Sustainable Outdoor Lighting Principles - Night Skies (U.S. National Park Service)
By A Mystery Man Writer
Description
Measuring Night Sky Brightness - Night Skies (U.S. National Park Service)
Advancing responsible outdoor lighting
Using Dark-Sky Approved Lighting to Reduce Light Pollution
The Problems of Light Pollution, At the Smithsonian
5 International Dark Sky National Parks in the American West - Off the Beaten Path
Best Places to See Stars - Uncommon Path – An REI Co-op Publication
Indicators and standards of quality for viewing the night sky in the national parks (U.S. National Park Service)
Energy development equals light pollution for our precious night skies
upload.wikimedia.org/wikipedia/commons/8/81/Melbou
from
per adult (price varies by group size)