XPost: misc.misc   
   From: henry@spsystems.net   
      
   In article ,   
   Rick Jones   wrote:   
   >How much additional shielding/mass did that European lunar probe had   
   >(SMART?) that used an ion engine to spiral out from Earth to lunar   
   >orbit?   
      
   SMART-1 didn't have a lot of shielding, but it did have rad-hard   
   electronics... and it started from GTO, not from low orbit, so it   
   was already partway out of the belts.   
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   "Think outside the box -- the box isn't our friend."    |   Henry Spencer   
                                   -- George Herbert       | henry@spsystems.net   
      
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