Galerie de photos des anneaux de la planète Saturne

<h1>PIA10505: Propeller Swarm</h1><div class="PIA10505" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>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 images during the spacecraft's 2004 orbital insertion maneuver, as Cassini skimmed just above the ringplane. </p><p>The propeller features were announced in 2006 (see <a href="/catalog/PIA07792">PIA07792</a>).</p><p>Each propeller is the visible gravitational disturbance created around a small moonlet embedded in the ring. The moonlets are likely between 10 and 100 meters (30 to 300 feet) across. Cassini imaging scientists have previously found that propeller swarms like this occur primarily in three narrow bands in the middle part of the A ring.</p><p>This view looks toward the sunlit side of the rings from about 35 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 25, 2008. The view was acquired at a distance of approximately 219,000 kilometers (136,000 miles) above the rings and at a Sun-ring-spacecraft, or phase, angle of 127 degrees. Image scale is 1 kilometer (0.6 mile) per pixel in the radial, or outward from Saturn direction and 2 kilometers (1 mile) in the longitudinal, or around Saturn, direction.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10505" onclick="window.open(this.href); return false;" title="Voir l'image PIA10505: Propeller Swarm sur le site de la NASA">Voir l'image PIA10505: Propeller Swarm sur le site de la NASA.</a></div>
PIA10505: Propeller Swarm
<h1>PIA10509: Streamer Channel</h1><div class="PIA10509" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft focuses on a streamer-channel feature in Saturn's F ring. </p><p>These features are created by the moon Prometheus as it closely approaches the ring once per orbit (see <a href="/catalog/PIA08397">PIA08397</a>).</p><p>This view looks toward the unilluminated side of the rings from about 36 degrees above the ringplane.The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 30, 2008. The view was acquired at a distance of approximately 970,000 kilometers (602,000 miles) from Saturn and at a Sun-ring-spacecraft, or phase, angle of 45 degrees. Image scale is 5 kilometers (3 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10509" onclick="window.open(this.href); return false;" title="Voir l'image PIA10509: Streamer Channel sur le site de la NASA">Voir l'image PIA10509: Streamer Channel sur le site de la NASA.</a></div>
PIA10509: Streamer Channel
<h1>PIA10516: Maxwell's That Ends Well</h1><div class="PIA10516" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>In the Maxwell gap within Saturn's C ring resides a narrow, eccentric ringlet of the same name. Astronomers are studying this ringlet to understand how it is maintained. </p><p>One possibility is that a small moon or two lurk in the gap. Cassini plans to search for any such moons.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 25, 2008 at a distance of approximately 876,000 kilometers (545,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 36 degrees. Image scale is 5 kilometers (3 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10516" onclick="window.open(this.href); return false;" title="Voir l'image PIA10516: Maxwell's That Ends Well sur le site de la NASA">Voir l'image PIA10516: Maxwell's That Ends Well sur le site de la NASA.</a></div>
PIA10516: Maxwell's That Ends Well
<h1>PIA10518: Smokey Ring</h1><div class="PIA10518" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The ever-changing F ring appears as wisps of smoke in this image taken downstream of the shepherd moon, Prometheus.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 23, 2008 at a distance of approximately 437,000 kilometers (272,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 89 degrees. Image scale is 2 kilometers (1 mile) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10518" onclick="window.open(this.href); return false;" title="Voir l'image PIA10518: Smokey Ring sur le site de la NASA">Voir l'image PIA10518: Smokey Ring sur le site de la NASA.</a></div>
PIA10518: Smokey Ring
<h1>PIA10519: Shadow of the Giant</h1><div class="PIA10519" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's shadow cuts across the rings in this view from high above the ringplane. While in the shadow the ring particles cool off and then heat up again when they enter the sunlight.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on Oct. 18, 2008 at a distance of approximately 749,000 kilometers (465,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 44 degrees. Image scale is 41 kilometers (26 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10519" onclick="window.open(this.href); return false;" title="Voir l'image PIA10519: Shadow of the Giant sur le site de la NASA">Voir l'image PIA10519: Shadow of the Giant sur le site de la NASA.</a></div>
PIA10519: Shadow of the Giant
<h1>PIA10521: B Ring in the Negative</h1><div class="PIA10521" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The B ring, shown here, is filled with radial structure. This image of the inner B ring was taken from the unlit side of the rings so the denser parts of the ring transmit less light and consequently appear darker here.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 21, 2008 at a distance of approximately 1.198 million kilometers (745,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 26 degrees. Image scale is 7 kilometers (4 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10521" onclick="window.open(this.href); return false;" title="Voir l'image PIA10521: B Ring in the Negative sur le site de la NASA">Voir l'image PIA10521: B Ring in the Negative sur le site de la NASA.</a></div>
