From: helbig@asclothestro.multivax.de   
      
   In article ,   
   toadastronomer@gmail.com writes:   
      
   > Could dark matter/energy in this sense, be responsive   
   > to neutrino pressure so that neutrinos, in perpetuity,   
   > drive the resistance to gravitational collapse of the   
   > whole thing, and hence the (accelerating) expansion?   
      
   No.   
      
   Dark energy and dark matter are not the same.  Any reaction with   
   neutrinos would be far too weak to have observableeffects.  Acceleration   
   is not necessary to avoid collapse.  The cosmological constant is a   
   perfectly good explanation for the accelerated expansion.   
      
   When proposing something like this, at the very least you have to have a   
   back-of-the-envelope calculation showing that the magnitude of the   
   effect is at least in the right ballpark.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)