Galerie de photos des anneaux de la planète Saturne

<h1>PIA00534: Wide-Angle Image of Saturn's Rings</h1><div class="PIA00534" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This wide-angle image of Saturn's rings was taken Aug. 26 just before Voyager 2's crossing of the plane of these complex structures. The spacecraft was 103,000 kilometers (64,000 miles) from the rings when it acquired this image. This extremely oblique view of the bright side of the rings highly magnifies features near the bottom of the picture and compresses features across to the other side of the west ansa (the western edge of the loop in the rings). Starting from the bottom, one can see the F-ring, the A-ring with the Encke Gap, the Cassini Division (the narrow dark band at center), the B-ring and the C-ring. The high-contrast bright and dark areas of the C-ring are seen at right; then, continuing upward, come the B- and A-rings straddling the Cassini Division and a very foreshortened view of the A-ring. The bright streaks in the B-ring are the spokes in forward-scattered light. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA00534" onclick="window.open(this.href); return false;" title="Voir l'image PIA00534: Wide-Angle Image of Saturn's Rings sur le site de la NASA">Voir l'image PIA00534: Wide-Angle Image of Saturn's Rings sur le site de la NASA.</a></div>
PIA00534: Wide-Angle Image of Saturn's Rings
<h1>PIA01271: Moons Around Saturn</h1><div class="PIA01271" lang="en" style="width:630px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This series of 10 Hubble Space Telescope images captures several small moons orbiting Saturn. Hubble snapped the five pairs of images while the Earth was just above the ring plane and the Sun below it. The telescope captured a pair of images every 97 minutes as it circled the Earth. Moving out from Saturn, the visible rings are: the broad C Ring, the Cassini Division, and the narrow F Ring.<p>The first pair of images shows the large, bright moon Dione, near the middle of the frames. Two smaller moons, Pandora (the brighter one closer to Saturn) and Prometheus, appear as if they're touching the F Ring. In the second frame, Mimas emerges from Saturn's shadow and appears to be chasing Prometheus.<p>In the second image pair, Mimas has moved towards the tip of the F Ring. Rhea, another bright moon, has just emerged from behind Saturn. Prometheus, the closest moon to Saturn, has rounded the F Ring's tip and is approaching the planet. The slightly larger moon Epimetheus has appeared.<p>The third image pair shows Epimetheus, as a tiny dot just beyond the tip of the F Ring. Prometheus is in the lower right corner. An elongated clump or arc of debris in the F ring is seen as a slight brightening on the far side of this thin ring.<p>In the fourth image pair, Epimetheus, in the lower right corner, streaks towards Saturn. The long ring arc can be seen in both frames.<p>The fifth image pair again captures Mimas, beyond the tip of the F Ring. The same ring arc is still visible.<p>In addition to the satellites, a pair of stars can be seen passing behind the rings, appearing to move towards the lower left due to Saturn's motion across the sky.<p>The images were taken Nov. 21, 1995 with Wide Field Planetary Camera-2.<p>The Wide Field/Planetary Camera 2 was developed by the Jet Propulsion Laboratory and managed by the Goddard Space Flight Center for NASA's Office of Space Science.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01271" onclick="window.open(this.href); return false;" title="Voir l'image PIA01271: Moons Around Saturn sur le site de la NASA">Voir l'image PIA01271: Moons Around Saturn sur le site de la NASA.</a></div>
PIA01271: Moons Around Saturn
<h1>PIA01274: Hubble Discovery Image of New Moon Orbiting Saturn</h1><div class="PIA01274" lang="en" style="width:550px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This four-picture sequence (spanning 30 minutes) shows one of four new moons discovered by the Hubble Space Telescope, in images taken of Saturn on May 22, 1995, when Saturn's rings were tilted edge-on to Earth.<p>Identified as S/1995 S3, the moon appears as an elongated white spot near the center of each image. The new moon lies just outside Saturn's outermost "F" ring and is no bigger than about 15 miles across. The brighter object to the left is the moon Epimetheus, which was discovered during the ring-plane crossing of 1966. Both moons change position from frame to frame because they are orbiting the planet.