This new global view and animation of Earth’s city lights is a composite assembled from data acquired by the Suomi NPP satellite. The data was acquired over nine days in April 2012 and 13 days in October 2012. It took 312 orbits to get a clear shot of every parcel of Earth's land surface and islands. This new data was then mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet.
This animation comprises 2.5 terabytes of data—2500 gigabytes!—that were stitched together to show the entire Earth’s face over a single rotation.
Enjoy the video in HD and full screen mode. See if things jump out. I was surprised how well lit the middle of Australia looked, and how dense the spread is across India.