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 / With most of the planet’s landmass impacted by light pollution, the remaining dark sky places are natural treasures, both to observe the vastness of universe and as refuges for nocturnal species. This is a self-portrait on a lake in California's SIerras. Explore more of our planet's wonders at night @babaktafreshi and learn more about light pollution and how we can reduce it on darksky.org @idadarksky. #twanight #darkskies #lightpollution #nightsky」1月1日 12時34分