From: Harri.Tavaila@roskis.helsinki.fi.retro.com   
      
   "Allen Thomson"  kirjoitti viestissä   
   news:501f9880.0404260844.4d8a7801@posting.google.com...   
   > Earl Colby Pottinger  wrote   
      
   > One light year seems pretty ambitious, but has anybody   
   > actually done a study of the signatures a large body would   
   > generate moving through the interstellar medium at close   
   > to the speed of light?   
      
   1987Natur.330..455Y   
      
   Abstract   
   A highly unusual radio source lying within 1 deg of the Galactic center has   
   been discovered whose 'cometary' morphology suggests that it is a wake   
   produced by a radio source moving supersonically with respect to the ambient   
   interstellar medium. Maps of the source are shown, and its characteristics   
   are discussed. Two possible models which might explain the wake are   
   suggested.   
      
   H Tavaila   
      
   --- SoupGate-Win32 v1.05   
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