I was reading the other day about John Tyndall, who I believe was the first person to discover that because blue wavelengths are relatively short, they scatter and disperse more than red wavelengths. At this point I remembered that Einstein’s original theory of relativity had included a universal constant to counter-act universal expansion. If I recall correctly the main reason why this was later discarded was Hubble’s observation of red shift in cosmological bodies. So my question is this: If blue wavelengths scatter more than red, then could this not explain cosmological red shift? In fact it seems to me this would also explain why bodies that are further away, seem to be red shifting more. Or to put it another way, the farther a body is from earth, the more the blue wavelengths disperse before they reach us, leaving only the relative long and concentrated red wavelengths. I’m not trying to put forth that this idea might be right, in fact if I were right I’m sure Einstein himself would have thought of this. I’m simply hoping one of you physics guru’s might explain why I’m wrong. Thanks in advance. Shawn Wheeler P.S. It occurs to me it might have something to do with the rate at wich blue wavelengths disperse.