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It's amazing how we can learn things about the very depths of our planet.
Scientists Have Discovered a New Core at the Center of the Earth
Earth's core is growing 'lopsided' and scientists don't know why
Earth's inner core has stopped spinning - Scoop Upworthy
News on ZME Science
Making heads spin: Scientists say Earth's inner core has changed its rotation
News on ZME Science
Earth's inner core may be reversing its rotation
Earth's Inner Core May Right Now Be in The Process of Changing Direction : ScienceAlert
Earth's inner core is solid, seismic waves reveal
Seismic waves from earthquakes reveal changes in the Earth's outer core
Iron in the Earth's core weakens before melting
Earth's inner core - Wikipedia
Study of Earth's inner core reveals a 'planet within a planet' - Study Finds