Galerie de photos des anneaux de la planète Saturne

<h1>PIA09863: Seeing the C Ring</h1><div class="PIA09863" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft views the gauzy C ring of Saturn, with the cloud-streaked planet providing a dramatic backdrop.</p><p>This view looks toward the unilluminated side of the rings from about 32 degrees above the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 5, 2008. The view was obtained at a distance of approximately 1.5 million kilometers (960,000 miles) from Saturn and at a Sun-ring-spacecraft, or phase, angle of 46 degrees. Image scale is about 11 kilometers (7 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">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09863" onclick="window.open(this.href); return false;" title="Voir l'image PIA09863: Seeing the C Ring sur le site de la NASA">Voir l'image PIA09863: Seeing the C Ring sur le site de la NASA.</a></div>
PIA09863: Seeing the C Ring
<h1>PIA09865: Grandeur of the Rings</h1><div class="PIA09865" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>From on high, the Cassini spacecraft spies a group of three ring moons in their travels around Saturn.</p><p>Janus (181 kilometers, or 113 miles across) is seen at top, while Pandora (84 kilometers, or 52 miles across) hugs the outer edge of the narrow F ring. More difficult to spot is Pan (26 kilometers, or 16 miles across), which is a mere speck in this view. Pan can be seen in the Encke Gap, near center left. (See <a href="/catalog/PIA08389">PIA08389</a> for a labeled Cassini map of the rings.)</p><p>The speck seen between the A and F rings at left is a background star.</p><p>This view looks toward the unilluminated side of the rings from about 40 degrees above the ringplane. Images taken using red, green and blue spectral filters were combined to create this natural color view. </p><p>Bright clumps of material in the narrow F ring moved in their orbits between each of the color exposures, creating a chromatic misalignment that provides some sense of the continuous motion in the ring system.</p><p>The images were obtained with the Cassini spacecraft wide-angle camera on Feb. 7, 2008 at a distance of approximately 1.1 million kilometers (700,000 miles) from Saturn. Image scale at the center of the view is 74 kilometers (46 miles) per pixel in the radial, or outward from 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">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09865" onclick="window.open(this.href); return false;" title="Voir l'image PIA09865: Grandeur of the Rings sur le site de la NASA">Voir l'image PIA09865: Grandeur of the Rings sur le site de la NASA.</a></div>
PIA09865: Grandeur of the Rings
<h1>PIA09873: Following the Clouds</h1><div class="PIA09873" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft monitors the myriad cloud forms that drift in Saturn's atmosphere, helping scientists gain a better understanding of how energy is transported around, and from within, the planet.</p><p>This view looks toward the unilluminated side of the rings from about 23 degrees above the ringplane. Saturn's shadow hides the rings at top.</p><p>The image was taken with the Cassini spacecraft wide-angle camera on Feb. 25, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 752 nanometers. The view was obtained at a distance of approximately 1.6 million kilometers (1 million miles) from Saturn. Image scale is 94 kilometers (58 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/PIA09873" onclick="window.open(this.href); return false;" title="Voir l'image PIA09873: Following the Clouds sur le site de la NASA">Voir l'image PIA09873: Following the Clouds sur le site de la NASA.</a></div>
PIA09873: Following the Clouds
<h1>PIA09875: High-phase Rings</h1><div class="PIA09875" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft captured this dramatic view of the unilluminated side of Saturn's rings seen at a high phase angle.</p><p>Phase angle refers to the angle formed by the Sun, the object being viewed (the rings) and the spacecraft. At an angle of zero degrees the Sun is directly behind Cassini; at 180 degrees the Sun is directly in front of the spacecraft.</p><p>Many otherwise faint ring features brighten substantially when viewed at high phase. In this image, normally faint regions within the D and inner C rings can be seen extending from lower right toward center.</p><p>The many small specks in the image were created by cosmic rays striking the camera's detector.</p><p>This view looks toward the rings from about 2 degrees above the ringplane. The planet's shadow darkens the scene at lower right.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on Feb. 20, 2008. The view was obtained at a distance of approximately 211,000 kilometers (131,000 miles) from Saturn and at a phase angle of 166 degrees. Image scale on the sky at the distance of Saturn is 9 kilometers (6 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/PIA09875" onclick="window.open(this.href); return false;" title="Voir l'image PIA09875: High-phase Rings sur le site de la NASA">Voir l'image PIA09875: High-phase Rings sur le site de la NASA.</a></div>
