450-mile-wide solid metal ball forms Earth's innermost core, earthquake waves reveal

Scientists calculated the diameter of Earth

Earth's innermost layer is a 400-mile-wide ball of iron, new study suggests - Indianapolis News, Indiana Weather, Indiana Traffic, WISH-TV

Global Geological And Climatic Events - Civilsdaily

450-mile-wide solid metal ball forms Earth's innermost core

Swirls of liquid iron may be trapped inside Earth's 'solid' core

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Tiny vibrations hours after large earthquakes reveal a solid, low-rigidity inner core

A 650-km thick solid metallic ball forms the earth's innermost inner core - Frontline

450-mile-wide solid metal ball forms Earth's innermost core

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Gigantic Solid Metal Ball Discovered Inside The Earth's Core