Global citizen science project finds alarming rate of light

In growing areas of the planet, sundown no longer brings night and stars, but rather an artificial dusk caused by human light sources.To track light pollution’s global spread, the authors of a new paper in the journal Science looked beyond space technology and asked citizen scientists to provide some ground truth.

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Colorado , United States , New York , Boulder , Chile , Spain , America , Van Gogh , Drake Presto Cronkite , Connie Walker , National Optical Astronomy Observatory , Astronomy Research Laboratory In Tucson , National Optical , Oracle State Park , North America , Optical Infrared Astronomy Research Laboratory , New York City , Starry Night ,