Originally Posted By: Bill 6
Originally Posted By: redewenur
(Compton scattering is ruled out by the absence of blurring).

We have no way of knowing if the image of a distant galaxy is blurred or not due to the fact that we can obtain no image which does not contain the intervening particles.

Are you quite sure of that, Bill? Isn't the resolution of the HST and other modern photon receivers - able to 'see' billions of parsecs - sufficient to rule out scattering as the cause of the measured redshift? Have you taken a look at the Hubble Ultra-Deep Field image?

http://en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field

"Time is what prevents everything from happening at once" - John Wheeler