Planck highlights the complexity of star formation   An active star-formation region in the Orion Nebula, as seen By Planck. This image covers a region of 13x13 degrees. It is a three-colour combination constructed from three of Planck's nine frequency channels: 30, 353 and 857 GHz. Download the individual channels: Orion 353 Green Channel | Orion 857 Blue Channel | Orion 30 Red Channel   A low activity, star-formation region in the constellation Perseus, as seen with Planck. This image covers a region of 30x30 degrees. It is a three-colour combination constructed from three of Planck's nine frequency channels: 30, 353 and 857 GHz. Download the individual channels: Perseus 353 Green Channel | Perseus 857 Blue Channel | Perseus 30 Red Channel   The region of sky covered by the Planck images is shown on a view of half the sky as seen in visible and infrared light. The smaller patch corresponds to Orion and the larger to Perseus. Release date: 27 April 2011