Paris, 27 march 2013

Planck sheds new light on the Big Bang

After fifteen months of observation, the European Space Agency (ESA)'s spacecraft Planck, launched in 2009 to observe the cosmic microwave background (the relic radiation from the Big Bang), has delivered its first results. The wealth of information they provide about the history and composition of the universe includes in particular: the most accurate map of the cosmic microwave background ever obtained; evidence of an effect predicted by inflationary models; a lower value for the expansion rate of the universe; and a new estimate of its composition. Much of this data was collected by Planck's main instrument, HFI, which was designed and assembled under the supervision of the Institut d'Astrophysique Spatiale (CNRS/Université Paris-Sud) with funding from CNES and CNRS.

To download the press release : Planck


Jean-Loup Puget l T + 33 1 69 85 86 65 l
François Bouchet l T + 33 1 44 32 80 95 l
Cécile Renault l T + 33 6 81 63 09 98 l

CNRS press office l Julien Guillaume l T + 33 1 44 96 46 35 l


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