Always fascinating that even in scientific terms something is best described as a wobble.
Is that an alternative explanation to the "inner core stopped moving and may reverse" theory? Wasn't that also in a 7, 8 year cycle?
To me (total idiot layman) this could make much more sense. What power could possibly make a 2400 km diameter metal ball change spin direction every few years?
But a wobble, yeah. Like a spinning top toy that lost a little speed and isn't perfectly upright anymore.
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