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The results may also give scientists an insight into a rare phenomenon on Earth, in which the north and south pole switch hemisphere locations known as geomagnetic reversal.

Most scientists, including Sprain, doubt an impending geomagnetic reversal.

This is both good and bad if you’re concerned about how a geomagnetic reversal will affect life on Earth.

Powered by the machinations of the planet’s spinning iron core, this process of geomagnetic reversal has been doing its thing without much fanfare for eons.

So what is a geomagnetic reversal?