Robin Whittle wrote:
Paul F. Deitz wrote:


That is not the only argument against tired light. The
argument from the CMB radiation is also very strong (tired
light does not preserve 'black body'-ness of a radiation
bath, but the CMB is thermal to very high precision,
requiring incredible coincidences for TL to work.)


I don't assume that the CMB arises from the distant past.

This idea also has insurmountable problems. A thermal
radiation bath must come from an emitter that is optically
thick at the relevant wavelengths (and in thermal equilibrium
with the radiation). The near universe is not optically thick
-- we can see galaxies in millimeter waves out to cosmological
distances.

Paul