![Light pollution / Light sources / International Dark-Sky Association / Observational astronomy / Lighting / Borrego Springs / California / Skyglow / Borrego / Natural environment / Time / Dark-sky movement / Physics Light pollution / Light sources / International Dark-Sky Association / Observational astronomy / Lighting / Borrego Springs / California / Skyglow / Borrego / Natural environment / Time / Dark-sky movement / Physics](https://www.pdfsearch.io/img/a6663bc87bb77396b5c0bf942b76d8d4.jpg) Date: 2015-03-13 12:22:26Light pollution Light sources International Dark-Sky Association Observational astronomy Lighting Borrego Springs California Skyglow Borrego Natural environment Time Dark-sky movement Physics | | Night Sky Friendly Business Recognition Program Borrego Business Application PROGRAM: Established by the Borrego Springs Dark Sky Coalition, this program recognizes businesses and organizations in the Borrego Valley tha
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