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For one thing, electromagnetic radiation does not stop moving ever, it is always moving at the speed of light, it never stops. To imagine that the CMBR (relic radiation or not) would just hang about in one place is not justifiable.
So what are we to believe, are we to take for granted that the present day Universe is absolutely quiescent and all of the signals in the hydrogen spectra being received on earth are due to the relic CMBR?
Those CMBR emissions are currently proposed to represent the photons emitted when protons and electrons combined to create the first hydrogen atoms in the universe. Those photons were then stretched by the metric expansion of the universe to a much longer wavelength than they started off as. For that reason, photons emitted by any nearby hydrogen recombination would have much shorter wavelengths and thus would not match those produced by the CMBR.
This does not make sense.
This would be a wonderful explanation IF it is taken for granted that the present day Universe is absolutely quiescent and emits no signal at all that can be traced and put into a graphical representation. This is especially a stretch of the imagination when one remembers the sheer, unimaginable size of these clouds of hydrogen and the violent interactions they are witness, to, the birth of galaxies and stars, the violent merger of Galaxies, the explosion supernovae and so on. Surely anyone with even a bit of imagination would be able to picture the birth of currents as the result of such interactions and the resultant micro-wave radiation.
Unfortunately, like or not the CMBR falls right in the sweet spot of the signal width of the unbelievably massive clouds of hydrogen that populate the Universe.
For that reason, photons emitted by any nearby hydrogen recombination would have much shorter wavelengths and thus would not match those produced by the CMBR.
ANY signal is possible from these clouds given their size and the disturbances they are subject too.
Further how convenient is the presence of this shell that the CMBR is supposed to reflect off?
did not really miss the point that you allude to. What I am trying to get through is that there is practically no reference to sounds and signals that the Universe makes NOW at the present time.
black holes which are constantly forming and disappearing.