The Dark Sky movement is a campaign by people who want to reduce light pollution so people can see the stars in the night sky, to reduce the effects of unnatural lighting on the environment, and to cut down on energy usage. The movement started with professional and amateur astronomers alarmed that nocturnal glow from urban areas was blotting out the sight of stars
The dark-sky movement’s main activity is to encourage the use of full cutoff fixtures that cast little or no light upward, in public areas and generally to encourage communities to adopt lighting regulations. Above is a useful guide for choosing fixtures that reduce light pollution.
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