I will briefly summarise the first results of the PLANCK mission, makingmore emphasis on cosmological aspects (although non-related to pure CosmicMicrowave Background anisotropies). I will first introduce PLANCK'sunprecedented view of the Cosmic Infrared Background, and its contraintson the Star Formation history of the universe. I will next address theimplications of PLANCK's observations of clusters of galaxies by means ofthe thermal Sunyaev-Zel'dovich effect, focusing on the constraintsobtained on hot gas sitting on those sources. Finally, I will reviewPLANCK's contribution on the characterization of the extra-galactic radioand infra-red source population, and, if time allows, I will wrap up byquickly addressing PLANCK's major contribution on galactic science.

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