<p>Saturn appears as a bright white disk at far right, and the edge-on rings extend diagonally to the upper left. To the left of the vertical line, each image has been processed to remove residual light from the rings and accentuate any faint satellites orbiting near the rings. The long observing times necessary to detect the faint satellites have resulted in Saturn's bright, overexposed appearance.<p>Saturn ring plane crossings happen only once every 15 years, and historically have given astronomers an opportunity to discover new satellites that are normally lost in the glare of the planet's bright ring system.<p>The Wide Field/Planetary Camera 2 was developed by the Jet Propulsion Laboratory and managed by the Goddard Space Flight Center for NASA's Office of Space Science.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01274" onclick="window.open(this.href); return false;" title="Voir l'image PIA01274: Hubble Discovery Image of New Moon Orbiting Saturn sur le site de la NASA">Voir l'image PIA01274: Hubble Discovery Image of New Moon Orbiting Saturn sur le site de la NASA.</a></div>
PIA01274: Hubble Discovery Image of New Moon Orbiting Saturn
<h1>PIA01374: Saturn's ring system</h1><div class="PIA01374" lang="en" style="width:500px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Both the limb of Saturn and the shadow of its ring system are seen through the transparent C-ring in this striking picture taken by NASA's Voyager 1 on Nov. 9, 1980 at a distance of 4.5 million kilometers (3 million miles). Gaps and regions of high transparency are seen throughout the C-ring, especially in the area closest to the opaque B-ring. Shadows of the A-, B-, and C-rings are clearly visible on the disk of Saturn. The C-ring shadow showing the gaps described above is the uppermost shadow; below this is the very black shadow of the opaque B-ring, then the Cassini Division, and at the bottom, the shadow of the A-ring.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01374" onclick="window.open(this.href); return false;" title="Voir l'image PIA01374: Saturn's ring system sur le site de la NASA">Voir l'image PIA01374: Saturn's ring system sur le site de la NASA.</a></div>
PIA01374: Saturn's ring system
<h1>PIA01380: A view of Saturn's B-ring</h1><div class="PIA01380" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This Voyager 2 photograph of the lit face of Saturn's B-ring was obtained Aug. 25 from a distance of 743,000 kilometers (461,000 miles). It covers a range of about 6,000 km. (3,700 mi.) and shows the ring structure broken up into about 10 times more ringlets than previously suspected. The narrowest features here are about 15 km. (10 mi.) wide. Variations in brightness are due to a combination of differences in ring particle number density and light scattering properties. The B-ring is the most opaque of Saturn's rings; the highest-resolution Voyager 1 observations were of its unlit face, where little detail is visible. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01380" onclick="window.open(this.href); return false;" title="Voir l'image PIA01380: A view of Saturn's B-ring sur le site de la NASA">Voir l'image PIA01380: A view of Saturn's B-ring sur le site de la NASA.</a></div>
PIA01380: A view of Saturn's B-ring
<h1>PIA01381: Thin ringlet of Saturn's A-ring</h1><div class="PIA01381" lang="en" style="width:541px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 discovered a new "kinky" ringlet inside the Encke Gap in Saturn's A-ring. These pictures show the thin ringlet at two different positions, photographed Aug. 25 from a distance of about 700,000 kilometers (435,000 miles) near the time the spacecraft crossed the planet's ring plane. Resolution is about 15 km. (9 mi.) in both frames. Here, the ringlet appears in two different positions: about midway in the gap in the right-hand image and near the inner edge of the gap at left. Scientists do not know if the kinky ring is eccentric, or off-center, or if perhaps there are several inner rings, with different components visible at different longitudes. The kinks, clearly visible on the right, appear to be more closely spaced than those seen in Saturn's outer F-ring. (The fine white dots or "snow" in these pictures are artifacts of processing and are not individual moonlets). The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01381" onclick="window.open(this.href); return false;" title="Voir l'image PIA01381: Thin ringlet of Saturn's A-ring sur le site de la NASA">Voir l'image PIA01381: Thin ringlet of Saturn's A-ring sur le site de la NASA.</a></div>
