The Earth's inner core is thought to be slowly growing as the liquid outer core at the boundary with the inner core cools and solidifies due to the gradual cooling of the Earth's interior (about 100 …

Jun 5, 2025 · The core is made of two layers: the outer core, which borders the mantle, and the inner core. The boundary separating these regions is called the Bullen discontinuity.

Mar 30, 2025 · Earth’s interior can be divided into several layers: the crust, the mantle, the liquid outer core, and the solid inner core at the center. Many scientists have studied how the inner …

Mar 30, 2025 · Deep beneath our feet lies a realm shrouded in mystery—the Earth’s inner core. Recent studies have unveiled surprising insights into this hidden world, suggesting that the …

Sep 30, 2025 · Cartoon of the Earth with cutaway showing the mantle and inner and outer core. Magnetic field lines produced by the geodynamo extend into space and interact with the solar …

Feb 12, 2025 · A new study published Monday in the journal Nature Geoscience found evidence that the Earth’s inner core —a hot, mostly solid ball of iron roughly 1,500 miles wide —deforms …

Sep 17, 2025 · But despite its importance, many of the most fundamental properties of the core are unknown. We do not know exactly how hot the core is, what it is made of or when it began …

A new, detailed probe of Earth's heart reveals that the rotating inner core doesn't just change in rotation speed – it also appears to change in shape, with subtle variations appearing in the …

Feb 10, 2025 · The surface of Earth's inner core appears to be dynamic, changing shape as it rotates, earthquake waves reveal.

Feb 10, 2025 · Earth’s innermost layer is a hot, solid ball of metal surrounded by a liquid metal outer core. For decades, planetary scientists suspected that the solid inner core deformed …