On 10/10/2010 03:00, Duggy wrote:   
   {snip}   
      
   >> Other science programs can cover Lagrange Points - looks like NASA will   
   >> be building a mini-space station at L1 in a few years time.   
   >   
   > Is a mini minor space station really a good idea?   
      
   Mini minor? - unfortunately NASA cannot afford to build a big spacestation.   
      
   Is a spacestation at L1 a good idea? - Yes.  EML1 is the natural    
   crossroads in space.  This makes the EML1 spacestation a good place to    
   change spacecraft.   
      
   Earth entry spaceships need a point on the front to push through the    
   atmosphere when launched plus a heat shield and parachutes for re-entry.    
     None of these are needed on the Moon and they are the wrong size for    
   Mars.  Lunar landers and Mars Transfer Vehicles can be repaired,    
   refuelled and have air tanks refilled at the EML1 Gateway spacestation.    
     Like a good motel on Earth spaceships can be parked at the    
   spacestation when they are not being used.  Its station-keeping motor    
   can be used to prevent the docked spacecraft from say being blow away by    
   the solar wind.   
      
   Andrew Swallow   
   --- SBBSecho 2.12-Win32   
    * Origin: Time Warp of the Future BBS - Home of League 10 (1:14/400)