PIA01381: Thin ringlet of Saturn's A-ring
<h1>PIA01382: A view of Saturn's F-ring</h1><div class="PIA01382" lang="en" style="width:555px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 obtained this picture of Saturn's F-ring on Aug. 26 just before the spacecraft crossed the planet's ring plane. This edge-on view, taken from a range of 103,000 kilometers (64,000 miles), shows nearly 25` of the F-ring, with at least four distinct components visible. Voyager's photopolarimeter conducted a higher-resolution scan through another part of the ring, showing it to be composed of even more distinct ringlets than this frame would indicate. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01382" onclick="window.open(this.href); return false;" title="Voir l'image PIA01382: A view of Saturn's F-ring sur le site de la NASA">Voir l'image PIA01382: A view of Saturn's F-ring sur le site de la NASA.</a></div>
PIA01382: A view of Saturn's F-ring
<h1>PIA01387: Image of Saturn's F-ring</h1><div class="PIA01387" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 took this high-resolution image of Saturn's F-ring Aug. 26 from a distance of 51,500 kilometers (32,000 miles). This closeup view shows that the ring is made up of at least four distinct components. A higher-resolution scan through the F-ring, the result of the star occultation experiment conducted by the spacecraft's photopolarimeter, showed even finer structure in the ring. Voyager 1 showed a braiding effect not evident in this picture. The small black dots are reseau (reference) marks on the camera. The small bright dash in the middle right of the image is a star trail. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01387" onclick="window.open(this.href); return false;" title="Voir l'image PIA01387: Image of Saturn's F-ring sur le site de la NASA">Voir l'image PIA01387: Image of Saturn's F-ring sur le site de la NASA.</a></div>
PIA01387: Image of Saturn's F-ring
<h1>PIA01388: Saturn's faint inner D-ring</h1><div class="PIA01388" lang="en" style="width:460px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 took this picture of Saturn's faint inner D-ring Aug. 25 about 1 hour 48 minutes before the spacecraft's closest approach to Saturn. The range was 195,400 kilometers (121,300 miles) and phase angle was 166`. This view includes the sun's shadow across the ring. Voyager 1 saw this region in a similar view last fall, but this higher-resolution image shows many more ringlets and gaps. The D-ring is very tenuous and has an extremely small optical depth. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01388" onclick="window.open(this.href); return false;" title="Voir l'image PIA01388: Saturn's faint inner D-ring sur le site de la NASA">Voir l'image PIA01388: Saturn's faint inner D-ring sur le site de la NASA.</a></div>
PIA01388: Saturn's faint inner D-ring
<h1>PIA01390: Outer edge of Saturn's B-ring</h1><div class="PIA01390" lang="en" style="width:700px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This composite image shows two views of the outer edge of Saturn's B-ring (left) and the inner part of the Cassini Division (right) in the rings. The images were taken on opposite sides of the planet Aug. 25 from a range of 610,000 kilometers (380,000 miles). The dramatic result of this comparison is that the thin eccentric ringlet in the inner gap of the Cassini Division is shown not to match from side to side; moreover, the edge of the B-ring differs by about 50 km. (30 mi.) as well. Scientists believe the distorted shape of the B-ring edge is due to the gravitational influence of the Saturnian satellite Mimas. It is noted, too, that much of the fine B-ring structure also mismatches from side to side, possibly indicating that they are wave phenomena. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01390" onclick="window.open(this.href); return false;" title="Voir l'image PIA01390: Outer edge of Saturn's B-ring sur le site de la NASA">Voir l'image PIA01390: Outer edge of Saturn's B-ring sur le site de la NASA.</a></div>
PIA01390: Outer edge of Saturn's B-ring
