<ul><li>Earth's inner core is not perfectly solid and its outer surface changes shape due to interactions with the molten outer core.</li><li>Seismic wave analysis of earthquakes showed evidence of the inner core being affected by outer core turbulence.</li><li>Scientists once believed the inner core to be a solid sphere, but new research shows it is less solid and changes shape over time.</li><li>The discovery of the inner core's changing shape could help scientists understand Earth's core dynamics, thermal properties, and magnetic field.</li></ul>

Earth’s inner core changes shape over time

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