Relic Radiation and the Modern Cosmological Model

The review considers the contribution of the results of measuring fluctuations of relic cosmic microwave background (CMB) radiation to cosmological model and the latest results of observational cosmology. We discussed the basics of the modern cosmological model, the stages of obtaining information from observational data of the Planck space observatory, namely, analysis of time series of observations, construction procedures maps, pixelation, separation of background components, calculation of the angular power spectrum, and determination of cosmological parameters.