  The 2011 Nobel Prize in Physics was awarded for the discovery of accelerating
supernovae dimness, suggesting a remarkable change in the expansion rate of the
Universe from a decrease since the big bang to an increase, driven by
anti-gravity forces of a mysterious dark energy material comprising 70% of the
Universe mass-energy. Fluid mechanical considerations falsify both the
accelerating expansion and dark energy concepts. Kinematic viscosity is
neglected in current standard models of self-gravitational structure formation,
which rely on cold dark matter CDM condensations and clusterings that are also
falsified by fluid mechanics. Weakly collisional CDM particles do not condense
but diffuse away. Photon viscosity predicts superclustervoid fragmentation
early in the plasma epoch and protogalaxies at the end. At the plasma-gas
transition, the plasma fragments into Earth-mass gas planets in trillion planet
clumps (proto-globular-star-cluster PGCs). The hydrogen planets freeze to form
the dark matter of galaxies and merge to form their stars. Dark energy is a
systematic dimming error for Supernovae Ia caused by dark matter planets near
hot white dwarf stars at the Chandrasekhar carbon limit. Evaporated planet
atmospheres may or may not scatter light from the events depending on the line
of sight.
