Researchers have confirmed that Earth's inner core, a solid metal ball spinning independently within our planet, has slowed down significantly. Seismic data reveals a 70-year cycle in its rotational speed. The findings, published in Nature, indicate a complex interplay of forces influencing the core's motion. While this slowdown may impact Earth's magnetic field, scientists continue to debate its broader implications. This article delves into the latest discoveries and ongoing research in understanding the mysterious inner core.
