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   sci.space.science      Space and planetary science and related      1,217 messages   

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   Message 21 of 1,217   
   Mike Speegle to All   
   Re: Solar sails - impossible?   
   12 Jul 03 13:04:44   
   
   From: mikespeegle@netscape.net   
      
   In news:jjustwwondering  typed:   
   > henry@spsystems.net (Henry Spencer) wrote in message   
   > news:...   
   > > In article ,   
   > > Stanislaw Sidor  wrote:   
   > > > What do you think about the Thomas Gold's article...   
   > >   
   > > It has already been torn to shreds very thoroughly on some of the   
   > > other   
   > > sci.space.* newsgroups.  Gold simply doesn't know what he's talking   
   > > about;   
   > > he's overlooked or misunderstood Doppler shift.  Light pressure has   
   > > been demonstrated many times in the lab, and must be allowed for in   
   > > deep-space   
   > > spacecraft navigation and comsat attitude control.  Its existence is   
   > > beyond question.   
   >   
   > A comet tail is a solar sail...   
      
       Actually a wake as the tail has no effect on the comet head.   
   --   
   Mike   
   ________________________________________________________   
   "Colorado Ski Country, USA"   Come often, Ski hard,   
   Spend *lots* of money, Then leave as quickly as you can.   
      
   --- SoupGate-Win32 v1.05   
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