Source: http://phenomena.nationalgeographic.com/...

For the last decade, Cassini has been continually looping through the system, flying high above the planet, swooping low over its satellites, and swiveling to stare at the next enigmatic target. It even dropped the European Space Agency’s Huygens lander onto the surface of Titan, Saturn’s largest moon. The spacecraft has collected hundreds of gigabytes of data and snapped thousands of photos (a few of my favorites are in the gallery above), and beamed all of its observations back to eager scientists on Earth. Some of Cassini’s photos have even included Earth itself – visible as a pale blue smudge tucked into the spaces between the planet’s frigid rings.