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Western Europe at night, satellite image. More densely populated areas are brighter. 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, on 5th August 2020. (KEYSTONE/SCIENCE PHOTO LIBRARY/NASA EARTH OBSERVATORY/SCIENCE PHOTO LIBRARY)