The Europans provision the JJ for the voyage. They have learned to live together despite the harsh conditions and short supplies. Titan has an ethane ocean with a single prominent continent. It is the only solar system moon with a significant atmosphere. That atmosphere is like very thick smog composed of molecular nitrogen.
Surface pressure is twice that of Earth.
Solar winds produce spectacular lighting like streaks through the upper atmosphere, dimly visible at the surface. Although the surface is ice, it is pelted with a constant rain of ethane. The station on the surface had just landed when contact with Earth was lost. During the period out of contact, organic lifeforms have been discovered which are similar to those hypothesized to have existed on Earth in the very beginning of life. Despite this discovery, the survivors have endured very harsh conditions.