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  1. Earth's outer core - Wikipedia

  2. Core

  3. Top 10 Facts About The Earth’s Outer Core - Discover Walks

  4. Earth's Outer Core - Universe Today

  5. Layers of the Earth - Science Notes and Projects

  6. The Outer Core: The Earth’s Swirling Cauldron - ZME Science

  7. Earth's core - Simple English Wikipedia, the free encyclopedia

  8. Explainer: Earth — layer by layer - Science News Explores

  9. Basic Geology/Outer Core - Wikibooks, open books for an open …

  10. Inside the Earth [This Dynamic Earth, USGS] - USGS Publications …

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