月度归档： 2017 年 4 月

NASA scientists have just released the first new global map of Earth at night since 2012. By studying Earth at night, researchers can investigate how cities expand, monitor light intensity to estimate energy use and economic activity, and aid in disaster response.

 

from https://www.nasa.gov/feature/goddard/2017/new-night-lights-maps-open-up-possible-real-time-applications