The Cassini spacecraft looks down onto middle northern latitudes on Rhea. The large Tirawa basin is seen on the terminator at right.
Lit terrain seen here is primarily on the trailing side of Rhea (1,528 kilometers, or 949 miles across). North is up.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 17, 2007. The view was obtained at a distance of approximately 539,000 kilometers (335,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 79 degrees. Image scale is 3 kilometers (2 miles) per pixel.
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, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.
Credit: NASA/JPL/Space Science Institute