  Sir James Jeans's (1902 and 1929) linear, acoustic, theory of gravitational
instability gives vast errors for the structure formation of the early
universe. Gibson's (1996) nonlinear theory shows that nonacoustic density
extrema produced by turbulence are gravitationally unstable at turbulent,
viscous, or diffusive Schwarz scales L_ST, L_SV, L_SD, independent of Jeans's
acoustic scale L_J. Structure formation began with decelerations of 10^46 kg
protosuperclusters in the hot plasma epoch, 13,000 years after the Big Bang,
when L_SV decreased to the Hubble (horizon) scale L_H equiv ct, where c is
light speed and t is time, giving 10^42 kg protogalaxies just before the cooled
plasma formed neutral H-He gas at 300,000 years. In 10^3 years this primordial
gas condensed to 10^23 - 10^25 kg L_SV - L_ST scale objects, termed
``primordial fog particles'' (PFPs). Schild (1996) suggested from continuous
microlensing of quasar Q0957 + 561 A,B that the mass of the 10^42 kg lens
galaxy is dominated by 10^23 - 10^25 kg ``rogue planets ... likely to be the
missing mass''. A microlensing event seen at three observatories confirms
Schild's (1996) claims, and supports Gibson's (1996) prediction that PFPs
comprise most of the dark matter at galactic scales.
