450-mile-wide solid metal ball forms Earth's innermost core, earthquake waves reveal
By A Mystery Man Writer
Description
Scientists calculated the diameter of Earth
450-mile-wide solid metal ball forms Earth's innermost core
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The Project Gutenberg eBook of Worlds In the Making, by Svante Arrhenius.
27th-february-2023-current-affairs-analysis
Earth's Inner Core Gets New Layer from Seismic Waves Discovery
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