Gray Egg

It's difficult not to think of an egg when looking at Saturn's moon Methone, seen here during a Cassini flyby of the small moon. The relatively smooth surface adds to the effect created by the oblong shape.

Small moons like Methone are not generally spherical in shape like the larger moons. Their small sizes means that they lack sufficient gravity to pull themselves into a round shape. Scientists think that the elongated shapes of these moons may be a clue to how they formed.

Lit terrain seen here is on the leading side of Methone (2 miles, 3 kilometers across). North on Methone is up. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 20, 2012.

The view was obtained at a distance of approximately 2,500 miles (4,000 kilometers) from Methone and at a Sun-Methone-spacecraft, or phase, angle of 63 degrees. Scale in the original image was 88 feet (27 meters) per pixel. The image has been magnified by a factor of 2.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate in Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov or http://www.nasa.gov/cassini . The Cassini imaging team homepage is at http://ciclops.org .

Credit: NASA/JPL-Caltech/Space Science Institute