NASA Cassini orbiter mission photo of Saturn and its moons, Titan (in the center) and Dione (small, to the right), from May 21, 2011.
i like this particular picture of titan because it's the best illustration that titan's atmosphere is, in fact, smog. at least for me, the pictures of titan by itself showing bright orange skies fringed with blue hazes seem more alien than they really are. but here, silhouetted against saturn, we see it's really just a cryogenic los angeles.