Mars set to get hammered by NASA InSight probe

Stop. Hammer time.

Amanda Kooser
Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto.
Amanda Kooser
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The burrowing heat flow probe is ready to hammer into Mars.


NASA's InSight lander on Mars doesn't have to sing "If I had a hammer." It's already got one. The lander's heat flow probe, nicknamed the "Mole," is in position on the ground and is ready to burrow into the planet by hammering its way downward.

The German Aerospace Center (DLR) developed the probe, which was originally set to start operations on Tuesday evening. DLR released an update saying the mission team missed its opportunity to send the command to trigger the Mole due to "unknown technical reasons." This means hammer time will be delayed by a couple of days.

The first digging session could take up to 4 hours and the InSight team will have to wait before getting confirmation of a successful attempt. 

The Heat Flow and Physical Properties Probe, HP3 for short, acts like a robo-mole by using a self-hammering spike. If it doesn't bump into any serious rocks, it could reach a depth of up to 16 feet (5 meters) while taking the temperature of Mars along the way.

The Mole won't try to burrow the full depth in one go. The first dig is aimed at reaching a little over 27 inches (70 centimeters) below the surface. NASA and DLR hope the Mole will tell us how much heat is flowing from the interior of Mars and what its source is.  

"Although we have tested the Mole extensively and diligently, there is still an uncertainty. This has never been done before on Mars or on another terrestrial planet," said Tilman Spohn, DLR's instrument lead, in a mission logbook entry. 

InSight has already placed a seismometer on the ground to listen for marsquakes. Unleashing the Mole is another big step forward for the lander's science mission.

Originally published Feb. 26, 9:57 a.m. PT.
Update, 2:07 p.m. PT
: Notes that the Mole operations have been delayed.

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