Final answer:
Liquid water rainfall is not expected on Titan, as its hydrological cycle involves liquid methane and ethane due to the extremely cold temperatures that solidify water into a rock-hard state. Titan's thick atmosphere and surface features provide evidence of a methane-ethane cycle that mirrors Earth's water cycle, but with hydrocarbons instead.
Step-by-step explanation:
No, we would not expect to see liquid water rainfall on Saturn's moon, Titan. Unlike Earth, Titan experiences a different kind of cycle with liquids that have much lower freezing points than water. Titan's thick atmosphere, which is even denser than Earth's, is composed predominantly of nitrogen, with traces of methane and other organic compounds. NASA's Cassini-Huygens mission provided substantial evidence for a meteorological system akin to our water cycle, but with a critical difference: the presence of liquid hydrocarbons like methane and ethane, rather than water.
At the cold temperatures found on Titan, water is as hard as rock, and therefore it cannot participate in the moon's version of a hydrological cycle. What has been observed are methane lakes, ethane rivers, and erosional features that suggest methane and ethane can condense and fall as rain. This process forms clouds and eventually precipitates, flowing into larger bodies of liquid, much like the water cycle on Earth. However, it's important to underline that on Titan, this cycle involves liquid methane and ethane - not water.