The role of massive dark matter in the universe is pivotal for understanding cosmic structure and evolution. Although dark matter is invisible and does not emit light, it exerts gravitational influence on visible matter, radiation, and the overall structure of the universe. It composes approximately 27% of the universe's total mass-energy content, helping to shape galaxies and holding them together against the dispersing force of dark energy. The gravitational pull of dark matter is essential in the formation of galaxies and galaxy clusters, contributing to the large-scale structure of the universe.