摘要
Theories on the nucleosynthesis in the very early universe show that the baryonic matter is just a fraction of the cosmic matter. Moreover, the flatness of the space geometry of the universe shows that the cosmic density factor Ω= 1, this means that most of the cosmic matter exists in the form of dark matter. Confirmed by experiments up to the present, neutrino
基金
Project supported by the National Natural Science Foundation of China.