PIA10521: B Ring in the Negative
<h1>PIA10522: Fingerprints of the Moons</h1><div class="PIA10522" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Encke and Keeler gaps are visible in this image of the outer A ring. Brightness variations are clearly visible in the Encke ringlet. </p><p>A density wave can be seen exterior to (to the left of) the Encke gap, and the region exterior to (to the left of) the Keeler gap is considerably brighter than the rest of the ring.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 23, 2008 at a distance of approximately 721,000 kilometers (448,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 58 degrees. Image scale is 4 kilometers (2 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10522" onclick="window.open(this.href); return false;" title="Voir l'image PIA10522: Fingerprints of the Moons sur le site de la NASA">Voir l'image PIA10522: Fingerprints of the Moons sur le site de la NASA.</a></div>
PIA10522: Fingerprints of the Moons
<h1>PIA10523: Ring Shapers</h1><div class="PIA10523" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two moons that have profound impacts on the rings, Mimas and Prometheus, are seen here with the F ring.</p><p>Mimas (396 kilometers, or 246 miles across), the larger and much more distant of the moons, creates the Cassini division between the A and B rings.</p><p>Prometheus (86 kilometers, or 53 miles across), although much smaller than Mimas, is half of a duo responsible for maintaining the narrow 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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10523" onclick="window.open(this.href); return false;" title="Voir l'image PIA10523: Ring Shapers sur le site de la NASA">Voir l'image PIA10523: Ring Shapers sur le site de la NASA.</a></div>
PIA10523: Ring Shapers
<h1>PIA10524: Lost Arc</h1><div class="PIA10524" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This low elevation image shows the G ring arc recently discovered by Cassini. This faint arc of material is maintained by a gravitational interaction with the moon Mimas.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 20, 2008 at a distance of approximately 1.185 million kilometers (736,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 23 degrees. Image scale is 7 kilometers (4 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10524" onclick="window.open(this.href); return false;" title="Voir l'image PIA10524: Lost Arc sur le site de la NASA">Voir l'image PIA10524: Lost Arc sur le site de la NASA.</a></div>
PIA10524: Lost Arc
<h1>PIA10525: Spokes in the Morning</h1><div class="PIA10525" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Broad, dark spokes in the B ring are clearly seen in this image of Saturn's rings. </p><p>The spokes are finally becoming quite common, as they were during the Voyager flybys. These observations and others like it seem to support the idea that the spokes become most prominent near equinox.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on Oct. 19, 2008 at a distance of approximately 1.011 million kilometers (628,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 29 degrees. Image scale is 57 kilometers (35 miles) per pixel.</p><p>Also visible in this image is the moon Janus off beyond the rings.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10525" onclick="window.open(this.href); return false;" title="Voir l'image PIA10525: Spokes in the Morning sur le site de la NASA">Voir l'image PIA10525: Spokes in the Morning sur le site de la NASA.</a></div>
PIA10525: Spokes in the Morning
<h1>PIA10528: Ring Disrupted</h1><div class="PIA10528" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>In this image of the F ring, taken shortly after its ring particles encountered the shepherd moon Prometheus, the disruption to the ring caused by the moon is evident.</p><p>The bright core of the ring and its neighboring faint strands show kinks where the moon's gravity has altered the orbits of the ring particles.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 23, 2008 at a distance of approximately 444,000 kilometers (276,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 88 degrees. Image scale is 2 kilometers (1 mile) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10528" onclick="window.open(this.href); return false;" title="Voir l'image PIA10528: Ring Disrupted sur le site de la NASA">Voir l'image PIA10528: Ring Disrupted sur le site de la NASA.</a></div>
PIA10528: Ring Disrupted
<h1>PIA10529: Making Waves</h1><div class="PIA10529" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The moons Pan (near center) and Daphnis (lower center) cruise through the Encke and Keeler gaps, respectively.</p><p>The edge waves used to discover Daphnis can be seen here as the brightening on either side of the moon. And although the edge waves Pan raises in the Encke gap are not visible here, the wakes caused by Pan's disturbance of the rings are clearly visible.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 20, 2008 at a distance of approximately 1.195 million kilometers (742,000 miles) from Pan and at a Sun-Pan-spacecraft, or phase, angle of 29 degrees. Image scale is 7 kilometers (4 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10529" onclick="window.open(this.href); return false;" title="Voir l'image PIA10529: Making Waves sur le site de la NASA">Voir l'image PIA10529: Making Waves sur le site de la NASA.</a></div>
