What is light pollution? Light pollution refers to the various ways in which artificial light can negatively impact our natural environment. The four most common categories of light pollution are urban glow, glare, light clutter, and light trespass.
pano of the Moon and the Milky Way over Lake Tahoe. Light pollution from Placerville (I _think_) way off to the right. - via Classy Bro
Stellar views: stargazing in the Southwest USA
Stargazing in the American Southwest- Whether at deserts campsites, on the top of a sand dune or through a telescope above the Grand Canyon, the Southwest USA's clear, arid weather and lack of light pollution make it one of the best places for stargazing in the country.
An Astronomer's Paradise, Chile May Be the Best Place on Earth to Enjoy a Starry Sky
Chile's northern coast offers an ideal star-gazing environment with its lack of precipitation, clear skies and low-to-zero light pollution
What City Skies Would Look Like Without Light Pollution