The most serious anomaly is a deficit in the signal at large angular scales on the sky, which is about ten per cent weaker than the standard model would like it to be. At the same time, the extraordinary quality of the Planck data reveals the presence of subtle anomalies in the CMB pattern that might challenge the very foundations of cosmology. In the standard model, the Universe is described as homogeneous and isotropic on very large scales, and cosmic structure is the result of the slow growth of tiny density fluctuations that arose immediately after the Big Bang. Credit: ESA and the Planck Collaborationįor the most part, the data agree extremely well with the 'standard model of cosmology' and allow for a much improved measure of its parameters. The Cosmic Microwave Background - as seen by Planck. The image has provided the most precise picture of the early Universe so far.
Simple but challenging: the Universe according to PlanckĮSA's Planck satellite has delivered its first all-sky image of the Cosmic Microwave Background (CMB), bringing with it new challenges about our understanding of the origin and evolution of the cosmos.
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