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Light pollution: the good, the bad and the just-too-bright

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Anne L. Fischer, Senior Editor, [email protected]

Four hundred years ago, Galileo made his first astronomical observation through a telescope. Today he wouldn’t recognize the skies because light pollution prevents us from seeing the stars clearly from the most populated areas of the world. Most people in North America and Eastern Europe are familiar with an orangey glow in the sky over populated areas. In fact, according to the Tucson, Ariz.-based International Dark-Sky Association (IDA), the orangey sky glow over Los Angeles is visible from an airplane 200 miles away. Images taken by satellite show the extent of light pollution across...Read full article

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