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The WMAP is to measure the temperature differences in the [[Cosmic microwave background radiation|Cosmic Microwave Background (CMB) radiation]]. The anisotropies then are used to measure the universe's [[geometry]], content, and evolution; and to test the Big Bang model, and the [[cosmic inflation]] theory.<ref name="2003Bennett" /> For that, the mission is creating a full-sky map of the CMB, with a 13 [[arcminute]] resolution via multi-frequency observation. The map requires the fewest [[systematic error]]s, no correlated pixel noise, and accurate calibration, to ensure angular-scale accuracy greater than its resolution.<ref name="2003Bennett">Bennett et al. (2003a)</ref> The map contains 3,145,728 pixels, and uses the [[HEALPix]] scheme to pixelize the sphere.<ref name="2003Bennettb" /> The telescope also measures the CMB's E-mode polarization,<ref name="2003Bennett" /> and foreground polarization; <ref name="2008Hinshaw" /> its life is 27 months; 3 to reach the L2 position, 2 years of observation.<ref name="2003Bennett" />
<nowiki>==Obiettivi==</nowiki>
[[Image:CMB Timeline75.jpg|thumb|La linea del tempo dell'universo, dall'inflazione al WMAP]]
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