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Earth's Inner Core Reveals Surprising Two-Layer Structure

8/27/2025

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Summary

Story summary

Recent research suggests Earth's inner core may have two distinct layers, challenging traditional structural models.
A 54-degree angle change in seismic wave direction indicates potential cooling events in Earth's history.
Data limitations from global earthquakes affect certainty, but findings support earlier studies on inner core anisotropy.
The study was published in the Journal of Geophysical Research.

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Story summary

Recent research suggests Earth's inner core may have two distinct layers, challenging traditional structural models.
A 54-degree angle change in seismic wave direction indicates potential cooling events in Earth's history.
Data limitations from global earthquakes affect certainty, but findings support earlier studies on inner core anisotropy.
The study was published in the Journal of Geophysical Research.