XPost: sci.space.policy   
   From: g_d_pusch_remove_underscores@xnet.com   
   Copy: rstokes1@san.rr.com   
      
   "Roger Stokes"  writes:   
      
   > "Gordon D. Pusch"  wrote in message   
   > news:gid690nnik.fsf@pusch.xnet.com...   
   >> He3 is a rare isotope, cosmically speaking --- only 1.37 ppm of all helium   
   >> is He3.   
   >>   
   >>> Probably makes more sense to use solar cells instead.   
   >>   
   >> Especially since we haven't a =CLUE= how to burn He3 in a fusion   
   >> reactor, and if Todd Rider's Ph.D. Dissertation is correct, there may be   
   >> be fundamental thermodynamic reasons why =ANY= He3-burning "reactor"   
   >> smaller than a brown dwarf will consume more energy than it generates...   
   >   
   > Even at .7 ppb of the Earth's atmosphere, I assume it must still be   
   > cheaper right now to refine it on Earth and try some fusion experiments,   
   > rather than go to the moon to get it - what's the reason it hasn't been   
   > done?   
      
   Apparently you haven't been paying attention: We can't even ingite   
   the _EASIEST_ fusion reaction, D/T, yet (except in bombs) and He3   
   is _MORE THAN AN ORDER OF MAGNITUDE HARDER TO INGITE_ than D/T.   
   So there's no _point_ in attempting to try it !!!   
      
      
   -- Gordon D. Pusch   
      
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