Earth's magnetic field 98,000 years ago

Earth's magnetic field 98,000 years ago



 

Earth's magnetic field has flipped its polarity many times over the millennia
 
 When the reversed patches grow to the point that they dominate the rest of the core, 
 Earth's overall magnetic field flips. 
 The last reversal happened 980,000 years ago during the Stone Age,
 and indeed there's evidence to suggest the planet may be in the early stages of a pole reversal right now.
 

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