InSight’s Heat Probe Has Bounced Back Out Of Its Hole

InSight's Heat Probe (HP3) has popped out of its hole. Image Credit: NASA/JPL-Caltech

This is sad news. After finding what seemed like a solution to the Mole’s difficulties on Mars, engineers are stymied again. The Mole, or Heat Flow and Physical Properties Package (HP3) has bounced half-way out of its hole.

It’s like Groundhog Day on Mars. If the Mole bounces out of its hole, it means six more weeks of engineers scratching their heads to come up with a solution.

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Success! NASA Confirms the Mole is Working Again.

The scoop on InSight's instrument arm exerting pressure on the Mole. This may supply the necessary friction to get the Mole going again. Image Credit: NASA/DLR

After months of setbacks, NASA says that the InSight Lander’s Mole is working again.

InSight landed on Mars on Nov. 26 2018 in Elysium Planitia. Its mission is to study the interior of the planet, to learn about how Mars and other rocky planets formed. InSight (Interior Exploration using Seismic Investigations, Geodesy, and Heat Transport) is a NASA mission with other partners, including the DLR (German Aerospace Center.)

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There’s the Curiosity Rover, On the Move, Seen from Space

MSL Curiosity as imaged by the Mars Reconnaissance Orbiter. Image Credit: NASA/CalTech-JPL

If the Curiosity rover was paranoid, would it feel like it was being watched? Well, it is being watched, by its brother in orbit, the Mars Reconnaissance Orbiter. The MRO watched Curiosity as it travelled through the ‘Clay-Bearing Unit‘ in Gale Crater, during June and July, 2019.

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It Looks Like it’s Working! NASA InSight’s Mole is Making Progress Again Thanks to the Arm Scoop Hack

The scoop on InSight's instrument arm exerting pressure on the Mole. This may supply the necessary friction to get the Mole going again. Image Credit: NASA/DLR

NASA and the DLR are making some progress with the Mole. The Mole has been stuck for months now, and NASA/DLR have been working to get it unstuck. After removing the mole’s housing to get a better look at it with InSight’s cameras, the team came up with a plan.

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Here’s NASA’s New Plan to Get InSight’s Temperature Probe Into Mars

The mole with its wiring harness, and the scoop. Image Credit: NASA/JPL-Caltech

The mole is still stuck.

The mole is the name given to the Heat Flow and Physical Properties Package (HP3) instrument on NASA’s Mars InSight lander. It’s job is to penetrate into the Martian surface to a depth of 5 meters (16 ft) to measure how heat flows from the planet’s interior to the surface. It’s part of InSight’s mission to understand the interior structure of Mars, and how it formed.

But it’s stuck at about 35 centimers (14 inches.) The mole can do science shy of its maximum depth of 5 meters, but not this shallow. And NASA, and the DLR (German Aerospace Center) who provided the mole, have a new plan to fix it.

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InSight Has Already Detected 21 Marsquakes

NASA's SEIS instrument on the Martian surface. SEIS is protected by a dome. Image Credit: NASA/JPL-Caltech

The SEIS (Seismic Experiment for Interior Structure) instrument on NASA’s InSight lander has sensed 21 Marsquakes since it was deployed on December 19th, 2018. It actually sensed over 100 events to date, but only 21 of them have been identified as Marsquakes. SEIS is extremely sensitive so mission scientists expected these results.

SEIS is a key part of InSight, NASA’s mission to understand the interior of Mars. Along with other instruments, it’ll help scientists understand what’s going on inside Mars.

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NASA’s Still Trying to Get InSight’s Mole Working Again. Progress is Slow.

The Heat Flow and Physical Properties Package deployed on the Martian surface. Image Credit: NASA/DLR
The Heat Flow and Physical Properties Package deployed on the Martian surface. Image Credit: NASA/DLR

The InSight lander has been on Mars for 213 Sols on its mission to understand the interior of the red planet. It’s armed with a seismometer, a temperature and wind sensor, and other instruments. But it’s primary instrument, arguably, is the Mole, or the Heat Flow and Physical Properties Package (HP3.) And the Mole has been stuck for a while now.

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This is What the Ground Looked Like After InSight Landed on Mars

The gnarly surface of Mars, with two pits excavated by InSight's thrusters. Image Credit: NASA/JPL-Caltech

When InSight landed on Mars on Nov. 26th, 2018, it deployed a parachute to slow its descent through the thin Martian atmosphere. As it approached the surface, it fired its retro rocket to slow it even more, and then gently touched down on the surface. As it did so, its retro rockets excavated two small pits in the Martian soil.

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Engineers are Still Troubleshooting Why Mars InSight’s Mole is Stuck and Won’t Go Any Deeper

The support structure for the Heat Flow and Physical Properties Probe. Image Credit: NASA/JPL-CalTech.

NASA’s Mars InSight Lander was always a bit of a tricky endeavour. The stationary lander has one chance to get things right, since it can’t move. While initially the mission went well, and the landing site looked good, the Mole is having trouble penetrating deep enough to fulfill its mission.

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Scientists are Trying to Figure Out Why InSight’s “Mole” Can’t Dig Any Deeper

The HP3 model in its test bed in Bremen. Image Credit: DLR.
The HP3 model in its test bed in Bremen. Image Credit: DLR.

Engineers at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) are busy working with a replica InSight Lander to see if they can understand what’s blocking the lander’s mole.

The mole is the short name for the lander’s Heat Probe, which is hammering its way into the Martian surface. The Heat Probe is actually called the HP3, or Heat and Physical Properties Package. It’s designed to work it’s way as far as 5 meters (16.4 ft.) into the soil, where it will measure the heat flowing from the interior of the planet. Those measurements will tell scientists a lot about the structure of Mars, and how rocky planets formed.

But as reported last month, the probe is being blocked at about 30 cm (1 ft.)

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