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Ganymede Interior

Ganymede Interior
This is an illustration of the interior of Jupiter's largest moon, Ganymede. It is based on theoretical models, in-situ observations by NASA's Galileo orbiter, and Hubble Space Telescope observations of the moon's aurorae, which allows for a probe of the moon's interior. The cake-layering of the moon shows that ices and a saline ocean dominate the outer layers. A denser rock mantle lies deeper in the moon, and finally an iron core beneath that.
  • Release Date
    March 12, 2015
  • Science Release
    NASA’s Hubble Observations Suggest Underground Ocean on Jupiter’s Largest Moon
    Read the release
  • Credits
    NASA, ESA, and A. Feild (STScI)

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Last Updated
Feb 17, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

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