"Study Reveals 8.5-Year Wobble Cycle in Earth's Core"
A new study by Chinese scientists reveals that Earth's inner core experiences a wobble around its rotational axis every 8.5 years, potentially affecting the planet's magnetic field. This wobble is thought to be caused by a misalignment between the inner core and the mantle, with a tilt of 0.17 degrees. The discovery, which rules out atmospheric, oceanic, and hydrological influences, could provide insights into Earth's geophysical dynamics and future changes in the magnetic field. The research was published in the journal Nature Communications.