From: jvorbrueggen@mediasec.de   
      
   > When an aircraft reaches the speed of sound, a sonic boom is created; what   
   > would happen if something reached the speed of light, would a 'light boom'   
   > be created and what would be the effects?   
      
   Look up "Cerenkov radiation" at any suitable source available to you.   
   Or recall a picture of the ghostly blue shine coming from radioactive   
   material submerged in water.   
      
   Note: You won't see Cerenkov radiation on (near-)vacuum, for obvious   
   reasons.   
      
   	Jan   
      
   --- SoupGate-Win32 v1.05   
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