Unveiling Earth's Inner Core: Assumptions Challenged and Structure Confirmed

Researchers from China have confirmed the existence of an approximately 8.5-year Inner Core Wobble (ICW) in both polar motion and length-of-day variations, revealing a static tilt of about 0.17 degrees between the Earth's inner core and mantle. This challenges traditional assumptions and provides insights into the Earth's internal dynamics and density distribution. The findings have implications for understanding Earth's structure, seismic activity, and magnetic field. Future research aims to explore the stratified structure and density of the Earth's core and delve deeper into the patterns and periods of core motions.