CORRECTS LOCATION TO 56 MILES SOUTHWEST OF TUCSON NOT IN TUCSON The Dark Energy Spectroscopic Instrument (DESI) making observations in the night sky on the Nicholas U. Mayall 4-meter Telescope at Kitt Peak National Observatory located about 56 miles (90 kilometers) southwest of Tucson in the Tohono O’odham Nation. (Peter Toman Tomas Slovinsky/NSF's NOIRLab via AP)