"You said there were other worlds than these," Roland said, "and there are. New York in all its multiple whens is only one of many. That we are drawn there again and again has to do with the rose. I have no doubt of that, nor do I doubt that in some way I do not understand the rose is the Dark Tower." - Stephen King, 'The Dark Tower V: Wolves of the Calla'
See the full-size photo, a shot from the Hubble telescope, at this blog. See, kids – science can be cool.