Mars exploration missions, scientists believe that this red planet has undergone very drastic climate change, which has completely changed the face of Mars

it is known that the average temperature of the surface of Mars is about minus 60 degrees Celsius, and the lowest temperature in the polar regions in winter can reach minus 125 degrees Celsius. Under this temperature condition, water cannot flow stably on the surface in the form of liquid, even under the condition of high salinity driving precision hydraulic cylinders. The early Mars was much hotter and wetter than it is now. Why did such drastic climate change occur? Now, NASA scientists, based on the data sent back by the Marvin, give a preliminary conclusion: it is the solar wind that stripped the atmosphere of Mars, making the planet desolate and dry, and completely changing the originally hot surface of Mars covered with flowing water. At the same time, the results of Marvin's exploration also showed that the chance of life on Mars had disappeared soon after the formation of Mars, when the most primitive microorganisms had just appeared on earth

at the same time as NASA's press conference, the famous scientific journal Science published four papers of Ma Wen, which were published in the form of a special issue on the fundamental problem of flammability or flammability of the core, "Ma Wen's detection of fire has increased by nearly 42 times compared with 2012". Geophysical research letters also reported relevant results

human beings have explored Mars for decades, including launching a series of orbiters, landers and Mars rovers. The new discoveries of Mars exploration continue to impact human imagination and bring surprises to people in exploring the unknown world. Through the previous Mars exploration mission, it is known that Mars once had large-scale liquid water, which requires Mars to have a thick carbon dioxide atmosphere to achieve the greenhouse effect required to maintain the liquid state. But where does the carbon dioxide in the atmosphere come from, where does the liquid water on Mars come from, and whether Mars has the potential to be suitable for human migration? These issues that people are most concerned about are related to the change of Martian climate leading China's research and utilization of composite materials to a new plateau. The more people know about Mars, the more they want to know the relationship between the interior of Mars, the surface of Mars and the atmosphere of Mars

Marvin discovered ultraviolet aurora in the northern hemisphere of Mars and detected mysterious dust clouds in the upper atmosphere

the escape process of the Martian atmosphere is studied by measuring the interaction between the Martian upper atmosphere and the sun and the solar wind. These findings reveal for the first time the rate and path of the escape of the Martian atmosphere and the evolution history of the Martian atmosphere in the form of conclusive data, and infer that the solar wind is the reason for the disappearance of the Martian atmosphere and water

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