Astrophysics (Index)About

planetary differentiation

(stratification of the materials making up a planet)

Planetary differentiation is the separation of the materials within a planet into layers. Among the processes creating it are gravity and chemical processes. Heating plays a role, especially when it is enough to melt material.

Earth has been studied, with the conclusion that it has an iron core, a mantle of molten rock and a solid crust. Solar system planets and moons have been studied through sensors, but this is challenging.

Planetary atmospheres also stratify which might be considered part of the concept.


(planets,moons,geology)
Further reading:
http://en.wikipedia.org/wiki/Planetary_differentiation

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