<h1>PIA01486: Composition Differences within Saturn's Rings</h1><div class="PIA01486" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Possible variations in chemical composition from one part of Saturn's ring system to another are visible in this Voyager 2 picture as subtle color variations that can be recorded with special computer-processing techniques. This highly enhanced color view was assembled from clear, orange and ultraviolet frames obtained Aug. 17 from a distance of 8.9 million kilometers (5.5 million miles). In addition to the previously known blue color of the C-ring and the Cassini Division, the picture shows additional color differences between the inner B-ring and outer region (where the spokes form) and between these and the A-ring. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01486" onclick="window.open(this.href); return false;" title="Voir l'image PIA01486: Composition Differences within Saturn's Rings sur le site de la NASA">Voir l'image PIA01486: Composition Differences within Saturn's Rings sur le site de la NASA.</a></div>
PIA01486: Composition Differences within Saturn's Rings
<h1>PIA01531: Saturn's B and C-rings</h1><div class="PIA01531" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This view focusing on Saturn's C-ring (and to a lesser extent, the B-ring at top and left) was compiled from three separate images taken through ultraviolet, clear and green filters. On Aug. 23, when it acquired these frames, Voyager 2 was 2.7 million kilometers (1.7 million miles) from the planet. More than 60 bright and dark ringlets are evident here; the small, bland squares are caused by the removal of reseau (reference) marks during processing. In general, C-ring material is very bland and gray, the color of dirty ice. Color differences between this ring and the B-ring indicate differing surface compositions for the material composing these complex structures.<p>JPL manages the Voyager project for NASA's Office of Space Science.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01531" onclick="window.open(this.href); return false;" title="Voir l'image PIA01531: Saturn's B and C-rings sur le site de la NASA">Voir l'image PIA01531: Saturn's B and C-rings sur le site de la NASA.</a></div>
PIA01531: Saturn's B and C-rings
<h1>PIA01940: Saturn's Rings in Infrared</h1><div class="PIA01940" lang="en" style="width:718px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This mosaic of Saturn's rings was acquired by Cassini's visual and infrared mapping spectrometer instrument on Sept. 15, 2006, while the spacecraft was in the shadow of the planet looking back towards the rings from a distance of 2.16 million kilometers (1.34 million miles). </p><p>Data at wavelengths of 1.0 micron, 1.75 micron and 3.6 microns were combined in the blue, green and red channels to make the pseudo-color image shown here.</p><p>The brightest feature in the mosaic is the F ring, located at the outer edge of the main rings. The F ring is overexposed and appears white in this image. Of the main A, B and C rings; the C ring is the most prominent and reddish in color, becoming saturated close to the sun. The more opaque A and B rings are muddy in color and very dark in this geometry.</p><p>By contrast, the normally faint D ring, located just interior to the C ring, is quite bright and blue, indicating the presence of very small ring particles. Similarly, a narrow, green ringlet in the Cassini Division, as well as the greenish G ring and blue E ring -- located at increasing distances outside the F ring -- are predominantly composed of small particles. The faint reddish band immediately outside the F ring is likely to be an artifact caused by the extremely bright F ring.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The visual and infrared mapping spectrometer team is based at the University of Arizona where this image was produced.</p><p>For more information about the Cassini-Huygens mission <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a> The visual and infrared mapping spectrometer team homepage is at <a href="http://wwwvims.lpl.arizona.edu">http://wwwvims.lpl.arizona.edu</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01940" onclick="window.open(this.href); return false;" title="Voir l'image PIA01940: Saturn's Rings in Infrared sur le site de la NASA">Voir l'image PIA01940: Saturn's Rings in Infrared sur le site de la NASA.</a></div>
PIA01940: Saturn's Rings in Infrared
