My Pic of the day 6/3/03 another Superb sky shot (56k users, its worth it)

Soldato
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earthlights.jpg
 
Man of Honour
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Man of Honour
Joined
4 Nov 2002
Posts
15,508
Location
West Berkshire
This may answer some of your questions:
This is what the Earth looks like at night. Can you find your favorite country or city? Surprisingly, city lights make this task quite possible. Human-made lights highlight particularly developed or populated areas of the Earth's surface, including the seaboards of Europe, the eastern United States, and Japan. Many large cities are located near rivers or oceans so that they can exchange goods cheaply by boat. Particularly dark areas include the central parts of South America, Africa, Asia, and Australia. The above image is actually a composite of hundreds of pictures made by the orbiting DMSP satellites.
 
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