Scientists used the data of the Mars Reconnaissance Orbiter orbital and the INSIight landing module and received new information about the fall of asteroids on Mars and seismic signals that they produce. The most important discovery was that these signals can penetrate deeper into the bowels of Mars, which was previously considered. This can change the idea of \u200b\u200bthe internal structure of the red planet. The study is published in the journal Geophysical Research Letters, writes University Today.
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From 2018 to 2022, the INSIight landing module first measured seismic activity on Mars. In particular, he discovered more than 1300 earthquakes on Mars. Most of them were caused by geological activity, and several - hit the asteroids that fell far from the module.
The detection of seismic waves makes it possible to explore the inside of Mars and gives tips regarding the density, depth and thickness of the bark, mantle and nucleus. As the study shows, Insight recorded seismic waves from an asteroid strike that fell in the Cerberus Fossae region at a distance of 1640 km from the landing module. The blow itself occurred in 2002 and the resulting crater photographed Mars Reconnaissance Orbiter.
According to scientists, the surprise was that Insight was able to record seismic waves at such a distance. It was believed that they simply should not have reached the seismometer of the landing module. Scientists believed that Mars has a damping effect on distant clashes with the planet. This means that the waves caused by clashes went a more direct path along the "
This discovery has important consequences for as scientists usually imagine the bowels of Mars and may mean that our understanding and model of the interior of the planet may require a review.
According to the authors of the study, the discovery of this shock event changes our understanding of the bowels of Mars, especially its bark and upper mantle. The fact is that there are much more seismic events that Insight discovered much deeper into the planet than scientists suggested.
It was previously believed that Mars’s bark will capture most of the high -frequency seismic energy, directing it around the planet from the point of impact to the insight seismometer. Scientists thought that any high -frequency energy that penetrates deeper into the mantle is quickly lost. But it turns out the mantle of Mars is much better spreading this seismic energy, allowing it to spread faster and further.
This suggests that the mantle has a different elemental composition than previously expected, probably with a lower iron oxide content, which was predicted by earlier models, the authors of the study say.
As Focus already wrote, a black hole in a neighboring galaxy throws strange stars on the Milky Way. The study changes the idea of \u200b\u200ba large Magellan cloud, because there can be a huge black hole, although it is believed that it should not be there.
Focus also wrote that some stars completely change the idea of \u200b\u200bthe planets that rotate around them.