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Wilkinson Microwave Anisotropy Probe (WMAP)
Official site for this NASA Explorer mission "measuring the temperature of the cosmic background radiation over the full sky with unprecedented accuracy. This map of remnant heat from the Big Bang provides answers to fundamental questions about the origin and fate of our universe." Find images, background documents, essays on cosmology and the big-bang theory, links to technical papers, and more.
http://map.gsfc.nasa.gov

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