Seismic detection of the martian core

Single seismometer structure Because of the lack direct seismic observations, interior Mars has been a mystery. Khan et al. , Knapmeyer-Endrun and Stähler used recently detected marsquakes from deployed during InSight mission to map (see Perspective by Cottaar Koelemeijer). likely 24- 72-kilometer-thick crust with very deep lithosphere close 500 kilometers. Similar Earth, low-velocity layer probably exists beneath lithosphere. The is highly enriched in radioactive elements that help heat this at expense interior. core liquid large, ∼1830 kilometers, which means mantle only one rocky rather than two like Earth has. These results provide preliminary helps constrain different theories explaining chemistry internal dynamics planet. Science abf2966, abf8966, abi7730, issue p. 434 438 443 see also abj8914, 388