<h1>PIA01951: Saturn's F-ring and inner satellite</h1><div class="PIA01951" lang="en" style="width:520px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Saturn's F-ring and its inner shepherding satellite (1980S27) are pictured in this closeup Voyager 2 image acquired Aug. 25 from a range of 365,000 kilometers (227,000 miles). Features as small as 6 km. (3.7 mi.) across are visible. The satellite is elongated and irregular, with its longest axis pointing toward the center of Saturn (toward the upper right in this view). As seen here, the F-ring is thin and does not show the multiple, braided structure Voyager 1 saw last fall. Nor is there any indication of a band or kink in the ring at its closest point to the shepherd; such a feature would be consistent with some of the theories advanced on the formation of the braids. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01951" onclick="window.open(this.href); return false;" title="Voir l'image PIA01951: Saturn's F-ring and inner satellite sur le site de la NASA">Voir l'image PIA01951: Saturn's F-ring and inner satellite sur le site de la NASA.</a></div>
PIA01951: Saturn's F-ring and inner satellite
<h1>PIA01952: Saturn's A-ring</h1><div class="PIA01952" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 cameras acquired this photograph of Saturn's A-ring Aug. 26 from a distance of 227,800 kilometers (141,500 miles). This view of the ring's outer edge shows a small bright, clumpy ring within the Encke Gap (center of this image) that exhibits kinks reminiscent of those observed in the F-ring by Voyager 1 last fall but not by Voyager 2. Voyager 1 saw two similar clumpy rings in this region at much lower resolution. Also visible are a bright ringlet at the very outer edge of the A-ring and several bright wave patterns in the Encke region. The small bright patch on the inner edge of the Encke Gap near the ring is an artifact of processing. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01952" onclick="window.open(this.href); return false;" title="Voir l'image PIA01952: Saturn's A-ring sur le site de la NASA">Voir l'image PIA01952: Saturn's A-ring sur le site de la NASA.</a></div>
PIA01952: Saturn's A-ring
<h1>PIA01953: Outer edge of Saturn's A-ring</h1><div class="PIA01953" lang="en" style="width:765px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">The outer edge of Saturn's A-ring is detailed in this image obtained by Voyager 2 on Aug. 26, just half an hour before closest approach, at a range of about 51,000 kilometers (31,700 miles). Resolution in this wide-angle view is about 4 km. (2.5 miles). The many sharp linear features parallel to the ring edge are most probably locations where ring particles are in resonance with one of the several small nearby satellites of about 100-km. radius discovered last fall by Voyager 1. Such regions are likely characterized by more intense particle collisions and a greater density of small "chips." The entire outer band of the A-ring has different scattering properties and therefore different particle characteristics than the main body of the rings to the upper left. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01953" onclick="window.open(this.href); return false;" title="Voir l'image PIA01953: Outer edge of Saturn's A-ring sur le site de la NASA">Voir l'image PIA01953: Outer edge of Saturn's A-ring sur le site de la NASA.</a></div>
PIA01953: Outer edge of Saturn's A-ring
<h1>PIA01955: Spokes on side of Saturn's rings</h1><div class="PIA01955" lang="en" style="width:560px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Spokes are seen on the unlit side of Saturn's rings for the first time in this Voyager 2 wide-angle view obtained Aug. 28 from a distance of 3.4 million kilometers (2.1 million miles). In order to bring out the very faint detail in the B-ring, the image was specially processed for the spokes and thus does not show the true relative brightness of the other rings. The spokes are visible as bright wedge-shaped and tilted features in the outer half of the B-ring (center of image). A time-lapse sequence to be taken later this week will help resolve the question about whether the spokes are forming on the darkside of the rings or are lit-side features seen through the rings. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01955" onclick="window.open(this.href); return false;" title="Voir l'image PIA01955: Spokes on side of Saturn's rings sur le site de la NASA">Voir l'image PIA01955: Spokes on side of Saturn's rings sur le site de la NASA.</a></div>
PIA01955: Spokes on side of Saturn's rings
