Ep. 442: Destroy and Rebuild Pt. 6: Magnetic Pole Reversal - a podcast by 365DaysOfAstronomy.org
from 2017-03-07T20:31:10
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If we look back into the geologic record of the Earth, it appears that our planet’s magnetic field flips polarity every few hundred thousand years or so. Why does this happen? When’s it supposed to happen next? Is it dangerous?
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