|Mission type||Space telescope|
|Mission duration||Planned: >15 months |
Final: 4 years, 5 months, 8 days
|Manufacturer||Thales Alenia Space|
|Launch mass||1,950 kg (4,300 lb)|
|Payload mass||205 kg (452 lb)|
|Dimensions||Body: 4.20 m × 4.22 m (13.8 ft × 13.8 ft)|
|Start of mission|
|Launch date||14 May 2009, 13:12:02UTC|
|Rocket||Ariane 5 ECA|
|Launch site||Guiana Space Centre,|
|Entered service||3 July 2009|
|End of mission|
|Deactivated||23 October 2013, 12:10:27UTC|
(1,500,000 km / 930,000 mi)
|Diameter||1.9 m × 1.5 m (6.2 ft × 4.9 ft)|
|Wavelengths||300 µm – 11.1 mm (frequencies between 27 GHz and 1 THz)|
The mission improved on observations made by the NASA Wilkinson Microwave Anisotropy Probe (WMAP). Planck provided a major source of information about cosmology and astrophysics. It tested theories of the early Universe and the origin of cosmic structure.
Since the end of its mission, Planck has made the most precise measurements of several key numbers. These include the average density of ordinary matter and dark matter in the Universe, and the age of the universe. Planck is now switched off.
- "The Planck space observatory is integrated on Ariane 5 for Arianespace's upcoming launch". Arianespace. 24 April 2009. Retrieved 31 December 2013.