The Existential Wonder of Space
Illustrations by Daniele CastellanoOf all the moons in the solar system, Saturn’s largest satellite might be the most extraordinary. Titan is enveloped in a thick, hazy atmosphere, and liquid methane rains gently from its sky, tugged downward by a fraction of the gravity we feel on Earth. The methane forms rivers, lakes, and small seas on Titan’s surface. Beneath the frigid ground, composed of ice as hard as rock, is even more liquid, a whole ocean of plain old H2O.