NASA’s InSight Reveals the Deep Interior of Mars

Clouds drift over the dome-covered seismometer, known as SEIS, belonging to NASA’s InSight lander, on Mars. (Credits: NASA/JPL-Caltech)

Three papers published today share new details on the crust, mantle, and molten core of the Red Planet.

PASADENA, Calif. (NASA PR) — Before NASA’s InSight spacecraft touched down on Mars in 2018, the rovers and orbiters studying the Red Planet concentrated on its surface. The stationary lander’s seismometer has changed that, revealing details about the planet’s deep interior for the first time.

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NASA’s InSight Detects Two Sizable Quakes on Mars

NASA’s InSight lander used a scoop on its robotic arm to begin trickling soil over the cable connecting its seismometer to the spacecraft on March 14, 2021, the 816th Martian day, or sol of the mission. Scientists hope insulating it from the wind will make it easier to detect marsquakes. (Credits: NASA/JPL-Caltech)

The magnitude 3.3 and 3.1 temblors originated in a region called Cerberus Fossae, further supporting the idea that this location is seismically active.

PASADENA, Calif. (NASA PR) — NASA’s InSight lander has detected two strong, clear quakes originating in a location of Mars called Cerberus Fossae – the same place where two strong quakes were seen earlier in the mission. The new quakes have magnitudes of 3.3 and 3.1; the previous quakes were magnitude 3.6 and 3.5. InSight has recorded over 500 quakes to date, but because of their clear signals, these are four of the best quake records for probing the interior of the planet.

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3 Things We’ve Learned From NASA’s Mars

Credit: NASA

InSight scientists are finding new mysteries since the geophysics mission landed two years ago.

PASADENA, Calif. (NASA PR) — NASA’s InSight spacecraft touched down Nov. 26, 2018, on Mars to study the planet’s deep interior. A little more than one Martian year later, the stationary lander has detected more than 480 quakes and collected the most comprehensive weather data of any surface mission sent to Mars. InSight’s probe, which has struggled to dig underground to take the planet’s temperature, has made progress, too.

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NASA InSight’s ‘Mole’ Is Out of Sight

NASA’s InSight retracted its robotic arm on Oct. 3, 2020, revealing where the spike-like “mole” is trying to burrow into Mars. The copper-colored ribbon attached to the mole has sensors to measure the planet’s heat flow. In the coming months, the arm will scrape and tamp down soil on top of the mole to help it dig. (Credit: NASA/JPL-Caltech)

Now that the heat probe is just below the Martian surface, InSight’s arm will scoop some additional soil on top to help it keep digging so it can take Mars’ temperature.


PASADENA, Calif. (NASA PR) — NASA’s InSight lander continues working to get its “mole” – a 16-inch-long (40-centimeter-long) pile driver and heat probe – deep below the surface of Mars. A camera on InSight’s arm recently took images of the now partially filled-in “mole hole,” showing only the device’s science tether protruding from the ground.

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NASA’s InSight ‘Hears’ Peculiar Sounds on Mars

PASADENA, Calif. (NASA PR) — Put an ear to the ground on Mars and you’ll be rewarded with a symphony of sounds. Granted, you’ll need superhuman hearing, but NASA’s InSight lander comes equipped with a very special “ear.”

The spacecraft’s exquisitely sensitive seismometer, called the Seismic Experiment for Interior Structure (SEIS), can pick up vibrations as subtle as a breeze. The instrument was provided by the French space agency, Centre National d’Études Spatiales (CNES), and its partners.

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NASA’s InSight to Explore What Lies Beneath Martian Surface

InSight’seismometer (Crecdit: NASA)

PASADENA, Calif. and ELYSIUM PLANITIA, Mars (NASA/JPL-Caltech PR) — Mars has just received its newest robotic resident. NASA’s Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) lander successfully touched down on the Red Planet after an almost seven-month, 300-million-mile (458-million-kilometer) journey from Earth.

InSight’s two-year mission will be to study the deep interior of Mars to learn how all celestial bodies with rocky surfaces, including Earth and the Moon, formed.

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NASA InSight Team on Course for Mars Touchdown

An artist’s impression of NASA InSight’s entry, descent and landing at Mars, scheduled for Nov. 26, 2018. (Credits: NASA/JPL-Caltech)

PASADENA, Calif. (NASA PR) — NASA’s Mars Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) spacecraft is on track for a soft touchdown on the surface of the Red Planet on Nov. 26, the Monday after Thanksgiving. But it’s not going to be a relaxing weekend of turkey leftovers, football and shopping for the InSight mission team. Engineers will be keeping a close eye on the stream of data indicating InSight’s health and trajectory, and monitoring Martian weather reports to figure out if the team needs to make any final adjustments in preparation for landing, only five days away.

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