The astronomers have unveiled the biggest ever three-dimensional map of hydrogen emission from the early universe. The map extends over the interval of 9 to 11 billion years in the past, throughout the universe’s ‘cosmic midday’ when star formation was at its peak, and is assembled from the info collected within the Interest-Eberly Telescope Darkish Power Experiment (HETDEX) that maps the faint Lyman-alpha ultraviolet glow of hydrogen between galaxies. The “sea of sunshine” is invisible till this map is drawn.
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