Planck
Space probe
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Planck was a space observatory operated by the European Space Agency from 2009 to 2013. It was an ambitious project that aimed to map the anisotropies of the cosmic microwave background at microwave and infrared frequencies, with high sensitivity... Wikipedia
Launch date: May 14, 2009
Contractor: Arianespace
COSPAR ID: 2009-026B
Entered service: 3 July 2009
Launch mass: 1,950 kg (4,300 lb)
Mission duration: Planned: >15 months; Final: 4 years, 5 months, 8 days
Reference system: Sun-Earth L2 orbit; (1,500,000 km / 930,000 mi)