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

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Scientists calculated the diameter of Earth

chipin-centre

Earth's innermost layer is a 400-mile-wide ball of iron, new study suggests, News

Scientists Discover Gigantic Solid Metal Ball Inside the Earth's Core

Scientists Discover Gigantic Solid Metal Ball Inside the Earth's Core

International IP Index

Here's why Morocco's quake was so deadly — and what we can do for

Scientists discover massive solid metal ball inside Earth's core

Zebrafish

The Earth has an Even More Inner Core, and it's a Ball of Solid Metal - Universe Today

Ancient ocean floor surrounds Earth's core, seismic imaging