<h1>PIA01962: High-resolution view of Saturn's rings</h1><div class="PIA01962" lang="en" style="width:750px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 high-resolution view of Saturn's rings Aug. 23 at a range of 3.3 million kilometers (2 million miles). The planet’s limb is visible through the C-ring and the inner part of the B-ring. The ring shadows have been obscured by the bright band of light, evident on Saturn’s surface, that passed through the more transparent Cassini Division. The Cassini Division is the darker gap that extends from the lower center of this image to the upper left; it is about 5,000 km. (3,100 mi.) wide. Many bright and dark ringlets are seen throughout the complex ring system. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01962" onclick="window.open(this.href); return false;" title="Voir l'image PIA01962: High-resolution view of Saturn's rings sur le site de la NASA">Voir l'image PIA01962: High-resolution view of Saturn's rings sur le site de la NASA.</a></div>
PIA01962: High-resolution view of Saturn's rings
<h1>PIA01964: Saturn's ring region</h1><div class="PIA01964" lang="en" style="width:465px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This long exposure of the ring region about 150,000 to 200,000 kilometers (90,000 to 120,000 miles) from the center of Saturn captured the very faint G-ring, seen at left. The ring was discovered by Voyager 1 last fall at a similar phase angle. Voyager 2 was about 305,000 km. (189,000 mi.) away when it took this image Aug. 26. The small rectangular dots forming a regular pattern are reseau (reference) marks on the Voyager vidicon camera. The high-resolution detail in the A-ring has been washed out by the very long exposure needed to bring out the very tenuous G-ring. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01964" onclick="window.open(this.href); return false;" title="Voir l'image PIA01964: Saturn's ring region sur le site de la NASA">Voir l'image PIA01964: Saturn's ring region sur le site de la NASA.</a></div>
PIA01964: Saturn's ring region
<h1>PIA01988: Saturn's A-Ring</h1><div class="PIA01988" lang="en" style="width:765px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This view of Saturn's A-ring was obtained Aug. 23, when Voyager 2 was about 2.8 million kilometers (1.7 million miles) from the planet. Green, violet and ultraviolet image of the ring, which images were used to compile this is 15,000 km. (9,300 mi.) wide. Of note here are the Cassini Division, in the extreme lower right corner of this image; the Encke Division, the prominent gap in the A-ring, at upper left; and the inner F-ring shepherding satellite (1980S27), near the top of the frame. The Voyager project is managed for NASA by the Jet Propulsion Laboratory.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01988" onclick="window.open(this.href); return false;" title="Voir l'image PIA01988: Saturn's A-Ring sur le site de la NASA">Voir l'image PIA01988: Saturn's A-Ring sur le site de la NASA.</a></div>
PIA01988: Saturn's A-Ring
<h1>PIA02227: Two-image mosaic of Saturn's rings</h1><div class="PIA02227" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This computer-assembled two-image mosaic of Saturn's rings, taken by NASA's Voyager 1 on Nov. 6, 1980 at a range of 8 million kilometers (5 million miles), shows approximately 95 individual concentric features in the rings. The extraordinarily complex structure of the rings is easily seen across the entire span of the ring system. The ring structure, once thought to be produced by the gravitational interaction between Saturn's satellites and the orbit of ring particles, has now been found to be too complex for this explanation alone. The 14th satellite of Saturn, discovered by Voyager 1, is seen (upper left) just inside the narrow F-ring, which is less than 150 kilometers (93 miles wide). The Voyager Project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02227" onclick="window.open(this.href); return false;" title="Voir l'image PIA02227: Two-image mosaic of Saturn's rings sur le site de la NASA">Voir l'image PIA02227: Two-image mosaic of Saturn's rings sur le site de la NASA.</a></div>
PIA02227: Two-image mosaic of Saturn's rings
<h1>PIA02241: Saturn's rings</h1><div class="PIA02241" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">When seen from the unlit side, the rings of Saturn present a much different appearance from that familiar to telescopic observers. Relatively opaque areas like the B Ring turn black, while lightly populated zones, such as the C Ring and the Cassini Division, prove to excellent diffuse transmitters of sunlight. The A Ring, with intermediate opacity, is at an intermediate level of brightness.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02241" onclick="window.open(this.href); return false;" title="Voir l'image PIA02241: Saturn's rings sur le site de la NASA">Voir l'image PIA02241: Saturn's rings sur le site de la NASA.</a></div>
