Now we just gotta hook it up to a giant hamster wheel to get the magnetosphere going again!

This is a great paper that solidifies (no pun intended) the framework that Mars structurally is still similar to earth - a solid inner core composed of mainly O, Fe, S, and C surrounded by a solid mantle. This opens more questions, If the Martian core is still solid, then what events in Mars’ past led to the geomagnetic field collapsing? How is there a lack of a dynamo field if the core is still crystallizing (can it be reactivated? Maybe with a giant hamster wheel?)