人工夜空亮度
(原标题: Artificial Night Sky Brightness)
2023-03-08
浏览次数: 19
暗淡的星星都到哪里去了？从地球上的许多地方，包括主要城市，夜空已经从数千颗恒星的迷人展示减少到只有几颗恒星可见的漫射光。这张特色地图显示了地球上发生的光污染的相对数量。污染的原因是人造光被大气中的分子和气溶胶反射。例如，美国东部和西欧部分地区的人造红色夜空的亮度是自然天空的十倍以上。在任何标记为橙色或红色的区域，我们银河系的中心带都不再可见。国际黑暗天空协会建议使用普通类型的固定装置，这些固定装置提供的光污染相对较少。点亮你的内部夜空：随机APOD生成器
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Where have all the dim stars gone? From many places on the Earth including major cities, the night sky has been reduced from a fascinating display of thousands of stars to a diffuse glow through which only a few stars are visible. The featured map indicates the relative amount of light pollution that occurs across the Earth. The cause of the pollution is artificial light reflecting off molecules and aerosols in the atmosphere. Parts of the Eastern United States and Western Europe colored red, for example, have an artificial night sky glow over ten times that of the natural sky. In any area marked orange or red, the central band of our Milky Way Galaxy is no longer visible. The International Dark Sky Association suggests common types of fixtures that provide relatively little amounts of light pollution. Light Up Your Internal Night Sky: Random APOD Generator