"Our results question the evolution of the Moon magnetic field thanks to its demonstration of the existence of the inner core and support a global mantle overturn scenario that brings substantial insights on the timeline of the lunar bombardment in the first billion years of the Solar System."
https://doi.org/10.1038/s41586-023-05935-7
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> in this context, demonstrate the existence of the lunar inner core with a radius of 258 ± 40 km and density 7,822 ± 1,615 kg m−3.
Can anyone one explain the kilograms per negative cubic metres to me, I’m not familiar with the term