L. Marmet, "On the Interpretation of Spectral Red-Shift in
Astrophysics: A Survey of Red-Shift Mechanisms - II" arXiv:1801.07582
Cosmology calculator https://cosmology.info/code/marmet_l/cosmology-calculators.html
Today's cosmological model is more intricate than
Ptolemy's, but we still are at the (temporal) centre of the
universe, the crystal spheres have been replaced by dark matter,
and the divine is at the periphery.