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Light pollution is the human-made alteration of outdoor light levels from those ocurring naturally. It has harmful effects on:

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As a valued supporter, you’re part of a growing global community working to protect dark skies worldwide. With many ways to get involved, we invite you to take the next step in preserving the nighttime environment around your home and in your community.
The DarkSky Advocates Network is a global community united in protecting the night from light pollution. Become an Advocate to join monthly meetings, access exclusive tools and resources, and connect with others who share our mission.


Whether you’re evaluating the lighting around your home with our Home Outdoor Lighting Assessment or driving change in your community using our Codes and Statutes templates, we offer resources to help you reduce light pollution at every level.
Our International Dark Sky Places program recognizes parks, reserves, sanctuaries, and communities where the stars shine bright and efforts are underway to protect this view for generations to come. Explore our growing list of places and plan your next dark sky adventure.

The DarkSky Approved Luminaires program recognizes light fixtures that reduce light pollution and are aligned with key elements of our Five Principles for Responsible Outdoor Lighting. Browse our growing database to find the perfect night-friendly lighting for your home or community.

Every year we see lots of new research on the effect of artificial light at night on various types …