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InSight lander
October 31 , 2023
263 days
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- Mars’s liquid iron core is likely to be surrounded by a fully molten silicate layer.
- The InSight Mars Lander used an instrument called the Seismic Experiment for Interior Structure (SEIS) to record seismic waves passing through Mars’s interior.
- Unlike Earth, Mars has a molten layer around its core.
- The new studies found that the liquid iron-nickel core of Mars is surrounded by an approximately 150 km-thick layer of near-molten silicate rock.
- This top layer was previously misinterpreted as the surface of the core.
- The size of the core, to be about 30% smaller in volume than previously thought, with a diameter of about 2,080 miles.
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