This figure illustrates the unexpected and bizarre pattern of daytime temperatures found on Saturn's small inner moon Mimas (396 kilometers, or 246 miles, in diameter).
Appearing like a cyclops gazing off into space, Saturn's moon Mimas and its large Herschel Crater are profiled in this view from NASA's Cassini spacecraft.
NASA's Cassini spacecraft captured a three-dimensional view of the large Herschel Crater on Saturn's moon Mimas during its closest-ever flyby of the moon.
This false-color view of Mimas accentuates terrain-dependent color differences and shows dark streaks running down the sides of some of the craters.
In this view captured by NASA's Cassini spacecraft on its closest-ever flyby of Saturn's moon Mimas, large Herschel Crater dominates Mimas.
Relatively dark regions below bright crater walls and streaks on some of the walls are seen in this mosaic of Saturn's moon Mimas.
NASA's Cassini spacecraft shows a new view of Saturn's moon Enceladus in a whole-disk mosaic of the geologically active moon's leading, or western, hemisphere.
This mosaic, created from images taken by Cassini during its closest flyby of Mimas, looks straight at the moon's huge Herschel Crater and reveals new insights about the moon's surface.
This artist's illustration shows the likely interior structure of Saturn's moon Titan deduced from gravity field data collected by NASA's Cassini spacecraft.
This artistic interpretation of Sikun Labyrinthus on Saturn's moon Titan is based on radar and imaging data from Cassini and the descent imaging and spectral radiometer on the Huygens probe.
This mosaic shows extraordinary details of tectonic deformation in the fractured south polar region of Saturn's moon Enceladus, where jets of water ice spray outward to form Saturn's E ring.
Plumes of water ice spew out from the famed fractures known as "tiger stripes" near the south pole of Saturn's moon Enceladus.
This wide-angle image shows the south polar region of Saturn's moon Enceladus.
Dramatic plumes, both large and small, spray water ice out from many locations along the famed "tiger stripes" near the south pole of Saturn's moon Enceladus.
This mosaic features the highest resolution data yet captured by NASA's Cassini spacecraft of the leading, or western, hemisphere of Saturn's moon Enceladus.
This anaglyph made from images captured by NASA's Cassini spacecraft shows a dramatic, 3-D view of one of the deep fractures nicknamed "tiger stripes" on Saturn's moon Enceladus.
Pockets of heat appear along one of the mysterious fractures in the south polar region of Saturn's moon Enceladus.
The right-hand image shows a dramatically improved view of heat radiation from a warm fissure near the south pole of Saturn's icy moon Enceladus.
Saturn's potato-shaped moon Prometheus is rendered in three dimensions in this close-up from Cassini.
In this synthetic aperture radar image obtained by NASA's Cassini spacecraft, two generally similar features, upper center and lower right, appear to be low mountains with grooves running roughly in the up-down direction.