The Galilean moon Io is a world tormented by active lava-spewing volcanoes, as it is stretched and squeezed by the gravitational forces of Jupiter, and the moons Europa and Ganymede.
Is there a global shallow ocean of hot magma underneath the surface or are the volcanoes powered by their own chambers of magma?
A new study by the NADA Juno team, presented at AGU24, indicates the latter, as shown in the graphic below.
https://www.jpl.nasa.gov/news/nasas-juno-mission-uncovers-heart-of-jovian-moons-volcanic-rage/
https://rdcu.be/d3kUh
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