Titan's internal structure and the evolutionary consequences

► This paper reports a suite of Titan interior models for comparison with Cassini gravity data. ► Titan's observed moment of inertia is strongly indicative of a large, low-density core. ► The core must consist of either hydrous silicates, or a mixture of ice + anhydrous silicates. ► Either of these possibilities requires that Titan's core is comparatively cool, 500-800 K.