Internal structure of Earth
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The internal structure of Earth is the spatial variation of chemical and physical properties in the solid Earth. The primary structure is a series of layers: Its mechanical structure is of a rigid lit
A photograph of Earth taken by the crew of Apollo 17 in 1972. A processed version became widely known as The Blue Marble.
Earth's inner core
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Earth's inner core is the innermost geologic layer of the planet Earth. It is primarily a solid ball with a radius of about 1,230 km, which is about 20% of Earth's radius or 70% of the Moon's radius.
Internal structure of Earth
…layers: Its mechanical structure is of a rigid lithosphere, a semi-fluid asthenosphere, a semi-fluid mesosphere, a liquid outer core, and a solid, rigid inner core. Its chemical structure is of a silicate crust, a ferromagnesian mantle, and an iron-nickel core whose flowing upper portion generates the Earth's…
Heat flow of the inner Earth, according to S.T. Dye and R. Arevalo.