Layers based on chemical composition are the core, mantle and crust. According to mechanical properties, Earth's layers are the lithosphere, asthenosphere, lower mantle (also known as mesospheric ...

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.

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, ...

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 ...

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.

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 ...

Between 50 and 1,000 kilometers above our heads is the ionosphere, a layer of Earth's upper atmosphere consisting of charged ...

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, ...