The Wilkinson Microwave Anisotropy Probe (WMAP) was a NASA spacecraft that measured the Cosmic Microwave Background radiation from 2001 to 2010. It was placed in a halo orbit around the Sun-Earth Lagrange-2 point, and its findings helped advance our knowledge of the universe itself
Seven-year WMAP image of cosmic microwave background (CMB) radiation published in July 2010
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