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Interiors of Ganymede and Europa

Interiors of Ganymede and Europa


Date: 31 January 2011
Copyright: ESA/NASA

Possible locations of liquid layers in the icy moons of Jupiter are shown here as a function of depth:
  1. completely frozen;
  2. three-layered structures impeding any contact between the liquid layer and the silicate floor;
  3. thick upper icy layer (>10 km) and a deep ocean;
  4. very thin upper icy layer (3-4 km).
Cases 3 and 4 are the most probable for Europa, and cases 1 and 2 for Ganymede and Callisto.
Last Update: 1 September 2019
26-May-2022 17:38 UT

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