| Date | Event |
|---|
| May 14 2009 | Planck is launched, on an Ariane 5 rocket from ESA's Spaceport in French Guiana, into its planned trajectory towards L2. |
| July 3 2009 | Planck arrives at L2 and its payload and all the spacecraft subsystems work at nominal temperatures. |
| August 13 2009 | Planck starts its first all sky survey after successfully concluding its commissioning phase. |
| September 17 2009 | Planck yields promising results. Visit the first Planck post launch press release and more in depth. |
| December 23 2009 | Pre-release of Planck's internal archive for scientific exploitation within the Planck collaboration. |
| December 29 2009 | A set of 21 pre-launch papers reporting on technical aspects concerning the Planck LFI are published by JINST. |
| January 15 2010 | ESA approves an extension of Planck operations by 12 months. Planck is scheduled to continuously acquire high-quality science data until the end of 2011. |
| February 14 2010 | Planck starts its second all sky survey after successfully concluding its first survey. |
| March 1 2010 | First data release of Planck's internal archive for scientific exploitation within the Planck collaboration. |
| March 17 2010 | New Planck images trace cold dust and reveal large-scale structure in the Milky Way. Visit the second Planck post launch press release. |
| April 26 2010 | Planck highlights the complexity of star formation. Visit the third Planck post launch press release. |
| April 26 2010 | Planck LFI completes coverage of 100% of the sky. |
| May 28 2010 | Planck HFI completes coverage of 100% of the sky. |
| July 5 2010 | ESA’s Planck mission delivers its first all-sky image. Visit the fourth Planck post launch press release. And check Planck's first all-sky image on Chromoscope. |
| August 14 2010 | Planck starts its third all sky survey after successfully concluding its second survey. |
| August 17 2010 | Second data release of Planck's internal archive for scientific exploitation within the Planck collaboration. |
| September 15 2010 | A set of Planck pre-launch papers appears on a special feature of Astronomy and Astrophysics, Vol. 520 (September-October 2010). |
| September 15 2010 | Planck's first glimpse at galaxy clusters and a new supercluster. Visit the fifth Planck post launch press release. |
| November 26 2010 | Planck successfully ends its 15 months nominal mission, and starts its extended mission. Planck is planned to continue surveying the sky until the exhaustion of its cryogenic consumables. |
| January 11 2011 | ESA and the Planck Collaboration deliver to the public the Early Release Compact Source Catalogue, together with a set of 25 scientific papers. |
| February 14 2011 | Planck starts its fourth all sky survey after successfully concluding its third survey. |
| June 7 2011 | Planck detects, and XMM-Newton confirms, an exceptionally X-ray luminous and massive galaxy cluster at z~1. Get to know more on arXiv astro-ph. |
| July 21 2011 | Third data release of Planck's internal archive for scientific exploitation within the Planck collaboration. |
| July 29 2011 | Planck starts its fifth all sky survey after successfully concluding its fourth survey. Planck has been acquiring high-quality science data for more than 100 weeks, the spacecraft remains extremely healthy, and operations continue flawlessly. |
| August 4 2011 | Planck, Swift, and Fermi release simultaneous observations of X-ray and gamma-ray selected blazars. Get to know more on arXiv astro-ph. |
| December 1 2011 | A collection of 26 articles presents the 1st year of operations of Planck; the performance of its payload; the Early Release Compact Source Catalogue (ERCSC), and the first scientific results covering both galactic and extragalactic sources. |
| December 23, 2011 | Further results from the ongoing XMM-Newton follow-up of Planck clusters, detailing X-ray observations of 11 candidates, are made available on arXiv astro-ph. |
| January 14, 2012 | Planck’s HFI completes its survey of early Universe. The sensor ran out of coolant on January 14 2012 as expected, ending its ability to detect this faint energy. Read full story. |
| January 30, 2012 | Planck-LFI starts its sixth all sky survey. |
| January 31, 2012 | ESA and the Planck Collaboration have released a revised version of the ERCSC. |
| February 8, 2012 | Planck completes 1000 days in space. |
| February 13, 2012 | Planck releases all-sky images of distribution of carbon monoxide, and of a mysterious Galactic Haze. Read full story. |
| February 13, 2012 | Planck releases intermediate results focussed on Galactic and extragalactic science. See Planck publications. |
| March 21, 2013 | Planck 2013 results are made public. |
