Planck Collaboration | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-31

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Planck_(spacecraft)


00:02:02 1 Objectives
00:03:39 2 Instruments
00:05:01 2.1 Low Frequency Instrument
00:05:26 2.2 High Frequency Instrument
00:06:50 3 Service Module
00:07:53 3.1 Power Subsystem
00:08:34 3.2 Attitude and Orbit Control
00:09:21 4 Launch and orbit
00:10:44 5 Decommissioning
00:11:46 6 Results
00:13:29 6.1 2013 data release
00:14:47 6.2 2015 data release
00:16:32 7 See also



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SUMMARY
=======
Planck was a space observatory operated by the European Space Agency (ESA) from 2009 to 2013, which mapped the anisotropies of the cosmic microwave background (CMB) at microwave and infra-red frequencies, with high sensitivity and small angular resolution.  The mission substantially improved upon observations made by the NASA Wilkinson Microwave Anisotropy Probe (WMAP).  Planck provided a major source of information relevant to several cosmological and astrophysical issues, such as testing theories of the early Universe and the origin of cosmic structure. Since the end of its mission, Planck has defined the most precise measurements of several key cosmological parameters, including the average density of ordinary matter and dark matter in the Universe and the age of the universe. 
The project was started around 1996 and was initially called COBRAS/SAMBA: the Cosmic Background Radiation Anisotropy Satellite/Satellite for Measurement of Background Anisotropies. It was later renamed in honour of the German physicist Max Planck (1858–1947), who derived the formula for black-body radiation.
Built at the Cannes Mandelieu Space Center by Thales Alenia Space, and created as a medium-sized mission for ESA's Horizon 2000 long-term scientific programme, Planck was launched in May 2009. It reached the Earth/Sun L2 point by July 2009, and by February 2010 it had successfully started a second all-sky survey.  On 21 March 2013, the mission's first all-sky map of the cosmic microwave background was released with an additional expanded release including polarization data in February 2015. The final papers by the Planck team were released in July 2018.At the end of its mission Planck was put into a heliocentric orbit and passivated to prevent it from endangering any future missions. The final deactivation command was sent to Planck in October 2013.