The furthest away (back in time) we can see is the CMB. This was the surface of last scatter, the surface of a hot gas bubble which due to redshift appears today as CMB. The actual temperature of that surface was around 3000 K. Moving from the CMB towards us, the next thing we can observe are early galaxies, I believe that the most distant object detected is a galaxy from around 600 million years after the BB. In my layman's ignorance, it seems as if we can see a ball at 3000 K, then getting closer towards us suddenly we see nothing at all, just black emptiness, and then suddenly 600 million years later we can see some burning stars (which I presume would have temperatures of several thousand K). It would seem that the 3000 K bubble would gradually cool down but still radiate for a while until becoming cold enough as to not radiating anything detectable, and then remain 'black' until stellar fusion would ignite and start radiating visible light again. Right? So it seems to me that in between the CMB and the first visible stars there should still be layered spheres of gradually less intensity, somehow 'blurring' or 'obscuring' the 'sight' of the CMB, as if they were clouds 'just in front of the CMB', until those 'clouds' became thin enough as to become practically undetectable. What's the mistake? how can we 'see' the CMB? what is 'just a bit closer' than the CMB and why is not it (say the surface of the gas when it was at 1500 K) obstructing the CMB view?