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 In the early morning hours on July 9, I biked to a location north of Boston to see the new comet NEOWISE. Thanks to its five-kilometer-wide icy nucleus, the comet survived a close approach to the sun and is now seen before dawn and at dusk in the northern latitudes (but not in the Arctic where the night is still too bright). It will become visible in the northern tropics after mid-July and then at the equator, and by late July in the Southern Hemisphere—if it's still bright enough to be spotted by the naked eye. (If you are in cities and other light-polluted areas, don’t have high expectations.) The comet appears smaller and fainter to the unaided eye, compared to this telephoto view, unless you use a pair of binoculars or view its true beauty in a dark-sky location. Explore more of night sky wonders with me @babaktafreshi. #twanight #comet #cometneowise #boston #stargazing」7月14日 1時34分