Four Days at Saturn
Visible at top is the giant hexagon-shaped jet stream that surrounds the planet's north pole. Each side of this huge shape is slightly wider than Earth.
Cassini will begin a series of dives between the planet and its rings in April 2017, building toward the dramatic end of it mission -- a final plunge into the planet, six months later.
For more information about the Cassini-Huygens mission visit
http://saturn.jpl.nasa.gov and http://www.nasa.gov/cassini.
Image Credit: NASA/JPL-Caltech/Space Science Institute