New measurements from NASA's Juno probe have seemingly put to bed the possibility of a magma ocean beneath the surface of Io.

What causes volcanic eruptions on Jupiter's moon Io? Scientists aren't so sure anymore

Source: space
Source Link: https://www.space.com/space-exploration/juno/what-causes-volcanic-eruptions-on-jupiters-moon-io-scientists-arent-so-sure-anymore