Ah... thanks for that sis'. I'm pretty-sure I heard back in the '90s that it was 9" but I'm guessing measuring techniques have since been refined. That'd 'splain it at any rate.
As for the sun, that's interesting. It's "common knowledge" that its size is shrinking 0.1% per 100 years and mass along with it.
To a luddite like me, I "see" it shrinking in size and mass and I "know" it's "burning" 5 million tonnes of fuel a second, so I put 2 and 2 together and I think, how the Hell could it be billions, even millions of years old then, and further to that, how long does it really have left? Peeps say billions of years. I'm not buying any of that; it doesn't make sense... to me at least.
Given this shrinkage how the Hell could we end up with so many "stable" orbits (they're all decaying IIRC)? The only logical explanamation to me is that everything was "spun-up" perfectly to begin with and the gradual decays inevitably ensued.
At the end of the day I like to plead ignorance upfront but that doesn't stop my specumalatin'.