01
Titan is Saturn's largest moon and the only moon with a dense atmosphere at its surface.
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02
Sunlight and energetic particles break methane and nitrogen molecules apart high in the atmosphere, driving organic photochemistry and haze formation.
supported03
Cassini radar mapped surface features through the haze, infrared observations identified clouds and composition, and the Huygens probe directly measured atmospheric structure during descent and imaged the surface after landing.