  Jeans's (1902 & 1929) linear gravitational instability criterion gives truly
spectacular errors in its predictions of cosmological structure formation
according to Gibson's (1996) new nonlinear theory. Scales are determined by
viscous or turbulent forces, or by diffusivity, at Schwarz length scales L_SV,
L_ST, or L_SD, respectively, whichever is larger. By these new criteria, void
formation begins in the plasma epoch soon after matter dominates energy, at L
approx L_SV = (gamma nu / rho G)^1/2 scales corresponding to
protosuperclusters, decreasing to protogalaxies at the plasma-gas transition,
where gamma is the rate-of-strain of the expanding universe, nu is the
kinematic viscosity, rho is the density, and G is Newton's gravitational
constant. Condensation of the primordial gas occurs at mass scales a trillion
times less than the Jeans mass to form a `fog' of micro-brown-dwarf (MBD)
particles that persist as the galactic baryonic dark matter, as reported by
Schild (1996) from quasar-microlensing studies. Nonbaryonic dark matter
condensation is prevented by its enormous diffusivity at scales smaller than
L_SD = (D^2 /rho G)^1/2, where D is the diffusivity, so it forms outer halos of
galaxies, cluster-halos of galaxy clusters, and supercluster-halos.
