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NASA photos: Cities at night

São Paulo, Brazil as seen from space

Photo: NASA

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São Paulo, Brazil

This image, taken April 12, 2003, shows the sprawling urban footprint of São Paulo, Brazil, South America’s largest city with roughly 17 million people. The different colors (pink, white and gray) define different types and generations of streetlights. The port of Santos, on the right side of the photograph, is also well defined by lights.