#PPOD: This image of two moons of Saturn - Titan and Rhea - was captured by NASA's Cassini spacecraft on 10 December 2011. The distance to Titan was 2.038 million km, and to Rhea was 1.329 million km. Note the hazy atmosphere of Titan! Credit: NASA/JPL-Caltech/SSI/CICLOPS/Gordan Ugarković