NASA has posted their top 10 pictures, and it brings up a question I have concerng the gas giants... Gases are tranluscent. And as atmoshere get further from the planet, they get thinner. Yet instead of hazy outlines of the planets, like I would expect, the limbic edges are always very well defined. Also, the atmosapheres are often described as turbulent, but the edge is a perfectly smooth arc. Even the closest pictures of Saturn and Jupiter fail to show softness on the edges, not irregularity of shape you would expect storms to produce. Are the cameras just not close enough?