🌍 Deep beneath Earth, the solid inner core has changed how it spins. New research shows that around 2010, Earth’s Moon-sized iron inner core began slowing down and now rotates slightly slower than the rest of the planet. Using seismic waves from powerful earthquakes, scientists tracked subtle changes in waves passing through the core, revealing that it first spun faster (2003–2008) before reversing and decelerating. This shift—likely driven by electromagnetic and gravitational forces deep insid

The Emergence of Earth’s Inner Core Helped Save the Planet, Study Suggests

New theory explains how Earth’s inner core remains solid despite extreme heat