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This is a drawing showing the composition of the interior of Uranus.

What the Inside of Uranus is Made of

Uranus is mostly ice on the inside.

Ice begins forming in the atmosphere of Uranus, near the clouds.

The amout of ice in the air keeps increasing until there is slush, and then solid ice. This ice is warm (for Uranus) and can flow like rocky material inside the Earth does.

Compared to Jupiter and Saturn, Uranus has very little metal hydrogen, and there is much more ice. The drawing shows lots of purple ice "cubes" compared to Jupiter.

The core of Uranus is made out of rock and metal.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA