Ok, this is sort of an easy one, because it's one of the most recognizable and scientifically interesting bodies in our solar system. But I'd like you not just to name this world correctly, but also to tell me why the attached quote by Carl Sagan is relevant. No, I'm not asking for an opinion paper, but rather for a very specific characteristic of this world, and the tantilizing possibilities that it suggests. (Scroll to bottom for full image)

Plus, I'm going to make it worth your while this time!  The first correct answer receives a real prize, and you won't believe how generous it is. Provide the answer I'm looking for and I'll foot the bill to fly you and a loved one to the very same heavenly body you're identifying, just as soon as commercial flights become available. I know, I must be KER-AZY right?

Of course, the quote is relevant for reasons other than the one I'm alluding to.  Like everything Sagan said, it's a poetic summation of the beauty one encounters when using science as a lens. It artfully portrays Sagan's wonder for both the natural world and the scientific enterprise. And while I'm tickled to put his words on to one of my creations, they really deserve to be carved into monuments. As is obvious to any regular reader, for his unique combination of gifts, the man is a personal hero of mine.

This is my third Poster-Quote, and the second inspired by the work of James White.