According to the passage, Titan differs atmospherically from Ganymede and Callisto because of a difference inSaturn’s giant moon Titan is the only planetary satellite with a significant atmosphere and the only body in the solar system other than Earth that has a thick atmosphere dominated by molecular nitrogen. For a long time, the big question about Titan’s line atmosphere was how it could be so thick, given that Jupiter’s moons Ganymede and 5 Callisto, which are the same size as Titan, have none. The conditions for acquiring and retaining a thick nitrogen atmosphere are now readily understood. The low temperature of the protosaturnian nebula enabled Titan to acquire the moderately volatile compounds methane and ammonia (later converted to nitrogen) in addition to water. The higher temperatures of Jupiter’s moons, which were closer to the Sun, prevented them 10 from acquiring such an atmosphere.rate of heat loss, proximity to the Sun, availability of methane and ammonia, distance from its planet, size
Add Your Explanation
You must have a Magoosh account in order to leave an explanation.