From: ram@zedat.fu-berlin.de   
      
   Jan Panteltje  wrote or quoted:   
   :Neutrinos pass through us all the time too, one in many does some interaction?   
      
     Over a man's lifetime, you're looking at only a handful of neutrinos   
     (none, one, or maybe ten-ish) actually hitting a particle in his body.   
      
   :If space is filled with those and 'photons' encounter those then 'tired   
   light' (redhift) would happen?   
      
     Photons and neutrinos don't share an interaction channel, so they just   
     pass right through each other. There's a theoretical pathway with vir-   
     tual particles where some interaction could happen, but it's negligi-   
     ble to the point of being a non-issue.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)