Satellites of Saturn

Satellites of Saturn

. Six of Saturn’s large moons are shown in this one-minute exposure made with the United States Naval Observatory’s 0.66-meter (26-inch) refractor. From left to right, the satellites are Titan, Dione, Enceladus, Tethys, Mimas and Rhea (on the other side). The faint image below the planet is that of a star. A partially transparent metallic film was used to weaken the light from Saturn and its rings. (Courtesy of Dan Pascu.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University