The paper discusses the formation of galaxies and large-scale structure in the universe using cold dark matter (CDM). CDM is a form of dark matter with negligible velocity dispersion in the early universe, making it non-relativistic and allowing it to dominate gravitational structure formation. The authors argue that CDM is more plausible than other forms of dark matter, such as hot or warm DM, because it explains the observed properties of galaxies and large-scale structure. They compare CDM with other dark matter hypotheses, such as neutrino-dominated models, and find that CDM provides a better fit to observational data. The paper also discusses the implications of CDM for the cosmological density parameter Ω, which is estimated to be around 0.2. The authors conclude that CDM is a promising model for understanding the formation of galaxies and large-scale structure in the universe.The paper discusses the formation of galaxies and large-scale structure in the universe using cold dark matter (CDM). CDM is a form of dark matter with negligible velocity dispersion in the early universe, making it non-relativistic and allowing it to dominate gravitational structure formation. The authors argue that CDM is more plausible than other forms of dark matter, such as hot or warm DM, because it explains the observed properties of galaxies and large-scale structure. They compare CDM with other dark matter hypotheses, such as neutrino-dominated models, and find that CDM provides a better fit to observational data. The paper also discusses the implications of CDM for the cosmological density parameter Ω, which is estimated to be around 0.2. The authors conclude that CDM is a promising model for understanding the formation of galaxies and large-scale structure in the universe.