Cassini probe captures Saturn's spectacular aurora. Generally, images of the aurora (equivalent to Earth's‘northern lights’) provide valuable information about the electromagnetic connection between the solar wind, the planet’s magnetic field (magnetosphere) and its upper atmosphere. The Daily Galaxy via Cassini/NASA.
The Earth At Night - photos by NASA. See the video here http://www.youtube.com/watch?feature=player_embedded=Q3YYwIsMHzw#!. Check out that cool T-Shirt here: https://www.sunfrog.com/Earth-day-T-Shirt-hoodie-Black-Guys.html?53507