PBS Space Time

Is Earth's Magnetic Field Reversing?

Season 5 Episode 31 | 12m 46s

Earth’s magnetic field protects us from deadly space radiation. What if it were drastically weakened, as a precursor to flipping upside down? I mean, it has before … many, many times..

Aired: 11/05/19

Rating: NR

Video has closed captioning.

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