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### On Expansion Energy, Dark Energy & Missing Mass

#### Abstract

According to WMAP data, critical density (omega total=1) is composed of density fractions: omega dark=0.718, omega mass=0.235 and omega baryons mass=0.046. The low value for baryons (protons) leads to missing mass. In this paper the author will reanalyze mass fractions with the new understanding that the energy associated with omega dark may be negligible. The author has developed expansion equations that agree with WMAP but are thought to be more fundamental. Based on his model, the author uses 9.8 MeV/particle as the kinetic energy (KE) of expansion. This energy is adequate to expand one half of all mass to 6.33e25 meters and provides further evidence that mass fractions quoted above might be incorrect. Using the WMAP procedure, equality and decoupling were re-analyzed with omega baryons=0.5. Results indicate that the measured CMB spot radius and temperature anisotropy are consistent with the higher baryon content. The author believes that the correct cosmological density parameters are omega dark energy=0, omega baryons=0.5 and omega dark matter=0.5. Further, the author’s expansion model with initial kinetic energy 9.8 MeV/particle has a temperature curve that starts at 7e10 K decreases to temperatures consistent with He4 fusion then increases to account for He4 fusion energy. Subsequent expansion decreases the temperature to 2.73 K indicating that 9.8MeV correctly anticipates the addition of 1.63 MeV associated with He4 fusion. Implications for deuterium primordial abundance are discussed.