Last update: December 15th, 2019 at 8:37 am
The image is a composite constructed using the best cloud-free nights in each month of 2016. The data was captured by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the NASA-NOAA Suomi NPP satellite.
The horizontal line of light on the left side is the Pan-American highway that leads into the city of San Luis, Argentina. Also pictured from left to right are the cities of Cordoba, Rio Cuarto, Villa Maria, Santa Fe, and Rosario.
Source: NASA Earth Observatory