Analysis of Martian seismic data recorded by the InSight mission have revealed that Mars’s liquid iron core is surrounded by a150-km thick molten silicate layer, as a consequence of which its core is smaller and denser than previously proposed. (Artwork: Thibaut Roger, NCCR Planet S / ETH Zürich)
Analysis of Martian seismic data recorded by the InSight mission have revealed that Mars's liquid iron core is surrounded by a150-km thick molten silicate layer, as a consequence of which its core is smaller and denser than previously proposed. (Artwork: Thibaut Roger, NCCR Planet S / ETH Zürich) Mars's liquid iron core is smaller and denser than previously thought. Not only is it smaller, but it is also surrounded by a layer of molten rock. This is what researchers conclude on the basis of seismic data from the InSight lander. For four years, NASA's InSight lander recorded tremors on Mars with its seismometer. Researchers at ETH Zurich collected and analysed the data transmitted to Earth to determine the planet's internal structure. "Although the mission ended in December 2022, we've now discovered something very interesting," says Amir Khan, a Senior Scientist in the Department of Earth Sciences at ETH Zurich.
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