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- Q5223097 subject Q6987802.
- Q5223097 subject Q9228279.
- Q5223097 abstract "The dark-sky movement is a campaign to reduce light pollution. The advantages of reducing light pollution include an increased number of stars visible at night, reducing the effects of unnatural lighting on the environment, and cutting down on energy usage. Earth Hour and National Dark-Sky Week are two examples of such efforts.The movement started with professional and amateur astronomers alarmed that nocturnal skyglow from urban areas was blotting out the sight of stars. For example, the world-famous Palomar Observatory in California is threatened by sky-glow from the nearby city of Escondido and local businesses. For similar reasons, astronomers in Arizona helped push the governor there to veto a bill in 2012 which would have lifted a ban on illuminated billboards.Nocturnal animals can be harmed by light pollution because they are biologically evolved to be dependent on an environment with a certain amount of hours of uninterrupted daytime and nighttime. The over-illumination of the night sky is affecting these organisms (especially birds). This biological study of darkness is called scotobiology. Light pollution has also been found to affect human circadian rhythms.The dark-sky movement encourages 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. A 2011 project is to establish "dark sky oasis" in suburban areas.".
- Q5223097 wikiPageExternalLink 587221.
- Q5223097 wikiPageExternalLink 94259.
- Q5223097 wikiPageExternalLink www.anpcen.fr.
- Q5223097 wikiPageExternalLink astronomy_jasper_national_park.asp.
- Q5223097 wikiPageExternalLink www.darksky.org.
- Q5223097 wikiPageExternalLink DSP%20world%20list_feb2012.pdf.
- Q5223097 wikiPageExternalLink dark-sky-laws.
- Q5223097 wikiPageExternalLink www.mydarksky.com.
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- Q5223097 wikiPageWikiLink Q5030064.
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- Q5223097 wikiPageWikiLink Q6987802.
- Q5223097 wikiPageWikiLink Q7113362.
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- Q5223097 wikiPageWikiLink Q7602059.
- Q5223097 wikiPageWikiLink Q826992.
- Q5223097 wikiPageWikiLink Q9228279.
- Q5223097 comment "The dark-sky movement is a campaign to reduce light pollution. The advantages of reducing light pollution include an increased number of stars visible at night, reducing the effects of unnatural lighting on the environment, and cutting down on energy usage. Earth Hour and National Dark-Sky Week are two examples of such efforts.The movement started with professional and amateur astronomers alarmed that nocturnal skyglow from urban areas was blotting out the sight of stars.".
- Q5223097 label "Dark-sky movement".