Earth's inner core is solid, seismic waves reveal

It's amazing how we can learn things about the very depths of our planet.

Why Earth's inner core has speed trap for seismic waves

Scientists confirm existence of a fifth layer in Earth's core

Seismologists study Earth's core using nuclear monitoring system

How do we know that the outer core of the Earth is liquid? - Quora

Earth's inner core: a mixture of solid Fe and

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Study of Earth's inner core reveals a 'planet within a planet' - Study Finds

Scientists discover shocking new detail about Earth's core

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March 29, 1936: Notes on Earth's Inner Core

Researchers discover massive solid metal ball inside Earth

Something very weird is happening inside Earth's core

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Giant, Previously Unknown Structure Discovered Deep Inside Earth

Why Earth's Inner Core May Be Slowing Down