I may as well ask the question : magnetic fields: iron core, or mantle convection?
I'm doing a collab with someone and he needs to clarify something before we move on.
How widely accepted is the idea that mantle convection rather than core rotation is the driving force behind a magnetic field, and if it is the case, does that mean that a terrestrial planet or similar body need not possess an iron core to generate a magnetic field?
He seems to think that the mantle convection idea is widely believed. I'm not sure myself.
"Occam" is the name of the alien race that will enslave us all eventually. And they've got razors for hands. I don't know if that's true but it seems like the simplest answer."