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Titan and Saturn have very few things in common, but a hazy appearance is one feature they share. Although their faces seem similar in images like this, appearances can be misleading. Both Saturn and Titan have thick atmospheres, in a relative sense. But Saturn is a gas giant, covered in clouds, with no solid surface to speak of. Titan's atmosphere is a blanket of dense haze -- a photochemical smog -- surrounding an icy, solid body. Even their atmospheric compositions are different; Saturn is mostly hydrogen and helium with clouds of water, ammonia and ammonium hydrosulfide. Titan's atmospher…