PIA09875: High-phase Rings
<h1>PIA09888: F Ring Informants</h1><div class="PIA09888" lang="en" style="width:682px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Ever-changing kinks and wiggles define Saturn's dynamic F ring. The evolution of F-ring features like those seen here are of interest to ring scientists because they reveal a great deal about the processes shaping the ring's structure.</p><p>This view looks toward the unilluminated side of the rings from about 4 degrees above the ringplane.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 15, 2008. The view was obtained at a distance of approximately 1.3 million kilometers (821,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 16 degrees. Image scale is 8 kilometers (5 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/PIA09888" onclick="window.open(this.href); return false;" title="Voir l'image PIA09888: F Ring Informants sur le site de la NASA">Voir l'image PIA09888: F Ring Informants sur le site de la NASA.</a></div>
PIA09888: F Ring Informants
<h1>PIA09890: The Orbiting Fleet</h1><div class="PIA09890" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A fleet of small moons patrols the outskirts of Saturn's icy rings.</p><p>The shepherd moons Prometheus (102 kilometers, or 63 miles across) and Pandora (84 kilometers, or 52 miles across) are seen respectively interior and exterior to the narrow F ring at lower left.</p><p>Janus (181 kilometers, or 113 miles across) appears at center right, and Mimas (397 kilometers, or 247 miles across) is visible at lower right.</p><p>A 2007 movie sequence acquired during a Cassini ringplane crossing (<a href="/catalog/PIA08356">PIA08356</a>) presents a similar view, with moons in motion.</p><p>This view looks toward the unilluminated side of the rings from about 14 degrees above the ringplane. A background star is faintly visible directly between Prometheus and Mimas.</p><p>The image was taken in visible blue light with the Cassini spacecraft wide-angle camera on March 16, 2008. The view was acquired at a distance of approximately 1.5 million kilometers (960,000 miles) from Saturn. Image scale is 97 kilometers (60 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/PIA09890" onclick="window.open(this.href); return false;" title="Voir l'image PIA09890: The Orbiting Fleet sur le site de la NASA">Voir l'image PIA09890: The Orbiting Fleet sur le site de la NASA.</a></div>
PIA09890: The Orbiting Fleet
<h1>PIA09892: Scrambled Edge</h1><div class="PIA09892" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The outer edge of Saturn's A ring displays intriguing structure in this Cassini spacecraft view. </p><p>The scrambled pattern in the outer edge is not unlike the pattern Cassini recently imaged in the outer B-ring edge (see <a href="/catalog/PIA09855"> PIA09855</a>). </p><p>As with the B-ring edge, the pattern could represent clumping caused by periodic compression of this ring region. </p><p>This scene looks toward the sunlit side of the rings from about 42 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 23, 2008. The view was acquired at a distance of approximately 192,000 kilometers (119,000 miles) from the rings. Image scale is 1 kilometer (0.6 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/PIA09892" onclick="window.open(this.href); return false;" title="Voir l'image PIA09892: Scrambled Edge sur le site de la NASA">Voir l'image PIA09892: Scrambled Edge sur le site de la NASA.</a></div>
PIA09892: Scrambled Edge
<h1>PIA09894: Saturn's Watch Spiral</h1><div class="PIA09894" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Spiral density waves in Saturn's A ring reveal the gravitational signatures of distant moons as they subtly tug on the countless particles orbiting in the ring plane.</p><p>Resulting from a process called orbital resonance, a spiral density wave is a spiral-shaped massing of particles that tightly winds many times around the planet. Thus, the wave patterns seen here represent successive windings of each wave, like a close-up view of a watch spring.</p><p>Ring scientists can read these patterns, learning from them how quickly the rings are spreading and the amount of mass contained in a region.</p><p>This view looks toward the sunlit side of the rings from about 42 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 1, 2008. The view was obtained at a distance of approximately 268,000 kilometers (167,000 miles) from Saturn. Image scale is 1 kilometer (0.6 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/PIA09894" onclick="window.open(this.href); return false;" title="Voir l'image PIA09894: Saturn's Watch Spiral sur le site de la NASA">Voir l'image PIA09894: Saturn's Watch Spiral sur le site de la NASA.</a></div>
