Ultraviolet image of Saturn's North Pole
Cassini used its Ultraviolet Imaging Spectrograph to capture this final view of ultraviolet auroral emissions in Saturn's north polar region on Sept. 14, 2017. Image credit: NASA/JPL/Univ. Colorado/Univ. Liege-LPAP
  • • Cassini found evidence that hydrogen gas, which could potentially provide a chemical energy source for life, is pouring into the subsurface ocean of Enceladus from hydrothermal... more

  • • Ring scientists were puzzled that the narrow gap between Saturn and its rings appeared to be relatively dust-free. This assessment was based on data Cassini collected... more

  • • Several Grand Finale passages allowed for imaging "noodles" of Saturn at high resolution from pole to pole.

    • Cassini successfully imaged all six of the small... more

  • • The region of space between Saturn and its rings that is shaded by the rings themselves has less ionized gas, or plasma, than regions in sunlight.

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  • • Cassini's Ring Grazing Orbits (Nov. 2016 - April 2017) allowed for the closest-ever imaging observations of the ring moons Atlas, Daphnis and Pan.

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  • • Cassini's highest resolution ring images reveal the rings to have varied structure down to the smallest scales observable by the spacecraft's cameras.

    • Although Cassini saw these features with names like "straw" and "propellers" earlier in the mission, the spacecraft's final, ultra-close orbits provided opportunities to see them in greater detail. Some images resolved details as small as 0.3 miles (550 meters), which is on the scale of Earth's tallest buildings. The features are caused by clumping ring particles and small, embedded moonlets.

    • Images of features in Saturn's C ring called "plateaus" have deepened the mystery surrounding them. These bright bands have a streaky texture that is very different from the textures of the regions around them.

    • See Textures in the C Ring and More Textures in the C Ring from July 24 and Close Views Show Saturn's Rings in Unprecedented Detail" from Jan. 29. more

  • • A modeling study showed that heat from friction could power hydrothermal activity on Enceladus for billions of years if the moon has a highly porous core.

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  • • Titan's atmosphere has been known to contain exotic molecules produced by both sun-driven and energetic particle-driven chemistry. Recent discoveries have revealed that Titan's chemical makeup is... more

  • • Saturn's Great Storm of 2010-2011 generated disturbances that were felt many thousands of kilometers away.

    • Storms like this one have been observed to erupt on... more

  • • Cassini scientists found evidence that the moon's spin axis -- the line through the north and south poles -- has reoriented, possibly due to a collision... more

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