The NASA/NOAA Suomi NPP satellite's day/night band measures light emanating from the ground showing human settlements and industrial activity, and also moonlight reflected off of clouds. The image on ... more 
The NASA/NOAA Suomi NPP satellite's day/night band measures light emanating from the ground showing human settlements and industrial activity, and also moonlight reflected off of clouds. The image on the left was taken on October 21, 2012, an e less 
1 / 25
SPACE.com | Photo By NASA/NOAA
Fri, Nov 2, 2012 1:36 PM EDT