Huygens reached Titan's surface in January 2005 and returned a scene nobody had drawn in advance: a dark plain of rounded water-ice pebbles under an orange photochemical haze that goes all the way down. Daylight there is about a thousandth of Earth's, and the haze eats the short wavelengths, so everything arrives brown, soft-edged and dim.

This system dresses an instrument for that shoreline. Ligeia Mare is roughly 71% methane, 12% ethane, 17% nitrogen, and reads black to both radar and camera. One way light time is near eighty minutes, so a command and its confirmation are an hour and forty apart — and the interface says so, on every screen, all the time.