Re: OT: The solar system has 12 planets
I think one of the criteria of a planet should be it's gravitational effect on the rest of the solar system. I had a solar system simulator at one point that showed that if you took any one of the 9 'classical' planets out of the solar system, then the other 8 planets went all squirrely. I have no idea what the magic cutoff point would be, but how many of the larger Kuiper Belt objects or even large asteroids (like Ceres) have that sort of effect?
Of course, according to Alf, the 10th planet in our system is named Alvin, not UB313
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Nick (bearclaw)
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