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Scientists Discover Six Mystery Structures Lurking Deep Inside Earth

AI analyzed more than 2 million seismic recordings from 5,000 earthquakes and identified six previously unknown regions near the core-mantle boundary.

  • Chinese researchers used artificial intelligence to map six previously unknown structures approximately 1,800 miles beneath Earth's surface, along the boundary where the solid mantle meets the liquid outer core.
  • Because manual identification of seismic signals is inefficient and subjective, researchers trained an artificial intelligence model on existing examples and applied it to more than two million recordings from 5,000 earthquakes.
  • The system extracted 174,929 high-quality PKP precursor signals, more than ten times the volume gathered in all earlier studies combined, exposing six large regions of unusual material.
  • There, temperatures jump by roughly 1,000 Celsius where solid rock meets a sea of molten nickel and iron; scientists wrote they discovered six areas that likely host significant heterogeneities never before documented.
  • Identifying these zones provides clear priority targets for future exploration of Earth's deep interior, as high-resolution coverage will help refine structural models and deepen understanding of the planet's geodynamic state.
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Photo: NASA (Unsplash) Six previously completely unknown structures deep within the Earth have been discovered by Chinese scientists. Using artificial intelligence, the researchers analyzed millions of seismic signals and stumbled upon something that …

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Using AI, researchers discover six unknown structures deep in the earth. Their exact nature remains enigmatic.

·Syke, Germany
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One of the more intriguing possibilities is that some of this material comes from the hypothetical protoplanet Theia.

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Kreiszeitung broke the news in Syke, Germany on Tuesday, September 1, 2026.
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