A s t r o n o m y / A s t r o l o g y  Q u e s t i o n s  P a g e  3 a
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(s c r o l l  l e f t  t o  r i g h t  a n d  u p  a n d  d o w n)
. This image of Earth's city lights was created with data from the Defense Meteorological Satellite Program
       (DMSP) Operational Linescan System (OLS). Originally designed to view clouds by moonlight, the OLS is
also used to map the locations of permanent lights on the Earth's surface. The brightest areas of
the Earth are the most urbanized, but not necessarily the most populated.
Compare western Europe with China and India.
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