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This is a drawing of the interior of Pluto.
Click on image for full size
Image from: NASA

Pluto's Interior

The diagram to the left shows what the inside of Pluto may look like. Pluto is mostly made of ice, with a small core of some rocky material buried inside.

If the interior is warm enough, the inside of Pluto may turn over like ice cream in a blender. This type of interior motion leaves clues on the surface of a planet. (Earthquakes are big clues about motions inside of the Earth).

These clues are important to search for now, while the surface of Pluto may still be exposed.


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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF