A framework for the next generation of stationary cosmological models
  According to a tired-light cosmological model where H(z) = H(0) (1 + z), the
number density of galaxies has been nearly constant over the last 10 Gyr, at
least, meaning that, as far as galaxies are concerned, the Universe has been
stationary. On the other hand, an analysis of the luminosity distances of
quasars and supernovae Ia shows that the Universe is far from being as
transparent as assumed nowadays, the photon lifetime along the line-of-sight
being one third of the Hubble time. The tired-light model advocated in the
present study would be falsified if, for instance, the time-dilation of remote
events were shown to have a general character, that is, if it were definitely
observed for phenomenons other than the light-curves of supernovae Ia.