PIA02241: Saturn's rings
<h1>PIA02242: Mosaic of Saturn's rings</h1><div class="PIA02242" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This detailed mosaic of the underside of the Cassini Division was obtained by Voyager 1 with a resolution of about 10 kilometers. The classical Cassini Division appears here to the right of center as five bright rings with substantial blacks gap on either side. The inner edge of the A Ring, to the left of center, is the brightest part of this image. The fine-scale wave structure in this region has been interpreted as being the result of gravitational density waves.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02242" onclick="window.open(this.href); return false;" title="Voir l'image PIA02242: Mosaic of Saturn's rings sur le site de la NASA">Voir l'image PIA02242: Mosaic of Saturn's rings sur le site de la NASA.</a></div>
PIA02242: Mosaic of Saturn's rings
<h1>PIA02263: Saturn's 15th moon, 1980S28</h1><div class="PIA02263" lang="en" style="width:266px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Voyager 1 has found a 15th moon orbiting Saturn, visible near the bottom of this picture taken on Nov. 6, 1980, when the spacecraft was still 8 million kilometers (5 million miles) from Saturn. Voyager imaging team scientists discovered the moon Nov. 7, 1980, in the first of several programmed searches for new satellites of Saturn. The unique location of the 15th satellite, just 800 kilometers (500 miles) outside the outer edge of the A-ring, is especially significant in that this small body, approximately 100 kilometers (50 miles) in diameter, may be responsible for defining the outer edge of Saturn's bright ring system. The orbital period of the new satellite is approximately 14 hours, 20 minutes, the shortest orbit of any of Saturn's known satellites. The very narrow F-ring, approximately 4,000 kilometers (2,500 miles) outside the outer edge of the A-ring, is seen prominently in this picture. The Voyager Project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02263" onclick="window.open(this.href); return false;" title="Voir l'image PIA02263: Saturn's 15th moon, 1980S28 sur le site de la NASA">Voir l'image PIA02263: Saturn's 15th moon, 1980S28 sur le site de la NASA.</a></div>
PIA02263: Saturn's 15th moon, 1980S28
<h1>PIA02269: Saturn's ring system</h1><div class="PIA02269" lang="en" style="width:766px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Eight hours after its closest approach to Saturn on Nov. 12, 1980, Voyager 1 took this picture of the planet's ring system. Major features of the rings are clearly seen: from the top of the image down is the bright F-ring, the A-ring, the Cassini Division, the broad B-ring, and the C-ring (dark gray area). The spacecraft took this picture at a distance of 720,000 kilometers (446,000 miles) from an angle approximately 30 degrees above the ring plane. The unique lighting in this view brings out the many hundreds of bright and dark ringlets that make up this very thin, phonograph record-like ring system. The dark spokelike features seen in images taken during approach to Saturn now appear as bright streaks, indicating that they possess a strong forward-scattering property. The Voyager Project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02269" onclick="window.open(this.href); return false;" title="Voir l'image PIA02269: Saturn's ring system sur le site de la NASA">Voir l'image PIA02269: Saturn's ring system sur le site de la NASA.</a></div>
PIA02269: Saturn's ring system
<h1>PIA02271: Crescent of Saturn</h1><div class="PIA02271" lang="en" style="width:797px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">The crescent of Saturn, the planet's rings and their shadows are seen in this Voyager 1 image taken Nov. 13, 1980 at a distance of 1,500,000 kilometers (930,000 miles) as the spacecraft began to leave the Saturn system. The bright limb of Saturn is clearly visible through the A, B, and C rings. The dark band cutting through the crescent is the shadow of the rings. This image was overexposed to bring out detail in the rings, so the crescent appears artificially brighter. The Voyager Project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02271" onclick="window.open(this.href); return false;" title="Voir l'image PIA02271: Crescent of Saturn sur le site de la NASA">Voir l'image PIA02271: Crescent of Saturn sur le site de la NASA.</a></div>