PIA10529: Making Waves
<h1>PIA10530: Pandora Gets Kinky</h1><div class="PIA10530" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Pandora orbits near a kink in the F ring. Whether it was Prometheus or Pandora that created the kink is not obvious in this instance.</p><p>While not as impressive as the gores which Prometheus induces in the ring, the gravitational influence of this little moon is still important in shaping the F ring.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 15, 2008 at a distance of approximately 1.026 million kilometers (637,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 38 degrees. Image scale is 6 kilometers (4 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10530" onclick="window.open(this.href); return false;" title="Voir l'image PIA10530: Pandora Gets Kinky sur le site de la NASA">Voir l'image PIA10530: Pandora Gets Kinky sur le site de la NASA.</a></div>
PIA10530: Pandora Gets Kinky
<h1>PIA10532: Prometheus Lurking in the Rings</h1><div class="PIA10532" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Prometheus shows up bright in this image of the dark side of the rings. </p><p>The bright band that appears above Prometheus in this image is the Cassini division separating the (very dark) B ring and the A ring. The C ring, interior to the B ring, is clearly visible.</p><p>10532The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 20, 2008 at a distance of approximately 1.076 million kilometers (668,000 miles) from Prometheus and at a Sun-Prometheus-spacecraft, or phase, angle of 26 degrees. Image scale is 6 kilometers (4 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10532" onclick="window.open(this.href); return false;" title="Voir l'image PIA10532: Prometheus Lurking in the Rings sur le site de la NASA">Voir l'image PIA10532: Prometheus Lurking in the Rings sur le site de la NASA.</a></div>
PIA10532: Prometheus Lurking in the Rings
<h1>PIA10537: Many Faces of the C Ring</h1><div class="PIA10537" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The range of features to be found in Saturn's C ring is seen in this Cassini image.</p><p>Near the bottom of the frame is a narrow eccentric ringlet lying in a gap that researchers suspect may contain one or more very small moons. Farther up, the bright feature is one of the C ring's "plateaus." These bright features in the C ring are much denser than the surrounding material, and their origin is also being studied.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Nov. 9, 2008 at a distance of approximately 339,000 kilometers (211,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 101 degrees. Image scale is 2 kilometers (1 mile) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10537" onclick="window.open(this.href); return false;" title="Voir l'image PIA10537: Many Faces of the C Ring sur le site de la NASA">Voir l'image PIA10537: Many Faces of the C Ring sur le site de la NASA.</a></div>
PIA10537: Many Faces of the C Ring
<h1>PIA10539: Out of the Shadow</h1><div class="PIA10539" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A large group of spokes emerges from Saturn's shadow in this image taken of the morning side of the rings. Such groupings may hold clues to the manner in which these features are formed.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on Nov. 2, 2008 at a distance of approximately 869,000 kilometers (540,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 37 degrees. Image scale is 48 kilometers (30 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10539" onclick="window.open(this.href); return false;" title="Voir l'image PIA10539: Out of the Shadow sur le site de la NASA">Voir l'image PIA10539: Out of the Shadow sur le site de la NASA.</a></div>
PIA10539: Out of the Shadow
<h1>PIA10545: Fingerprints of the Shepherds</h1><div class="PIA10545" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The F ring and outer edge of the A ring can be seen in this image. A kink feature is visible in the F ring, probably caused by Prometheus or Pandora, the F ring's shepherd moons. </p><p>Another moon, Daphnis, can be seen in the Keeler gap near the outer edge of the A ring, along with the waves Daphnis raises on that gap's edges. Waves like these allow researchers to locate new moons in gaps and also estimate their masses.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Nov. 7, 2008 at a distance of approximately 992,000 kilometers (616,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 48 degrees. Image scale is 6 kilometers (3 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10545" onclick="window.open(this.href); return false;" title="Voir l'image PIA10545: Fingerprints of the Shepherds sur le site de la NASA">Voir l'image PIA10545: Fingerprints of the Shepherds sur le site de la NASA.</a></div>
PIA10545: Fingerprints of the Shepherds
<h1>PIA10550: Dusty Wedge</h1><div class="PIA10550" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The ghostly features in Saturn's B ring called spokes are making an appearance again as the Cassini spacecraft continues its tour of the Saturn system. </p><p>These dusty features on the rings are often wedge-shaped, as this one is, with the inner portions of the spoke being wider than the outer portions due to electromagnetic effects on the dust particles.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on Nov. 26, 2008 at a distance of approximately 922,000 kilometers (573,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 39 degrees. Image scale is 52 kilometers (32 miles) per pixel. </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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10550" onclick="window.open(this.href); return false;" title="Voir l'image PIA10550: Dusty Wedge sur le site de la NASA">Voir l'image PIA10550: Dusty Wedge sur le site de la NASA.</a></div>
