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Heat Flow and Physical Properties Package

Heat Flow and Physical Properties Package (HP3)
Artist's impression of HP3 on the surface of Mars
OperatorNASA
ManufacturerGerman Aerospace Center (DLR)
Instrument typeinfrared radiometer,
thermal conductivity sensor
FunctionGeophysics of Mars
Mission duration2 years on Mars (planned)
Began operationsLanding: 26 November 2018
Websitemars.nasa.gov/insight/mission/instruments/hp3/
Properties
Mass3 kg (6.6 lb)
Power consumption2 watts
Host spacecraft
SpacecraftInSight Mars lander
OperatorNASA
Launch date5 May 2018, 11:05 (2018-05-05UTC11:05) UTC
RocketAtlas V 401[1]
Launch siteVandenberg SLC-3E[1]
COSPAR ID2018-042A

The Heat Flow and Physical Properties Package (HP3) is a science payload on board the InSight lander that features instruments to study the heat flow and other thermal properties of Mars. One of the instruments, a burrowing probe nicknamed "the mole", was designed to penetrate 5 m (16 ft) below Mars' surface. In March 2019, the mole burrowed a few centimeters, but then became unable to make progress due to various factors. In the following year further attempts were made to resolve the issues, with little net progress.[2] On January 14, 2021, it was announced that efforts to drill into the martian surface using the device had been terminated.[3]

HP3 was provided by the German Aerospace Center (DLR). The hammering mechanism inside the mole was designed by the Polish company Astronika and the Space Research Centre of the Polish Academy of Sciences under contract and in cooperation with DLR.[4][5]

The Principal Investigator is Tilman Spohn from the German Aerospace Center.[6][7]

  1. ^ a b Clark, Stephen (19 December 2013). "Mars lander to launch from California on Atlas 5 in 2016". Spaceflight Now. Retrieved 20 December 2013.
  2. ^ "NASA Uses InSight's Robotic Arm to Push Heat Probe Into Mars - ExtremeTech". www.extremetech.com. 19 March 2020. Retrieved 22 March 2020.
  3. ^ Dunn, Marcia (14 January 2021). "RIP: Mars digger bites the dust after 2 years on red planet". Associated Press. Retrieved 14 January 2021.
  4. ^ Cite error: The named reference Hammering mechanism was invoked but never defined (see the help page).
  5. ^ "Polish Kret will fly to Mars". Science in Poland. Retrieved 5 May 2018.
  6. ^ Cite error: The named reference octoberpres was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Home HP3 was invoked but never defined (see the help page).

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