Earth at night, black marble satellite image. More densely populated areas are brighter. Reflected moonlight, and light from airglow and auroras has been removed to leave only man-made light. Data acquired by the day-night band of the Visible Infrared Imaging Radiometer Suite (VIIRS) on board the NASA-NOAA Suomi National Polar-orbiting Partnership (NPP) satellite, during 2016.
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