The big moons of Jupiter may have oceans underground. Although they are driven by the same mechanism, their nature can be radically different.
An icy moon of Saturn hangs against the face of its giant parent planet in a breathtaking new image captured by NASA's Cassini spacecraft.
As we rapidly approach Cassini's thrilling final stage of its mission, the list of 'final' events is gradually shrinking. Next on the NASA spacecraft's final list is Dione -- coming within 295 miles of the Saturn moon's surface on Monday.
In new observations beamed back from Cassini, Saturn's icy moon Tethys has decided to show off its mysterious stripes.
On Sunday, May 31, 2015, NASA's Cassini spacecraft successfully made its latest and final flyby of Hyperion, Saturn's spongy moon. And the view was amazing.
As NASA's Cassini spacecraft enters the final phase of its epic mission around Saturn, mission scientists are planning the probe's final flyby of one of the strangest moons in the solar system.
NASA's Cassini mission has spotted a small Saturn moon illuminated by reflected sunlight off Saturn's atmosphere.
Though all of Saturn's moons have some curious quirks, Iapetus is probably the strangest of the Saturnian family of satellites.
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