Hi, Am I right when I say that the cosmic microwave background is a picture of the radiation left from recombination but that the picture (from COBE or WMAP) that we see today is not exactly the same as it was then due to the redshifting of the radiation particles. The flucuations that we see today are also more apparent now than they have been in the past since the universe was smoother at earlier times. So the pictures we get today from COBE or WMAP are pictures of the CMB NOW not as it was 300,000yrs after the big bang. I think it is really confusing that it is sometimes said that the CMB is a representation of the universe as it was at the time of recombination. Am I on the right track or have I totally misunderstood? A big thanks for anyone who can set me straight!!