New York Times (10 June 2016)

Light Pollution Masks the Milky Way for a Third of the World’s Population

Stargazers from around the globe gathered at the Grand Canyon this week to gander upon our galaxy’s grandeur. The national park is hosting its annual star party, an eight-night event inviting the public to observe the heavens free from blinding city lights and street lamps.

“As the sky gets darker after sunset you start to notice something on the eastern horizon that at first you think are storm clouds,” said John Barentine, an astronomer and program manager at the International Dark-Sky Association, a nonprofit group that raises awareness to light pollution. “Then as it gets darker you realize they aren’t clouds in our atmosphere, but they are glowing clouds of stars.”

What he and thousands of visitors witnessed was a sight hidden to many: The Milky Way.

Read more: ​http://www.nytimes.com/2016/06/11/science/milky-way-light-pollution-dark-skies.html