[babygene]

“the long-held view that it is created by the rotation of a liquid iron core”

That view was popular, but never did make any sense.

[broncobilly]

That view was popular, but never did make any sense.

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Probably only because you are not up to speed on the equations of magnetohydrodynamics. Walter Elsasser would be disappointed in you.

[xcamel]

Basically the huge eddy currents created as the core interacts with the mantle.