摘要
在我们头顶上方的城市强光下,大多数星星都看不到了。在最好的情况下,我们能看到的也只是银河光带的一小部分:一千亿颗星星汇合起来的光芒在明亮的路灯和店面的映衬下变得近乎虚无。这就是光污染,人造光源投射到天空中,导致天空本身发亮,冲淡了星光。
Most stars are invisible against the overhead glare from city lights.At best,there is only a hint of the Milky Way to see:the combined radiance of a hundred billion stars dims to near nothingness by bright streetlamps and storefronts.This is light pollution-human-generated lights cast up into the heavens-causing the sky itself to glow and washing out the stars.
