The United States at night

Categories: Sci Tech
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Published on: December 9, 2012

 

The United States at night, an image made possible by a new satellite that detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals.Source: AP Photo/NASA

Read more:http://www.foxnews.com/science/slideshow/2012/12/06/stunning-nighttime-views-earth/?intcmp=features#slide=1#ixzz2EZtkYLEc

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