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Just look inside Mars

NASA’s InSight Lander has just given us our first appearance inside a planet other than Earth.

More than two years after its inception, the data collected by InSight has provided researchers with information on the formation of Mars, how it has changed over 4.6 billion years, and how it differs from Earth. A group of three new studies, published in Science this week, he is showing that Mars has a much larger crust than we expected, as well as a meltwater surface that is larger than we think.

In the early days of the solar system, Mars and Earth were very similar, each with a sea blanket covering the surface. But over the next 4 billion years, the Earth has become a much better and healthier planet, with Mars losing its shape and water and becoming the empty ruins we know today. Knowing more about the location of Mars may help to explain why the two planets had very different displays.

“By the weariness of [a] an understanding of cartoons in the interior of Mars is reflected by the actual numbering, ”he said Mark Panning, a career scientist at the InSight mission, at a NASA press conference, “we are able to grow our family to understand how the planetary planets are made, how they look and what they look like.”

Since InSight landed on Mars in 2018, its seismometer, which is based on Earth, has detected more than a thousand earthquakes. Much is so small that it would be impossible for anyone to stand on the surface of Mars. But few were old enough to help the team first realize what was going on below.

NASA / JPL-CALTECH

Earthquakes cause natural waves that the seismometer detects. Researchers have developed a 3D map of Mars using color based on two types of waves: shear and wave waves. Shear waves, which just pass through the solid, are visible all over the world.

Stress waves are very fast and can pass through solids, liquids, and air. Measuring the difference between the time period of the waves allowed researchers to detect earthquakes and to give them an internal shape.

One group, led by Simon St.Ahreading, a meteorologist at ETH Zurich, used the data from the 11 great earthquakes to study the earth. From the point of view of the waves, they have determined that they are made of molten metal, and that they are much larger than previously thought (between 2,230 and 2320 miles wide) and probably smaller.


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