More than 80 percent of the world and more than 99 percent of the U.S. and European populations live under light-polluted skies, according to a study and new global atlas of artificial night sky brightness published today in the journal Science Advances. This image of the continental United States at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. The image was made possible by the satellite’s...
