As the sun slips below the horizon in Arches National Park, daylight’s vibrant reds and oranges give way to a deepening indigo sky, punctuated by a scattering of stars that steadily brighten. The desert air cools, and the massive sandstone arches, which dominate the park by day, shift roles—now acting as natural frames for the glittering cosmos above. On this guided astro-photo, hiking, and stargazing tour, travelers step softly onto the North and South Windows trailhead, trading the daytime bustle for a rare solitude punctuated only by the murmur of nocturnal wildlife.