That's a great question! While Titan, Saturn's largest moon, does have an atmosphere, it's not obscured by thick clouds of ammonia ice. Here's why:

* Titan's Atmosphere: Titan has a thick atmosphere, primarily composed of nitrogen (about 98%) with methane making up the remaining 2%.

* Clouds: Titan's clouds are mainly composed of methane, ethane, and other hydrocarbons. While they can be thick and dense, they don't block out all sunlight.

* Ammonia: Ammonia is present in Titan's atmosphere but in much smaller amounts than methane. It does form clouds, but these are typically very high in the atmosphere and don't obscure the surface from view.

So, instead of a thick blanket of ammonia ice, Titan's atmosphere features a hazy, orange-hued smog created by hydrocarbons, giving it a unique and intriguing appearance.

I hope this helps!