NASA is sending a dual-rotor helicopter probe to Titan, a moon of Saturn. If this doesn’t make you click, we’re not sure what will.
Erika K. Carlson and Zach Pace discuss Saturn’s moon Titan and its lakes of methane and ethane. According to data from the Cassini mission, Titan appears to have a sea level, like Earth does. Source: http://www.astronomy.com/news/2018/01/cassini-uncovers-a-sea-level-on-titan-similar-to-earth