Joanne Stephenson, a geophysicist at the Australian National University, clarified that the four primary layers of the Earth are the crust, the mantle, the outer core, and the inner core. Much of what ...

Earth's inner core is undergoing structural transformation. Located 3,000 miles below the Earth's surface, the inner core is anchored by gravity within the molten liquid outer core. Until now the ...

Earth cross section showing the classic distinction between crust, mantle and core. But new research ... [+] shows Earth's structure is far more complicated and may change over time. Analyzing an ...

Earth’s core is pretty dynamic. Its spin speeds up and slows down based on how its two primary layers are behaving. As we improve the waveform techniques used to study the deepest layer ...

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 over time as it spun.

In other words, the inner core’s shape could be changing over time because of complex interactions among the Earth’s layers. The researchers found that changes in seismic waves traveling ...

Hidden beneath layers of rock and molten metal, Earth’s inner core has long been viewed as a solid sphere. However, a recent study suggests that the surface of the inner core is undergoing structural ...

Argonne National Laboratory / CC BY-NC-SA 2.0 Scientists have found new evidence that the Earth’s inner core, a dense metal ball deep within the planet, may not be perfectly solid and is changing ...

Earth’s inner core is changing shape, scientists have found. The discovery resolves a long-simmering controversy about what’s happening at the heart of the planet — which was long thought to ...

The surface of ... into the core's interior. But they did see changes in the same spots in waves that just glanced the surface of the core, elucidating its outermost layer. Since the first studies ...