AI Summary

Scientists analyzing earthquake data have identified six previously unknown structures deep within Earth’s mantle, located roughly 2,900 km beneath the surface. The findings, reported by researchers including Edward Garnero and Mingming Li of Arizona State University, suggest these features are distinct from surrounding mantle material. Their discovery adds new detail to the understanding of the planet’s interior, which transitions from solid‑but‑viscous mantle to the liquid outer core at that depth.

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