... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Cassini sees precursors to aerosol haze on Titan . ... NASA's Cassini spacecraft looks toward the night side of Saturn's largest moon and sees sunlight scattering through the periphery of Titan's atmosphere and forming a ring of color. ... The presence of these complex ringed hydrocarbons, known as polycyclic aromatic hydrocarbons (PAHs), explains the origin of the aerosol particles found in the lowest haze layer that blankets Titan's surface. ...