A new incredible photograph shows Saturn’s potato-shaped moon Janus posing above the planet’s cloudy atmosphere. Janus is only 181 kilometers across, and it shows the scars of many impacts with other objects. Like Saturn’s other smaller moons, Janus could be covered with a layer of fine, dust-sized icy material. The Cassini spacecraft took the photo on September 25, 2006, when it was only 145.000 kilometers from Janus.
https://photojournal.jpl.nasa.gov/catalog/PIA08296