Date: 2012-09-25 05:27:42Space International Dark-Sky Association Light sources Lighting 243 Ida International Year of Astronomy Natural environment Polarized light pollution Astronomy Light pollution Planetary science | | International Dark-Sky Association The Nightscape Authority since 1988” “to preserve and protect the nighttime environment and our heritage of dark skies through quality outdoor lighting” Press Release: ForAdd to Reading ListSource URL: www.darksky.orgDownload Document from Source Website File Size: 326,39 KBShare Document on Facebook
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