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Camera Detects 23 Clues to Cosmic Dawn

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The Dark Energy Camera (DECam) has detected 23 young galaxies, seen as they were 800 million years after the Big Bang occurred. DECam was recently made even more powerful when it was equipped with a special narrowband filter, designed by researchers at Arizona State University (ASU). Milestones in the history of the universe (not to scale). The intergalactic gas was in a neutral state from about 300,000 years after the Big Bang until light from the first generation of stars and galaxies began to ionize it. The gas was completely ionized after 1 billion years. The Lyman Alpha Galaxies in...Read full article

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