Lambda-CDM Model

The Lambda-CDM model is the leading framework for understanding the universe's composition and evolution. It describes a universe made up of dark energy (Lambda), which drives accelerated expansion; cold dark matter (CDM), providing the unseen mass that helps galaxies form; and ordinary matter, like stars and planets. This model explains observations such as the universe's large-scale structure, cosmic microwave background radiation, and the accelerating expansion, offering a comprehensive picture of how the universe started, developed, and continues to grow.