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Earth's Inner Core Slows, May Affect Magnetic Field

3/29/2025

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Summary

Story summary

Earth's inner core, hidden over 3,000 miles beneath our feet, has been found to slow down and even rotate in reverse since 2010, according to groundbreaking research in *Nature Geoscience*. This unexpected shift not only challenges long-held beliefs about the core's stability but also hints at potential impacts on our magnetic field and the length of our days.

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Story summary

Earth's inner core, hidden over 3,000 miles beneath our feet, has been found to slow down and even rotate in reverse since 2010, according to groundbreaking research in *Nature Geoscience*. This unexpected shift not only challenges long-held beliefs about the core's stability but also hints at potential impacts on our magnetic field and the length of our days.