Astronomy Cast Ep. 442: Destroy and Rebuild Pt. 6: Magnetic Pole Reversal

By Fraser Cain - March 2, 2017 at 3:13 PM UTC | Planetary Science
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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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Fraser Cain

Fraser Cain

Fraser Cain is the publisher of Universe Today, founding the website in March 1999. He's also the co-host of Astronomy Cast.