(Q5223097)
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Wikipedia(4 entries)
- enwiki Dark-sky movement
- fawiki جنبش آسمان تاریک
- kowiki 별하늘 찾기 운동
- viwiki Phong trào vì bầu trời tối
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 electric lighting on the environment.