Planck CMB sky. Top panel: 2018 SMICA temperature map. Middle panel: polarization field as rods of varying length superimposed on the temperature map, with both smoothed to 5°. This smoothing is done for visibility purposes; the enlarged region presented in Fig. 7 shows that the Planck polarization map is still dominated by signal at much smaller scales. Both CMB maps have been masked and inpainted in regions where residuals from foreground emission are expected to be substantial. This mask, mostly around the Galactic plane, is delineated by a grey line in the full resolution temperature map. Bottom panel: Planck lensing map (derived from ∇ϕ, that is, the E mode of the lensing deflection angle), specifically a minimum variance, Wiener filtered, map obtained from both temperature and polarization information; the unmasked area covers 80.7% of the sky, which is larger than that used for cosmology.