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WMAP observes the first light of the universe- the afterglow of the Big Bang. This light emerged 380,000 years after the Big Bang. Patterns imprinted on this light encode the events that happened only a tiny fraction of a second after the Big Bang. In turn, the patterns are the seeds of the development of the structures of galaxies we now see billions of years after the Big Bang.

Credit: NASA / WMAP Science Team

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WMAP # 020622_v2