On this view, Saturn’s icy moon Rhea passes in entrance of Titan as seen by NASA’s Cassini spacecraft. A few of the variations between the 2 giant moons are readily obvious. Whereas Rhea is a heavily-cratered, airless world, Titan’s nitrogen-rich environment is even thicker than Earth’s.
This pure coloration picture was taken in seen mild with the Cassini narrow-angle digital camera on November 19, 2009, at a distance of roughly 713,300 miles (1,148,000 kilometers) from Rhea.
The Cassini spacecraft ended its mission on September 15, 2017.
Picture Credit score: NASA/JPL-Caltech/Area Science Institute
Rationalization from: https://photojournal.jpl.nasa.gov/catalog/PIA21904