... of up to two-and-a-half hours through the dense atmosphere of Saturn'smoon Titan ... Agency's Huygens probe descends to the surface of Saturn'smoon Titan (in foreground ...
... 61 identified moons in the solar system, only three other satellites are known to have atmospheres: Jupiter's volcanically active moon Io (sulfur dioxide), Saturn's largest moon Titan (nitrogen/methane) and Neptune's largest moon Triton (nitrogen/methane ...
Mimas . ... The surface is icy and heavily cratered. ... Because Mimas has such a low temperature of about -200њ C (-328њF), the impact features may date back to the time of the moon's creation. One of the craters, named Herschel, is surprisingly large...
Hyperion . Saturn IV . Hyperion [hi-PEER-ee-en] is one of the smaller moons of Saturn. ... Hyperion might have had a major collision which blew part of the moon away. ... The moon's rotational period is not constant and varies from one orbit to the next...
... Dione's icy surface includes heavily cratered terrain, moderately cratered plains, lightly cratered plains, and whispy material. The heavily cratered terrain has numerous craters greater than 100 kilometers in diameter. ... Much of the heavily...
Iapetus . Saturn VI . Iapetus [eye-AP-i-tus] is one of the stranger moons of Saturn. ... Its leading side is dark with a slight reddish color while its trailing side is bright. ... If the dark material is thin, it must be constantly renewed since a...
... It is postulated that Enceladus is heated by a tidal mechanism similar to Jupiter'smoon Io . ... It is perturbed in its orbit by Saturn's gravitational field and by the large neighboring satellites Tethys and Dione . ...
Rhea . ... Rhea is an icy body with a density of 1.33 gm/cm 3 . The low density indicates that it is composed of a rocky core taking up less than one-third of the moon's mass, with the rest composed of water-ice. ... Rhea is heavily cratered with bright...
Janus . Saturn X - 1980S1 . ... Janus has an irregular shape with a size of 196x192x150 kilometers (122x119x93 miles) in diameter. ... Janus and Epimetheus share the same orbit of 151,472 kilometers (94,125 miles) from Saturn's center or 91,000...