ASTR 101 Study Guide - Quiz Guide: Space Age, Water Cycle, Smog
Document Summary
Callisto: callisto (jupiter iv) is the fourth and last galilean moon, and is the second largest of the four, and at 4820. 6 kilometers in diameter, it is the third largest moon in the solar system. Callisto was a daughter of the arkadian king lykaon and a hunting companion of the goddess artemis. It does not form part of the orbital resonance that affects three inner. Galilean satellites and thus does not experience appreciable tidal heating. Callisto is composed of approximately equal amounts of rock and ices, which makes it the least dense of the galilean moons. Investigation revealed that callisto may possibly have a subsurface ocean of liquid water at depths greater than 100 kilometers: the likely presence of an ocean within callisto indicates that it can or could harbor life. Fluctuations in the orbits of the moons indicate that their mean density decreases with distance from jupiter.
