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Dodano: 07-07-2010
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(C) Credit ESA.
ESA's Planck satellite unveils the Universe (5 July 2010)
http://www.esa.int/esaCP/SEMF2FRZ5BG_index_1.html
The microwave sky as seen by Planck. This multi-frequency all-sky image of the microwave sky has been composed using data from Planck covering the electromagnetic spectrum from 30 GHz to 857 GHz. The central band is the plane of our Galaxy. A large portion of the image is dominated by the diffuse emission from its gas and dust. The image was derived from data collected by Planck during its first all-sky survey and comes from observations taken between August 2009 and June 2010.
Planck's mission is to scan the entire sky to build the most accurate map ever of the Cosmic Microwave Background (CMB), the relic radiation from the Big Bang. The spacecraft spins at 1 rotation per minute around an axis offset by about 85° so that the observed sky region will trace a large circle on the sky. As the spin axis follows the Sun the circle observed by the instruments sweeps through the sky at a rate of 1° per day. Planck takes about 6 months to complete a full scan of the sky, allowing the creation of two complete sky maps during the nominal mission lifetime (about 15 months).
Kanały:
Animacja
Tagi:
cosmic
microwave
background
planck
satellite
physics
cosmology
science