Cities, rivers, and even wildfires can be distinguished in this rich composite of satellite images of our planet, taken by the Suomi National Polar-orbiting Partnership satellite. The project is a collaboration between NASA's Earth Observatory and NOAA's Geophysical Data Center. Browsing their interactive global map feels a little like flying across the country at night -- except 512 miles up, circling the Earth 14 times a day.
As the video below explains, the Suomi is sensitive enough to pick up light from boats on rivers and oceans, wildfires in Australia, and even the flames of oil rigs in the Persian Gulf. Watch the clip full screen to appreciate the level of detail in structures like the border between North and South Korea.
Scientists then mapped the satellite's data -- 2.5 terabytes of it -- over an earlier Blue Marble image, transforming that picture's daytime blues, browns, and greens into a nightime palette of blues, blacks, and gold. The Suomi NPP’s Visible Infrared Imaging Radiometer Suite can detect lights as faint as a lone highway lamp -- meaning pretty much any human outcropping where electricity runs.
For more videos from NASA, visit http://www.nasa.gov/.
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