Earth layer
The innermost compositional layer of the Earth: a metallic iron–nickel region, denser than the mantle above it, divided into a liquid outer core and a solid inner core.
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The core is metallic — an iron–nickel alloy — rather than stony, and is nearly twice as dense as the mantle above it.
Evidence support: Supported by the cited evidence one source
Evidence: Kious 1996 Primary authority
Record last updated 2026-09-06. Corrections follow the published corrections policy; superseded claims are retained, never silently edited.