A new study has found that light pollution is making the night sky brighter and the stars dimmer. The study examined data from more than 50,000 citizen star watchers across the world. It found that man-made, or artificial, lighting is making the night sky about 10 percent brighter each year. Data for the study was collected from 2011 to 2022. The research findings recently appeared in the publication Science. The result was a much faster rate of change than scientists had estimated in the past. “We are losing, year by year, the possibility to see the stars,” said Fabio Falchi. He is a physicist at the University of Santiago de Compostela in Spain.