Cassini's amazing mission has now ended. But three days before plunging into the planet, it took lots of pictures of Saturn and its rings. Here is Cassini's Last Ring Portrait
. A clever citizen scientist used 36 of the images Cassini took to form this superb farewell portrait.
The Sun is just above the frame, causing Saturn to cast a dark shadow onto its enormous rings. This shadow position cannot be imaged from Earth and will not be visible again until another Earth-launched spaceship visits the ringed giant.
Credit: NASA, JPL-Caltech, Space Science Institute, Mindaugas Macijauskas