Posterior distributions for the interior properties obtained from the inversion of different combinations of the geophysical observations related to the reference model. Each case includes an additional constraint on top of the static gravity observations, which represents our current knowledge of Europa’s interior structure based on Galileo gravity data (L. Gomez Casajus et al. 2021). The contour lines correspond to the 1σ, 2σ, and 3σ credible regions (68%, 95%, and 99.7% probability).