Around 550 million years ago the earth's magnetic field almost collapsed, but then strengthened a few million years later. Scientists say this may have been due to the formation of the inner core. But why exactly would that cause the magnetic field to get stronger? Submitted by somethingX t3_122dugg on March 26, 2023 at 6:54 AM in askscience 73 comments 3,164
LORD_HOKAGE_ t1_jdwc2ks wrote on March 27, 2023 at 5:51 PM Long story short it created a more complex magnetic system that was kinda forced to be stable because of gravity forcing the inner core to be stable thus the more complex system allowed for more this stronger magnetic activity Permalink 1
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