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New NASA device to listen Mars “heartbeat” (VIDEO)

UNITED STATES, WASHINGTON (OBSERVATORY) — It is now possible to listen to the “heartbeat” of Mars with a NASA robot that has been on the red planet since November 2018. The device, equipped with French technology, is able to make them audible to the human ear.

Nasa put online, Tuesday, October 2, two files containing seismic tremors that were recorded by his robot InSight, arrived in November 2018 on Mars, relates 20 Minutes.

According to the newspaper, a tremor can be traced back to May 22nd and the other to July 25th. They were recorded thanks to an ultra-sensitive seismometer designed by the French space agency CNES and installed in the American robot.

This device “listens” to the basement of Mars since early 2019, looking for tremors. CNES explained daily that these “heartbeats” occur because the planet is not dead and “breathes” a little. However, they are hardly perceptible by the human ear since their frequency is too low. It is with the help of an audio headset that it is possible to hear a slight roar.

French researchers have developed a technique of “sonification” that accelerates the content of files to make it audible. According to the daily newspaper, these recordings are representative of 21 events out of a hundred, whose scientists are almost sure that they are earthquakes.
According to NASA’s Jet Propulsion Laboratory (JPL), these earthquakes on Mars give researchers information on the crust of the planet that is comparable to “a mixture of Earth’s crust and that of the Moon”.

Researchers have found that Mars is more similar to the moon, because the crust of the moon is “drier” and its faults slow the seismic waves that propagate for tens of minutes. On the contrary, on Earth, the faults close again quickly thanks to the water which is infiltrated there, which allows the waves to cross them and to go towards the crust.

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