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PLUTO

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Composition of the Planet

Pluto's Composition

Pluto's composition is a mixture of about 70% rock and 30% ice water. Some bright areas on the surface appear to be  covered with small amounts of ice nitrogen with small amounts of methane, ethane and carbon monoxide. The darker areas on Pluto's surface are unknown, but the dark regions may have been caused by primordial organic material or photochemical reactions caused by cosmic rays.



Pluto's composition   Go to fullsize image