(Martian Moon) "Phobos" Has Really Low Density," Said James Head (Professor Of Geological Sciences At Brown University) - "Is That Low Density Due To Ice In It's Interior Or Is It Due To Phobos Being Completely Fragmented, Like A Loose Rubble Pile? We Don't Know."
Crescent Dione from Cassini, October 11, 2005 ~ Thin crescent of cratered terrain is illuminated on Saturn's fourth largest moon, Dione. As it departed its encounter with Saturn's moon Dione, Cassini sailed above an unreal landscape blasted by impacts. The rising Sun throws craters into sharp contrast and reveals steep crater walls.The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency