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Water on Mars could have been triggered by meteorite influences

Cosmic influences on young Mars could have led to flooding, possibly explaining why the Red Planet was once covered with water finds a new study.

Although Mars is now cold and dry, scientists have done so. For decades, evidence has been found that the planet's surface was once covered with rivers, streams, ponds, lakes, and perhaps even seas and oceans. Because there is life in virtually every part of the world where there is water, there is the possibility that Mars was once home of life and may still be home to it because of the water story on the Red Planet.

As proof of the water of the Red Planet, the scientists could not figure out how Mars could have possessed this water in its early days. During the youth of the Red Planet, the sun was cooler than it was now, and in previous climate models, it was thought Mars might lack enough greenhouse gases to store enough heat for a significant rainfall.

Related: Curiosity Rover Finds Ancient "Building Blocks for Life" on Mars

New, as yet uninvestigated, research investigates a possible answer to this mystery: that cosmic Radiation affects heated Mars by producing enormous amounts of molten or vaporized rock and vapor. This, the newspaper said, would help explain the signs of a warmer, more humid past on Mars. To explore this possibility, the scientists analyzed the environmental impact of cosmic influences on computer models of the climate and geology of Mars.

"Using sophisticated three-dimensional global climate model simulations similar to those used to simulate global warming on Earth, for example, we were able to simulate climate change for the first time in three dimensions triggered by the very large impacts that Mars has about 4 billion years ago, "writes prominent author Martin Turbet, a planetary researcher and climatologist at the Sorbonne University in France, opposite Space.com.

The researchers focused on the influences of the largest rocks that ever hit Mars more than 1

00 kilometers across. These are large enough to explain the largest craters on the Red Planet, basins more than 600 km wide.

The scientists found that one of these influences would make the atmosphere so hot that water would not stay on the surface of Mars for about half a year. After that, a dozen Martian years of constant rain fell. During this time, the water originally evaporated by the collision would return when the Red Planet was flooded, with an average of 2.6 meters of water covering Mars each year. (One Martian year is equivalent to about 1.88 Earth years.)

After these rains, Mars rapidly cooled and its surface water solidified in 1,000 to 100,000 years. In the course of another 10,000 to 1 million years, solar radiation directly transformed the surface ice into water vapor, allowing water to migrate and freeze to the marshes and other cold parts of the red planet.

] The researchers calculated that a particularly large impact – for example, of a roughly 300 km wide rock leaving a crater with a diameter of 1,530 km – would lead to a local occurrence in addition to all these global consequences Mars, which could survive tens of millions of years. Although this hot spot would not be warm enough for most of its existence to melt water on the Martian surface, it could help keep water underground and at the bottom of all overlying ice deposits.

Here are some of the most noteworthy features of water on Mars: the main valley networks south of the equator. Near the Martian equator, however, storm-induced storms were likely to peak. Previous research also suggests that valley nets and the largest basins on Mars have formed at different times in the history of the planet.

These results also indicate that these eruptions may have caused the erosion of the craters that scientists have discovered in images of the planet. The Martian surface was collected by missions such as Mars Global Surveyor, Mars Express and Mars Reconnaissance Orbiter, Turbet said. In addition, the swarms triggered by cosmic impacts may have led to the formation of ancient clays on the Red Planet consistent with the presumed age of these materials.

The research is described in a newspaper which was posted on the pre-print site arXiv.org and handed over to the journal Icarus, but has not yet been adopted by this. Follow Charles Q. Choi on Twitter @cqchoi . Follow us on Twitter @SpaceTotcom and Facebook .

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