Artificial light pollution erases stars twice as fast as satellites measured. A child seeing 250 stars today may see fewer than 100 by age eighteen. This trend shows sky brightness increasing by 9.6 percent annually on average. Satellites missed much blue light and sideways emissions contributing to skyglow. Human observers measure visible stars, which differs from satellite radiance records.

The artificial glow of the night sky is commonly known as skyglow, and it represents a growing form of light pollution that is changing the way humans view the natural world.…

Artificial light pollution erases stars twice as fast as satellites measured. A child seeing 250 stars today may see fewer than 100 by age eighteen. This trend shows sky…