PIA02271: Crescent of Saturn
<h1>PIA02272: Saturn's F-ring</h1><div class="PIA02272" lang="en" style="width:469px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">The three separate components of Saturn's F-ring are seen in this image taken by NASA's Voyager l on Nov. 12, 1980, from a range of 750,000 kilometers (466,000) miles. Two prominent bright strands appear twisted and kinked, while the fainter, innermost third strand largely lacks such non-uniformities. The kinking appearance of the ring may be caused by the gravitational perturbations of two nearby satellites -- S-13 on the outside and S-14 on the inside -- or the effect may be caused by electromagnetic forces upon small F-ring particles. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02272" onclick="window.open(this.href); return false;" title="Voir l'image PIA02272: Saturn's F-ring sur le site de la NASA">Voir l'image PIA02272: Saturn's F-ring sur le site de la NASA.</a></div>
PIA02272: Saturn's F-ring
<h1>PIA02274: Saturn's B-ring</h1><div class="PIA02274" lang="en" style="width:408px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Prominent dark spokes are visible in the outer half of Saturn’s broad B-ring in this Voyager 2 photograph taken on Aug. 3, 1981 from a range of about 22 million kilometers (14 million miles). The features appear as filamentary markings about 12,000 kilometers (7,S00 miles) long, which rotate around the planet with the motion of particles in the rings. The nature of these features, discovered by Voyager 1, is not totally understood, but scientists believe the spokes may be caused by dust levitated above the ring plane by electric fields; Voyager 2 photography of the rings edge-on, scheduled for Aug. 25, 1981, will provide an opportunity to test that theory. Because the Sun is now illuminating the rings from a higher angle, Voyager 2's photographs reveal ring structure from a greater distance than that seen by Voyager 1 in its November 1980 encounter. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02274" onclick="window.open(this.href); return false;" title="Voir l'image PIA02274: Saturn's B-ring sur le site de la NASA">Voir l'image PIA02274: Saturn's B-ring sur le site de la NASA.</a></div>
PIA02274: Saturn's B-ring
<h1>PIA02275: Saturn's rings - high resolution</h1><div class="PIA02275" lang="en" style="width:707px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 obtained this high-resolution picture of Saturn's rings Aug. 22, when the spacecraft was 4 million kilometers (2.5 million miles) away. Evident here are the numerous "spoke" features, in the B-ring; their very sharp, narrow appearance suggests short formation times. Scientists think electromagnetic forces are responsible in some way for these features, but no detailed theory has been worked out. Pictures such as this and analyses of Voyager 2's spoke movies may reveal more clues about the origins of these complex structures. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02275" onclick="window.open(this.href); return false;" title="Voir l'image PIA02275: Saturn's rings - high resolution sur le site de la NASA">Voir l'image PIA02275: Saturn's rings - high resolution sur le site de la NASA.</a></div>
PIA02275: Saturn's rings - high resolution
<h1>PIA02283: Saturn's F ring</h1><div class="PIA02283" lang="en" style="width:354px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Saturn's F, or outermost ring was photographed from the un-illuminated face of the rings by Voyager 1 at a range of 750,000 kilometers (470,000 miles). Complex structure is evident, with several components seen. Two narrow, braided, bright rings that trace distinct orbits are evident. Visible is a broader, very diffuse component about 35 kilometers (20 miles) in width. Also seen are "knots," which probably are local clumps of ring material, but may be mini-moons. The Voyager Project is managed by the Jet Propulsion Laboratory for NASA.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02283" onclick="window.open(this.href); return false;" title="Voir l'image PIA02283: Saturn's F ring sur le site de la NASA">Voir l'image PIA02283: Saturn's F ring sur le site de la NASA.</a></div>
PIA02283: Saturn's F ring