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Published: October 1, 2013

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This artist's conception shows a nearly invisible ring around Saturn -- the largest of the giant planet's many rings. It was discovered by NASA's Spitzer Space Telescope. Full caption Credit: NAS...
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This artist's conception shows a nearly invisible ring around Saturn -- the largest of the giant planet's many rings.
Saturn's Infrared Ring
This Solar & Heliospheric Observatory (SOHO) image, taken Oct. 24, 2012, at 11:06 a.m. UTC, shows a view of Saturn as it passes behind the sun, Cassini spacecraft in tow. Credit: SOHO - http:...
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This Solar & Heliospheric Observatory (SOHO) image, taken Oct. 24, 2012, at 11:06, UTC shows a view of Saturn as it passes behind the sun, Cassini spacecraft in tow.
Saturn Superior Conjunction
This view from NASA's Dawn spacecraft features a crater named Oxo, which is about 6 miles (9 kilometers) in diameter. A short, linear slump, where a mass of material has dropped below the surface, ...
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Dawn HAMO Image 73
Dawn HAMO Image 73
The line of Saturn's rings disrupts the Cassini spacecraft's view of the moons Tethys and Titan. Larger Titan (3,200 miles, or 5,150 kilometers across) is on the left. Tethys (660 miles, or 1,062 ...
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Saturn's rings, Tethys and Titan
Welcome Disruption
The shadow of the moon Janus crosses the Encke Gap as it strikes the plane of Saturn's rings in this image taken as the planet approached its August 2009 equinox. Janus (179 kilometers, or 111 mil...
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Saturn's rings
Shadow Crosses a Gap
Galileo Galilei's observations that Venus appeared in phases -- similar to those of Earth's Moon -- in our sky was evidence that Venus orbited the sun and contributed to the downfall of the centuri...
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Galileo Galilei's observations that Venus appeared in phases -- similar to those of Earth's Moon -- in our sky was evidence that Venus orbited the sun and contributed to the downfall of the centuries-old belief that the sun and planets revolved around Earth.
Galileo's Phases of Venus and Other Planets
The Cassini spacecraft takes a look at Saturn's diffuse E ring which is formed from icy material spewing out of the south pole of the moon Enceladus. See Casting a Shadow to learn more about how E...
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Saturn's E ring
Eyeing the E Ring
A close-up of Saturn's A ring reveals dozens of small, bright streaks aligned with the orbital direction of the rings. These objects are the propeller-shaped features first captured in Cassini imag...
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Saturn's rings
Propeller Swarm
Immense Saturn is visible through the A ring as Pan coasts along its private corridor. This view looks toward the unilluminated side of the rings from about 24 degrees above the ringplane. Pan (26...
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Saturn is visible through the A ring as Pan coasts along its private corridor
A-Ring Odyssey
This animated sequence of Cassini images shows methane clouds moving above the large methane sea on Saturn's moon Titan known as Ligeia Mare.
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Clouds on Titan
Clouds Over Ligeia Mare on Titan
The Cassini spacecraft has a peek beneath the hazes in Saturn's upper atmosphere at the swirling vortices that lurk below. Many vortices can be seen in this image, varying in size from small to la...
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Saturn's upper atmosphere
The Storms Within
This image, taken by NASA's Dawn spacecraft, shows dwarf planet Ceres from an altitude of 2,700 miles (4,400 kilometers). The image, with a resolution of 1,400 feet (410 meters) per pixel, was take...
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Dawn Survey Orbit Image 15
Dawn Survey Orbit Image 15
The upper series of images represents the best yet of the four small inner satellites of Jupiter taken by the camera on NASA's Galileo spacecraft.
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The upper series of images represents the best yet of the four small inner satellites of Jupiter taken by the camera on NASA's Galileo spacecraft.
Shapes of the Small Inner Satellites of Jupiter
+ Unannotated version The northern and southern hemispheres of Rhea are seen in these polar stereographic maps, mosaicked from the best-available Cassini and Voyager images. Six Voyager images fi...
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The northern and southern hemispheres of Rhea are seen in these polar stereographic maps, mosaicked from the best-available Cassini and Voyager images.
Rhea Polar Maps - North - March 2012
Copernicus is 93 km wide and is located within the Mare Imbrium Basin, northern nearside of the Moon (10 degrees N. 20 degrees W.). 
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Copernicus is 93 km wide and is located within the Mare Imbrium Basin, northern nearside of the Moon (10 degrees N. 20 degrees W.).
Young Moon Rocks
During the Viking Mission, the Viking Lander Camera System acquired many high-resolution images of the scene at Chryse Planitia.
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During the Viking Mission, the Viking Lander Camera System acquired many high-resolution images of the scene at Chryse Planitia.
Morning on Chryse Planitia
What appear to be spiders scampering across the martian landscape are actually cracks in the surface of the southern polar region on Mars, seen by the Mars Reconnaissance Orbiter on August 23, 2009.
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What appear to be spiders scampering across the martian landscape are actually cracks in the surface of the southern polar region on Mars, seen by the Mars Reconnaissance Orbiter on August 23, 2009.
South Pole Spiders
Saturn's rings occupy the space between two of the planet's moons in this image which shows the highly reflective moon Enceladus in the background and the smaller moon Janus in the fore. Janus (17...
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Saturn's rings occupy the space between two of the planet's moons in this image which shows the highly reflective moon Enceladus in the background and the smaller moon Janus in the fore.
The Space Between
+ Annotated Version This global map of Saturn's moon Mimas was created using images taken during Cassini spacecraft flybys, with Voyager images filling in the gaps in Cassini's coverage. The moon...
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This global map of Saturn's moon Mimas was created using images taken during Cassini spacecraft flybys, with Voyager images filling in the gaps in Cassini's coverage.
Map of Mimas - June 2012 -- Unannotated
A crescent Enceladus, imaged from the night side, shows off its spectacular water ice plumes emanating from the south polar region of this moon of Saturn. This image was captured at a phase, or Su...
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A crescent Enceladus and its spectacular water ice plumes
Plumes and a Crescent
NASA's Dawn spacecraft took this image on June 13, 2016, showing the limb of Ceres from above an equatorial region east of Kirnis Crater.
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Dawn LAMO Image 124
Dawn LAMO Image 124
The Cassini spacecraft takes an angled view toward Saturn, showing the southern reaches of the planet with the rings on a dramatic diagonal. North on Saturn is up and rotated 16 degrees to the lef...
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Saturn and its rings on a dramatic diagonal
Angling Saturn
During its closest ever dive past the active south polar region of Saturn's moon Enceladus, NASA's Cassini spacecraft quickly shuttered its imaging cameras to capture glimpses of the fast moving te...
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Enceladus
Enceladus Up-Close
NASA's Dawn spacecraft spied Achita Crater on Ceres in this view captured on June 3, 2016, at a distance of about 240 miles (385 kilometers) above the surface. Achita is named for a Nigerian god of...
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Dawn LAMO Image 185
Dawn LAMO Image 185
Bright, high altitude clouds, like those imaged here, often appear more filamentary or streak-like than clouds imaged at slightly deeper levels in Saturn's atmosphere. This view also shows one of t...
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High altitude clouds in Saturn's atmosphere
Cat-Eyed Saturn

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