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night image Earth [750x531]
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night image Earth [875x620]
Photo: night image Earth
Keywords: night image Earth, ,Image information
PD 6 - This image was created by NASA.
Data courtesy Marc Imhoff of NASA GSFC and Christopher Elvidge of NOAA NGDC.
Image by Craig Mayhew and Robert Simmon, NASA GSFC.
The brightest areas of the Earth are the most urbanized, but not necessarily the most populated.
(Compare western Europe with China and India.)