Geophysicists Discover New Layer in Earth’s Composition. Posted: February 26, 2025 ... Underneath the Earth’s crust we know there is a hot mantle and an even hotter outer and inner core, ...

Scientists have long wondered what lies at the center of the Earth. New research is putting weight behind a theory that our home planet has a distinct ball of iron within its metallic core.

The beginnings of a strange layer of molten rock deep inside the Earth may have finally been figured out by geoscientists. This layer, known as the D" layer, is about 1,900 miles underneath the ...

Deep within Earth, there lies a mysterious layer called the D" layer. Located roughly 3,000 kilometers down, this zone sits just above the boundary between the planet's molten outer core and its ...

To download a pdf of this article, visit cenm.ag/earth-composition. References used to create this graphic: American Museum of Natural History. "Inge Lehmann: Discoverer of the Earth’s Inner ...

The fourth layer of Earth's atmosphere is the thermosphere. It begins just above the mesosphere and extends to approximately 372 miles (600 km) high, according to NASA.

A new series of experiments has shown that the mysterious "E-prime layer," which surrounds Earth's outer core, is created by water that leaks deep into our planet's interior.

Scientists have long wondered what lies at the center of the Earth. New research is putting weight behind a theory that our home planet has a distinct ball of iron within its metallic core.

Earth's innermost layer is a 400-mile-wide ball of iron, ... The reason this layer had not been previously observed in more detail is because its composition is so similar to what lies above it, ...