国际暗天协会
- 网络International Dark-Sky Association
国际暗天协会-
国际暗天协会（TheInternationalDarkSkyAssociation）估计，不必要或低效的人造光源每年浪费约30亿美元。
The International Dark Sky Association estimates that unnecessary or inefficient4 artificial light wastes about three billion US Dollars every year .
-
纳米比亚的自然保护区是由国际暗天协会评定的，第一个实现黄金级暗天状态的自然保护区。这意味着那里的天空质量很适合眺望。
The NamibRand Nature Reserve in Namibia was the first reserve to achieve Gold Tier dark-sky status from the International Dark-Sky Association , which means its sky quality is ideal for stargazing .