Scientists discover core deep inside Earth — a solid ball of iron and nickel

Researchers on Tuesday said an intensive study of Earth’s deep interior confirmed the existence of a distinct structure inside our planet’s inner core.
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Who is drilling a hole more than 30,000 feet deep in the Earth's crust, and why? •

Planet-sized solid metal ball 'found' at the centre of the Earth…& 400 mile-wide 'innermost core' could be KEY to life

New Research Says Earth's Inner Core Hides a 'Planet' that 'Has Its Own Rotation

Iron in the Earth's core weakens before melting

Solid metal ball discovered within Earth's inner core •

Judgements are 1/2 B-B-Billion dollars so far and will likely

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

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Something very weird is happening inside Earth's core

Scientists have discovered a new core at the center of the Earth