NASA has this image up on their website and it seems lost without the ability to see its full resolution, and being able to scroll and explore throughout it. So I made a quick version of it that’s a little more user-friendly and fun.
You’re doing yourself a disservice if you don’t go fullscreen (3rd button from right).
The image of the Earth at night is a composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite over nine days in April 2012 and thirteen days in October 2012. It took 312 orbits and 2.5 terabytes of data to get a clear shot of every parcel of Earth’s land surface and islands.
And Now for the science bit:
“The nighttime view of Earth was made possible by the “day-night band” of the Visible Infrared Imaging Radiometer Suite. VIIRS detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as gas flares, auroras, wildfires, city lights, and reflected moonlight. In this case, auroras, fires, and other stray light have been removed to emphasize the city lights.”