Planck Satellite
The Planck satellite is a ESA mission devoted to study of the CMB anisotropies, providing the most complete picture up to date of the first light emitted in the universe. The high sensitivity and resolution achieved by its two instruments (LFI and HFI), have gave us the best determination of the cosmological parameters defining the properties of the universe (expansion history and matter/energy contain), as well as, a wealth of information related to the physics of inflation, the secondary anisotropies, and the Galaxy emissions, among other examples.
For more information see: https://www.cosmos.esa.int/web/planck
