Even in remote West Texas, Catherine Arnold writes, an observatory’s stargazing powers can be threatened by city lights. For Alcalde, the University of Texas alumni magazine, Catherine interviews the coordinator of an initiative that protects the night sky for science. The approach isn’t to decrease nighttime visibility for nearby residents and industries, but to promote use of lighting with less glare and waste. Catherine tweets @TreesWhales and curates an excellent science writer guide. image: USDA