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This is a cutaway of Ganymede's interior.
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NASA

Interior of Ganymede

The picture on this page shows what the inside of Ganymede looks like. Scientists have made this model based on measurements by the Galileo spacecraft. The picture shows a samll core of metal (silver), then some rocky material (brown), then some ice (blue).

Using Galileo, scientists also found that Ganymede has a strong magnetic field - the first time this was ever measured near any moon!

Last modified September 19, 2003 by Jennifer Bergman.

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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