Haven't we all played this game in our childhood "spot an animal/creature in cloud formations?"
Well, I spotted one in the nebula. Take a look at the right side of the picture, right in the middle (where colors are more red then violet). What do you see? I see a sleeping moon. It's looks like a graphic representation of a sleepy moon. Exactly like in this picture, just in another angle:
http://www.geocities.com/SiliconValley/Peaks/2509/GIF_cartoons/Sleepy_moon.gif
What do you say about that! LOL :)