The contribution of relative light particles and relative neutrinos in the cosmic
Omega-density parameter (W) was separately calculated based on the data of Wilkinson
Microwave Anisotropy Probe. Also it has been shown that the effect of the relativ
e
particles circulating in the universe in Omega-density parameter is roughly equivalent to
the effect of the Big Bang neutrinos in this parameter and the universe will remain in the
vicinity of the critical situation.