Lambda Cold Dark Matter (ΛCDM)

Lambda Cold Dark Matter (ΛCDM) is the leading scientific model describing the universe's structure and evolution. It proposes that the universe consists of regular matter (like stars and planets), cold dark matter (an invisible form of matter that interacts through gravity), and dark energy (represented by Lambda, Λ). Cold dark matter helps explain how galaxies form and cluster, while dark energy causes the universe’s expansion to accelerate. Together, this model accurately fits a wide range of observations about the cosmos, providing a comprehensive framework for understanding its past, present, and future.