Since childhood, I found it very appealing to view the nighttime illumination of cities from sky or even space. Therefore, I was inspired by John Nelson to map the illumination change which may help us understand what happened on the ground such as urbanization or wars. Currently I only got a very basic lights on and out map, but I hope to continue working on the project to identify nighttime illumination change trend over years and link the change to human activities and natural disasters.
