  The changing universe model (CUM) describes galaxy parameter relationships
(SESAPS '03, session EB 2). The CUM must be successfully applied to
cosmological scale observations to be considered a cosmological model. A major
component of current cosmological models is the Hubble constant $H_\mathrm{o}$.
An equation is derived using the CUM model relating redshift $z$ and the
distance $D$ to galaxies and is applied to a sample of 32 spiral galaxies with
$D$ calculated using Cepheid variable stars. The equation predicts a galaxy may
have $z<0$ in special circumstances. Three elliptical galaxies with peculiar
characteristics are discovered to be CUM Sinks. The Sinks give a physical
explanation of the ``Virgocentric infall'' and ``Great Attractor'' observations
without a large, unobserved mass. At low cosmological distances, the equation
reduces to $z \approx \exp(KD) -1 \approx KD$, where $K$ is a constant,
positive value. The equation predicts $z$ from galaxies over 23 Gpc distant
approaches a constant value on the order of 1000. The CUM gives a physical
basis for the Doppler shift of particle photons.
