The LCDM (Lambda Cold Dark Matter) is a parameterisation of the Big Bang cosmological model in which the universe contains three major components: a cosmological constant denoted by Lambda (Greek Λ) and associated with dark energy; the postulated cold dark matter (abbreviated CDM); and ordinary matter. The LCDM model is the currently accepted standard model of cosmology, as it provides a framework that successfully explains a wide range of cosmological observations, including the cosmic microwave background radiation, the large-scale distribution of galaxies, and the accelerated expansion of the universe.
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