newtboy says... The good wishes are appreciated. Having a twice broken back sucks. I think people see 'coincidence' and think it's amazing or supernatural, but they don't see the billions of non-coincidences that DON'T happen daily. If they could see every possible coincidence, the ones that come to pass would seem far more ordinary. In your analogy, I would first think perhaps there's a problem with their ammo/guns, then I might think they are all horrible shots, THEN I might think they might have missed on purpose. What I would not think is that god stopped the bullets! Because something could have been by design does not mean it IS. shinyblurry said: it's been a really bad week for my back and lots of meds have been needed, which impairs my math skills. My mistake there...and I've retracted that....and I apologize. It's no problem. It's completely understandable for what you're going through over there. I'll say a prayer for you and your family. Hopefully some pain free days are coming your way soon. Doing the math correctly, I see you ARE right that it's about 400 times the distance. But they (and so you) are wrong that it's 400 times the "size". You are right that the radiuses/diameters are a ratio of 400-1. That's different from size, even 2d size. It may seem semantical, but to me it's an important distinction. This is what I took issue with mostly, since I was CERTAIN the actual "size" (in 3D) is no where near a ratio of 400-1, but closer to 64 million -1. Even in 2D it's nothing like 400-1. Point taken..you were just trying to be accurate in the way the terms were defined. Also, I'm not intentionally ignoring your point, it is an interesting fact that the ratios are close, but only coincidental IMO, certainly not 'proof' of anything supernatural. EDIT: even if they were a perfect ratio, it would only suggest a physical law of motion we don't know or fully understand yet. I would be interested to see a list of other planets and their moons to see if any other planet/moon (or combination of moons) in our solar system shows the same ratios. Neither answer would make me think anything supernatural however, it's just not that kind of question in my eyes. Taken by itself, it is an extraordinary coincidence if you deem it as such. Yet, when you pile on the many other factors that have to line up for us to have life here, I find coincidence isn't the appropiate word. Now, some say that because it is such a huge Universe, there are bound to be planets like these (which isn't proven, btw)..and we shouldn't be surprised to find ourselves on one of them because we would expect to find conditions which allow for our existence, given that we exist. I don't think that is a persausive argument. There is a good analogy about this that I borrowed from the net: "Suppose you are to be executed by a firing squad of 100 trained marksmen, all of them aiming rifles at your heart. You are blindfolded; the command is given; you hear the deafening roar of the rifles. And you observe that you are still alive. The 100 marksmen missed!" Taking off the blindfold, you do not observe that you are dead. No surprise there: you could not observe that you are dead. Nonetheless, you should be astonished to observe that you are alive. The entire firing squad missed you altogether! Surprise at that extremely improbable fact is wholly justified - and that calls for an explanation. You would immediately suspect that they missed you on purpose, by design."