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La NASA InSight registra i tremori di mostri su Marte, i più grandi mai rilevati su qualsiasi altro pianeta

InSight Lander su Marte

Illustrazione artistica del lander InSight su Marte. InSight, abbreviazione di Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, è stato progettato per studiare a fondo il Pianeta Rosso per la prima volta da quando si è formato 4,5 miliardi di anni fa. Credito: NASA/JPL-Caltech

Con una magnitudo stimata di 5, il tremore è il più forte mai registrato su qualsiasi altro pianeta.

Il lander InSight Mars della NASA ha rilevato il più grande terremoto mai osservato su un altro pianeta: un terremoto di magnitudo 5 che ha colpito il 4 maggio 2022, il 1222. Mars Day o Sol che svolgono la missione. Ciò amplia il catalogo di oltre 1.313 scosse rilevate da InSight dall’atterraggio[{” attribute=””>Mars in November 2018. The biggest quake previously recordedwas an estimated magnitude 4.2 detected on August 25, 2021.

Magnitude 5 Mars Quake Spectrogram

This spectrogram shows the largest quake ever detected on another planet. Estimated at magnitude 5, this quake was discovered by NASA’s InSight lander on May 4, 2022, the 1,222nd Martian day, or sol, of the mission. Credit: NASA/JPL-Caltech/ETH Zurich

InSight was sent to Mars with a highly sensitive seismometer, provided by France’s Centre National d’Études Spatiales (CNES), to study the Red Planet’s deep interior. As seismic waves pass through or reflect off material in Mars’ crust, mantle, and core, they change in ways that seismologists can study to determine the depth and composition of these layers. What scientists learn about the structure of Mars can help them better understand the formation of all rocky worlds, including Earth and its Moon.

Although a magnitude 5 quake is a medium-size quake compared to those felt on Earth, it’s close to the upper limit of what scientists hoped to see on Mars during InSight’s mission. The science team will need to study this new quake further before being able to provide details such as its location, the nature of its source, and what it might tell us about the interior structure of Mars.

Internal Structure of Mars

Artist’s impression of the internal structure of Mars. Credit: © IPGP / David Ducros

“Since we set our seismometer down in December 2018, we’ve been waiting for ‘the big one,’” said Bruce Banerdt, InSight’s principal investigator at Magnitude 5 Mars Quake Seismogram

This seismogram shows the largest quake ever detected on another planet. Estimated at magnitude 5, this quake was discovered by NASA’s InSight lander on May 4, 2022, the 1,222 Martian day, or sol, of the mission. Credit: NASA/JPL-Caltech

After the lander completed its prime mission at the end of 2020, meeting its original science goals, NASA extended the mission through December 2022.

More About the Mission

Jet Propulsion Laboratory (