Eurasia and Africa 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 manmade light. Data acquired by the daynight band of the Visible Infrared Imaging Radiometer Suite (VIIRS) on board the NASANOAA Suomi National Polarorbiting Partnership (NPP) satellite, during 2016. Cloud and Sun glint added from moderate resolution imaging spectroradiometer (MODIS) data from the Aqua and Terra satellites.Nasa Earth ObservatoryJoshua StevensMiguel RomanGsfcScience Photo Library