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A low-density ocean inside Titan inferred from Cassini data

Goossens, Sander; van Noort, Bob; Mateo, Alfonso +2 more

The Cassini mission has provided measurements of the gravity of several moons of Saturn as well as an estimate of the tidal response, which is expressed as the degree 2 Love number k₂ of its largest moon, Titan. The first estimates of Titan's Love number were larger than pre-Cassini expectations. Interior modelling suggested it may be e…