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" ... DESI is very close to becoming an operational facility. On October 22 of this year, astronomers pointed DESI at the sky, and they observed their first set of galaxies. DESI consists of robotic positioners that allowed it to simultaneously look at 5,000 galaxies. After each set of measurements, the positioners will look at a different set of galaxies. Under ideal viewing conditions, DESI can make a new measurement every twenty minutes. ... "