If photons lose energy in intergalactic redshift, where does this energy go?
Since the universe is not expanding, the energy lost by photons through intergalactic redshift has to go somewhere. The universe’s primary luminosity is the optical band (UV-red), and when these photons are redshifted they release microwaves directly into the cosmic microwave background (CMB). Although these microwaves are initially collinear with their source photons (in order to conserve energy and momentum) they are quickly (by astronomical standards, at least) scattered by the next link in what is referred to in Our Undiscovered Universe as the cosmic fusion cycle. The CMB’s power spectrum is consistent with this scattering mechanism, but there is far more direct evidence of this process, and it is presented in detail in Part IV of Our Undiscovered Universe. (top) The Chapter 10 excerpt says that an atomic nucleus is composed of electrons and protons. Since electrons, protons and neutrons are all spin 1/2 fermions, doesn’t this violate the conservation of angular momentum? Bound el