PIA10550: Dusty Wedge
<h1>PIA10554: Not-Quite-Empty Gap</h1><div class="PIA10554" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Encke Gap, the broad, vertical dark band running down the center of this image, is maintained by the small moon Pan (not pictured). Pan also shepherds three ringlets, all of which appear here as faint, narrow bands within the Encke Gap. </p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 19, 2008 at a distance of approximately 271,000 kilometers (168,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 138 degrees. Image scale is about 1 kilometer per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10554" onclick="window.open(this.href); return false;" title="Voir l'image PIA10554: Not-Quite-Empty Gap sur le site de la NASA">Voir l'image PIA10554: Not-Quite-Empty Gap sur le site de la NASA.</a></div>
PIA10554: Not-Quite-Empty Gap
<h1>PIA11102: Anthe and Methone Arcs</h1><div class="PIA11102" lang="en" style="width:591px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA11102_fig1.jpg" class="external free" target="wpext"></a><br /> Click on image for larger annotated version</p><p>Recent Cassini images show arcs of material co-orbiting with the Saturnian moons Anthe and Methone.</p><p>Arrows indicate the positions of Anthe, at top left, and Methone, at bottom right. Micrometeoroid impacts on the moons are the likely source of the arc material. </p><p>Cassini imaging scientists believe the process that maintains the Anthe and Methone arcs is similar to that which maintains the arc in the G ring (see <a href="/catalog/PIA08327">PIA08327</a>). The general brightness of the image (along with the faint horizontal banding pattern) results from the long exposure time of 15 seconds required to capture the extremely faint ring arc and the processing needed to enhance its visibility (which also enhances the digital background noise in the image). The image was digitally processed to remove most of the background noise. This view looks toward the un-illuminated side of the rings from about 2 degrees above the ringplane.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 29, 2007. The view was acquired at a distance of approximately 2.3 million kilometers (1.4 million miles) from Anthe and 2.2 million kilometers (1.4 million miles) from Methone. Image scale is 14 kilometers (9 miles) per pixel on Anthe and 13 kilometers (8 miles) on Methone. </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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA11102" onclick="window.open(this.href); return false;" title="Voir l'image PIA11102: Anthe and Methone Arcs sur le site de la NASA">Voir l'image PIA11102: Anthe and Methone Arcs sur le site de la NASA.</a></div>
PIA11102: Anthe and Methone Arcs
<h1>PIA11142: A Full Sweep of Saturn's Rings</h1><div class="PIA11142" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA11142_fig1.jpg" class="external free" target="wpext"><br />Annotated Version</a><br />Click on the image for full view</p><p>Details of Saturn's icy rings are visible in this sweeping view from Cassini of the planet's glorious ring system. </p><p>This natural color mosaic, taken from 10 degrees below the illuminated side of the rings, shows, from left to right, radially outward from Saturn, the C ring (with its Colombo and Maxwell gaps); the B ring and the Cassini division beyond, with the intervening Huygens gap; the A ring (with its Encke and Keeler gaps); and, on the far right, the narrow F ring. The total span covers approximately 65,700 kilometers (40,800 miles). </p><p>Although it is too faint to be seen here, the D ring is located just to the left of the C ring. </p><p>It is interesting to compare this view with <a href="/catalog/PIA08389">PIA08389</a>, which shows the unilluminated side of the rings. The difference in brightness of the B ring relative to the other rings is striking. When illuminated directly by the sun, the B ring appears brighter than the adjacent A and C rings; however, when viewing the unlit side of the B ring, the A and C rings appear brighter. This phenomenon occurs because the density of the B ring is greater than that of the A or C rings.</p><p>The mosaic was constructed from 45 narrow-angle-camera images—15 separate sets of red, green and blue images—taken over the course of about four hours, as Cassini scanned across the rings.</p><p>The images in this view were obtained by NASA's Cassini spacecraft on Nov. 26, 2008, at a distance of approximately 1.1 million kilometers (700,000 miles) from Saturn and at a sun-Saturn-spacecraft, or phase, angle of 28 degrees. Image scale in the radial (horizontal) direction is about 7 kilometers (4.3 miles) per pixel.</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 Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA11142" onclick="window.open(this.href); return false;" title="Voir l'image PIA11142: A Full Sweep of Saturn's Rings sur le site de la NASA">Voir l'image PIA11142: A Full Sweep of Saturn's Rings sur le site de la NASA.</a></div>
PIA11142: A Full Sweep of Saturn's Rings
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