Strange clouds are visible in this pair of images made during the October 25 Titan flyby. Cassini scientists emphasize the importance of combining high-resolution radar images with those taken by the Visible and Infrared Mapping Spectrometer (VIMS). This pair of images was made at a distance of 9,300 miles (15,000 km) from Titan and shows two views of the area riddled by mountain ranges. Note the bright band of clouds near the bottom of the right-hand image. These clouds probably resulted when methane in Titan's atmosphere cooled and condensed into fog over the mountains, similar to the process that forms orographic clouds on Earth.
NASA/JPL/University of Arizona