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The Dark Energy Spectroscopic Instrument (DESI), a multi-object survey spectrograph installed on the Nicholas U. Mayall 4-m Telescope at Kitt Peak National Observatory, has cataloged more galaxies than all other previous 3D redshift surveys combined, measuring 7.5 million galaxies in only seven months since beginning science operations. Yet it’s only about 10% of the way through its five-year mission. Once completed, that phenomenally detailed 3D map will yield a better understanding of dark energy, and thereby give physicists and astronomers a better understanding of the past — and future — of the Universe. Meanwhile, the impressive technical performance and literally cosmic achievements of the survey thus far are helping scientists reveal the secrets of the most powerful sources of light in the Universe.

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