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earth lights at night
Earth Lights at Night
Credit: C. Mayhew & R. Simmon (NASA/GSFC), NOAA/ NGDC, DMSP Digital Archive
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 orbiting satellites.
A larger, high-resolution digital version of the image is also available, and worth viewing.
On this larger photo, it is easy to scroll east-west and north-south to examine specific regions. For example:
What else can you see?
For more information, go to -- http://antwrp.gsfc.nasa.gov/apod/ap001127.html
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