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

Dark Sky Place finder DarkSky International

The world needs dark skies more than ever. Here's why.

Nocturnal conservation and Dark Sky Places

Night Skies (U.S. National Park Service)

Photographing starry skies to shine a light on pollution

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Protecting the Night Sky at Your Home and Community - Night Skies (U.S. National Park Service)

Managing Lightscapes - Night Skies (U.S. National Park Service)

Light Pollution - Night Skies (U.S. National Park Service)

Night Sky - City of Fort Collins

The Problems of Light Pollution, At the Smithsonian