Defogging Titan’s methane mystery

New data suggests that the hydrocarbon cycles from the moon’s surface to its atmosphere

Methane fog hovering above Saturn’s moon Titan has cleared away any doubt that the hydrocarbon cycles between the moon’s surface and its atmosphere, planetary scientists say.

TITAN’S FOG Arrows point to bright patches identified as methane fog just above Titan’s south pole. The discovery of the fog clinches the case that methane cycles between Titan’s atmosphere and surface, just as water does on Earth, researchers say.