ナショナルジオグラフィックさんのインスタグラム写真 - (ナショナルジオグラフィックInstagram)「Photo by @babaktafreshi | Stars above desert cliffs and clouds are illuminated by the far glow of Los Angeles and Palmdale. The light of Los Angeles, even 90 miles (145 km) north of the city, still affects the sky, illuminating the clouds and Red Rock Canyon State Park, a popular stargazing spot that's relatively close to L.A. Photographed on assignment to document the impact of light pollution and the value of natural nights. We need artificial light for our modern urban life, but a large amount of it is wasted toward the sky and horizon. There is a new generation that has never seen a natural night sky because of the artificial skyglow. Light pollution is not just an astronomer’s problem. It disrupts ecosystems and has health effects on humans, especially when exposed to white-blue LEDs. Follow @babaktafreshi for more of the world at night photography. #saveournightsky #lightpollution #losangeles」4月9日 17時02分