Artificial Night Sky Brightness Layer

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Artificial Night Sky Brightness Layer

This Google Earth Layer shows the varying levels of Artificial Night Sky Brightness in North America. It is based on the Bortle Dark Sky Scale.
Image 67 of 74 20090513111457786	Wednesday, May 13 2009 @ 12:14 pm EDT Comments 0 Currently 0.00/5 Rating: 0.0/5 (0 votes cast) Keywords dark sky artificial google	Uploaded By: dgrosvold

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