Cassini is officially, irrevocably in its final year of existence. The NASA spacecraft has been capturing lovely images and collecting samples of Saturn and its orbiting objects since 2004, but today Cassini enters the final phase of its mission. Between November 30th and April 22nd, Cassini will circle Saturn's poles, diving between its outermost rings once every seven days, a total of 20 times (as shown above).
Its final mission is also a first -- Cassini will observe unexplored areas of Saturn's rings, including the collection of small moons orbiting near their outer edges.