The InSight mission was sent to Mars in 2018 with a very specific goal: to examine the interior of the Red Planet. As surprising as it may seem, it includes, among other things, the analysis of vibrations caused by gusts of wind. Now researchers, based on these data, are giving us a fairly detailed map of the Martian soil.
. It arouses the interest of researchers. Makes amateurs dream. And in recent years, a large number of scientific expeditions have gone out to meet him. They flew over it. They put themselves in orbit around it. or landed on its own land. Return the amount of information to Earth about or the surface of Mars. but the that landed on the sideElysium PlanetiaIt is a volcanic region located on On the planet, he is the first to pay special attention to his subsoil.
thanks to him (Switzerland) shows how, by tracking the echoes of the sound of the wind on layers of soil and rock, it is able to determine what the first two hundred meters of the crust of Mars is composed of.On board, Seis’ tool for Seismic experiment of the internal structureInSight has given scientists an idea of the size and composition of the red planet’s core. But also from the nature and its thickness . Today,
The technology they used was developed for completely terrestrial purposes. In order to study the underground structures of areas at risk of seismic activity. On our old good , in fact, the oceans, but also -Keep the ground shaking. And those weak tremors They can measure thanks to their more sensitive instruments that form fingerprints of what’s going on in the basement.
On Mars, there are no oceans. Very fragile atmosphere. With a little wind then. and one measuring station, and . However, probe records have just revealed some amazing details about the Martian interior One meter near the surface and a few tens of meters deeper.
The researchers’ mapping reveals an unexpected layer of 30-40 metres. Their origin remains to be determined. This layer is surrounded by thick sediments of solidification. All covered with a layer of about three meters sandy. She points out that the storyElysium Planetia It can be more annoying than I didn’t think so until then.
Already, thanks to previous studies of nearby craters, researchers have determined that the lava layers date back to about 1.7 billion – in the middle of a calm, cold, dry period on Mars – and 3.6 billion in years – during the strong . Above the smallest layer of lava, just below the surface regolith, there is also a bed of rock about 15 meters thick. It may have been lifted off the surface of Mars by a meteorite impact.
Now, the researchers hope that they can apply their method to explore the subsurface of Mars even deeper. Even the first kilometers of the crust of Mars.
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