Science, Space and Technology News 2023
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By studying the propagation times of waves generated by this impact, an international team led by Henri Samuel, CNRS researcher at the Paris Institute of Globe Physics, and involving scientists from CNRS, ISAE-SUPAERO, and Université Paris Cité supported by CNES and ANR, as well as co-authors from the Royal Observatory of Belgium, the Universities of Maryland and Bristol, the Zürich Polytechnic School, the Russian Academy of Sciences, and NASA’s Jet Propulsion Laboratory,...
Furthermore, for several older seismic events, the arrival times of waves measured at the surface of Mars are compatible with reflections of shear waves at the top of the molten layer and not at the core-mantle interface, as previously assumed. Henri Samuel, CNRS researcher and geodynamicist at the IPGP, explains the new model for the internal structure of Mars, proposed in an article published in the journal Nature. The study, carried out by scientists from NASA’s InSight mission, proposes that the Martian mantle is inhomogeneous and made up of a layer of molten silicates overlying the Martian core.
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