Tag Archives: Earth’s Core

Earth’s core may have hardened just in time to save its magnetic field

by Carolyn Gramling, ScienceNews

This shift both prevented the protective magnetic field from collapsing and recharged it.

Earth’s inner core solidified sometime after 565 million years ago — just in time to not only save the planet’s protective magnetic field from imminent collapse, but also to kick-start it into its current, powerful phase, a new study suggests.

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