  We ask if the conventional variable separation techniques in the studying of
standard cosmology and the collapsing of extremely dense stars introduce
Newton's absolute space-time concepts. If this is the case, then a completely
relative cosmology is needed. We build the basic frame-works for such a
cosmology and illustrate that, the observed luminosity-distance v.s. red-shift
relations of supernovaes can be explained naturally even without any conception
of dark energies.
