: Recent data confirms the inner core’s rotation began to slow down in 2010, which can slightly affect the length of a day on Earth.
: The "softness" of the solid core is attributed to hyperactive iron atoms that move within their molecular structure more than expected. Comparison of Earth's Core Layers Corre!
: A 2025 study from USC found that the surface of the inner core is changing and may be "softer" than previously thought. : Recent data confirms the inner core’s rotation