Earth's inner core is solid, seismic waves reveal

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

Something very weird is happening inside Earth's core

What causes earthquakes? - British Geological Survey

3.2 Imaging Earth's Interior – Physical Geology – H5P Edition

Earth's inner core has stopped spinning - Scoop Upworthy

Is the Earth's Inner Core Spinning More Slowly?

Scientists find oddly behaving 'inner-inner core' at Earth's center - CNET

Earth's inner core is solid, seismic waves reveal

Earth's inner core is solid, seismic waves reveal

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

The Earth's Inner Core

Earth's Interior