From: fortunati.luigi@gmail.com   
      
   In the K reference frame of A, point P approaches at gamma=4:   
   A--------------------P-->x   
      
   At a time and an unknown position, start a bright pulse from P to A.   
      
   The pulse reaches A when the AP distance is equal to 5-year-light.   
      
   Find (in reference K) at which spatial and temporal distance was P   
   compared to A when the pulse started.   
      
   --   
   Ce l'ho messa tutta ma non sono riuscito a costringere la mia ragione   
   ad accettare l'irrazionale.   
   Luigi Fortunati   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)