Sustainable Outdoor Lighting Principles - Night Skies (U.S. National Park Service)

Night Skies Resource Brief (U.S. National Park Service)

Cape Lookout National Seashore Certified as an International Dark Sky Park along North Carolina's Coastline

Voyageurs National Park Staff To Discuss Ways To Keep Night Skies Dark

Preserving Our Night Skies - Xanterra Travel Collection®

Preserving Our Night Skies - Xanterra Travel Collection®

Dark Sky Parks & Places - Utah Has The Most On Earth

Preserving the nation's last dark skies

Strong Visitor Support for Steps to Limit Light Pollution (U.S. National Park Service)

Night Skies (U.S. National Park Service)

From Stargazers to Astronomers: The Importance of Dark Skies