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![]() Date: 2002-04-18 15:08:05Space Bortle Dark-Sky Scale International Dark-Sky Association Skyglow Limiting magnitude Sky brightness Apparent magnitude Naked eye Night sky Observational astronomy Astronomy Light pollution | Add to Reading List |
![]() | 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 thaDocID: 1rkUB - View Document |
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