Water World

Titan is the only moon among the 150-plus in the solar system with a thick atmosphere — its air presses on the surface about 1.5 times harder than Earth's at sea level, roughly what you'd feel at the bottom of a swimming pool

Titan sits 1.4 billion kilometers from the Sun, wrapped in a nitrogen haze so thick that when the European Space Agency's Huygens probe parachuted through it on January 14, 2005, the descent took two hours and twenty-seven minutes.

By Terra Daily Editorial Team · Jul 15, 2026