Saturn’s large moon Titan has a thick atmosphere of mostly nitrogen. The surface is covered with ice and liquid methane. Evidence suggests the presence of a water-ammonia ocean under the surface, where the temperature is warmer. Do you think there is anything alive down there?
And even if there turns out not to be anything alive down there, don’t you think it would be a good idea to land a methane-burning power plant on the surface as soon as possible, as the first step in developing an infrastructure?
Other Titan-related dreaming is welcome; that’s why I put this in IMHO.