"Unraveling the Mystery Behind Earth's Core's 8.5-Year Wobble Cycle"

Scientists from Wuhan University have proposed a new explanation for the mysterious 8.5-year wobble of Earth's inner core, suggesting it is misaligned by 0.17 degrees from the mantle's rotational axis. This finding, published in Nature Communications, challenges the conventional understanding of the core-mantle relationship and could provide insights into the Earth's geomagnetic phenomena. The research, which analyzed polar motion and length-of-day changes, may also help explain variations in the Earth's magnetic field over time.