Message #16684

[Abraxas]

Titan's internal structure.

Internal structure

Titan's diameter and mass (and thus its density) are similar to Jovian moons Ganymede and Callisto.[11] Based on its bulk density of 1.88 g/cm³, Titan's bulk composition is half water ice and half rocky material. It is probably differentiated into several layers with a 3400 km (2,040 mi) rocky center surrounded by several layers composed of different crystal forms of ice.[12] Its interior may still be hot and there may be a liquid layer consisting of water and ammonia between the ice crust and the rocky core. Though similar in composition to Rhea and the rest of Saturn's moons, it is denser due to gravitational compression.