From: g_d_pusch_remove_underscores@xnet.com   
      
   Matthew Montchalin  writes:   
      
   > On Fri, 12 Dec 2003, Russell Wallace wrote:   
   >> Solid planets three times Earth's diameter? i.e. with more than 27   
   >> times the mass? (Presumably considerably more than 27 times, since the   
   >> core would be pretty compressed at that stage.) Is that really   
   >> possible?   
   >   
   > They probably wouldn't rotate as fast, would they?   
      
   Actually, to the extent that our own (apparently anomolous) solar system   
   is any guide, and to the degree the numerical simulations are accurate,   
   large planets tend to rotate _faster_ than small planets, because being   
   more compact, they have smaller radii of gyration (moment of inertia per   
   unit mass).   
      
      
   -- Gordon D. Pusch   
      
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