From: dr.j.thornburg@gmail-pink.com   
      
   I wrote:   
      
   > Luigi Fortunati  wrote:   
   > [[question about an apparent paradox involving special relativity   
   > and a rotating reference frame]]   
   >   
   > I think the underlying cause of Luigi's apparent paradox may be that   
   > special relativity implicitly assues that the geometry of space is   
   > Euclidean... but the geometry of a rotating reference frame is non-Euclidean.   
   >   
   > There are interesting and relevant discussions in   
   > [[references]]   
      
   On further thought, I think the questions Luigi raised don't actually   
   involve the rotating-coordinate issues discussed in those references.   
   Instead, Luigi's questions are "just" about what we see if we observe   
   something (Neptune) in a reference frame which is moving *faster*   
   than the speed of light.   
      
   As Phillip Helbig noted, it's easy to see observationally that the   
   answer is "nothing special" -- if you spin your body around at an   
   angular frequency of faster than about 1 revolution per 8 seconds,   
   your body reference frame will have the Moon moving faster than the   
   speed of light, and empirically the Moon looks pretty ordinary   
   when you do this.   
      
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