Submitted by somethingX t3_122dugg in askscience
Kantrh t1_jdrw2f2 wrote
Reply to comment by [deleted] in 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? by somethingX
No it wouldn't make sense. Theia happened 4.5 billion years ago making the whole planet molten
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