PIA09894: Saturn's Watch Spiral
<h1>PIA09896: Dark Boundary</h1><div class="PIA09896" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's semitransparent rings arc smoothly around the gas giant, abruptly disappearing where they pass through the planet's shadow.</p><p>This view looks toward the unilluminated side of the rings from about 18 degrees above the ringplane. The image was taken with the Cassini spacecraft wide-angle camera on April 15, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 728 nanometers. The view was obtained at a distance of approximately 1.5 million kilometers (907,000 miles) from Saturn. Image scale is 84 kilometers (52 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/PIA09896" onclick="window.open(this.href); return false;" title="Voir l'image PIA09896: Dark Boundary sur le site de la NASA">Voir l'image PIA09896: Dark Boundary sur le site de la NASA.</a></div>
PIA09896: Dark Boundary
<h1>PIA09897: Moons that Pass in the Night</h1><div class="PIA09897" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two of Saturn's ring moons draw close momentarily, before the inner of the pair moves off alone.</p><p>Atlas (30 kilometers, or 19 miles across, at center right) passes Prometheus (86 kilometers, or 53 miles across, at center left) about once a month, then slowly and steadily pulls ahead of its slower moving sibling.</p><p>This view looks toward the unilluminated side of the rings from about 23 degrees above the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 6, 2008. The view was acquired at a distance of approximately 1.6 million kilometers (975,000 miles) from Atlas. Image scale is 9 kilometers (6 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/PIA09897" onclick="window.open(this.href); return false;" title="Voir l'image PIA09897: Moons that Pass in the Night sur le site de la NASA">Voir l'image PIA09897: Moons that Pass in the Night sur le site de la NASA.</a></div>
PIA09897: Moons that Pass in the Night
<h1>PIA09899: The Shepherd and Saturn</h1><div class="PIA09899" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's brilliant limb shines through the semi-transparent A ring, while the outer F ring shepherd moon hangs against the black sky.</p><p>F-ring shepherding moon Pandora (81 kilometers, or 50 miles across), along with the inner shepherd moon Prometheus (see <a href="/catalog/PIA09887">PIA09887</a>), helps to keep the narrow lanes of the F ring in check.</p><p>This view looks toward the unilluminated side of the rings from about 15 degrees above the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 5, 2008. The view was obtained at a distance of approximately 1.3 million kilometers (814,000 miles) from Pandora. Image scale is 8 kilometers (5 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/PIA09899" onclick="window.open(this.href); return false;" title="Voir l'image PIA09899: The Shepherd and Saturn sur le site de la NASA">Voir l'image PIA09899: The Shepherd and Saturn sur le site de la NASA.</a></div>
PIA09899: The Shepherd and Saturn
<h1>PIA09901: On the Border</h1><div class="PIA09901" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The sharp change in brightness that runs diagonally across the center of this image represents the boundary between Saturn's C and B rings.</p><p>This location sits at about 92,000 kilometers (57,200 miles) from Saturn.</p><p>The B ring (at lower left) appears darker than the C ring from this perspective, above the unilluminated side of the rings, because the more densely populated B ring strongly attenuates sunlight passing through it.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 7, 2008. The view was obtained at a distance of approximately 1.4 million kilometers (888,000 miles) from Saturn, and from about 32 degrees above the ringplane. Image scale is 8 kilometers (5 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/PIA09901" onclick="window.open(this.href); return false;" title="Voir l'image PIA09901: On the Border sur le site de la NASA">Voir l'image PIA09901: On the Border sur le site de la NASA.</a></div>
PIA09901: On the Border
<h1>PIA09902: Ringcraft</h1><div class="PIA09902" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft captures a view showing two of Saturn's moons and their gravitational effects on nearby rings.</p><p>At top, Daphnis (8 kilometers, or 5 miles across at its widest point) streaks through the Keeler Gap, with its ever-present edge waves. At center, Prometheus (86 kilometers, or 53 miles across at its widest point) pulls away from a recent encounter with the F ring. A bright background star is visible below the F ring.</p><p>This view looks toward the unilluminated side of the rings from about 41 degrees above the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 8, 2008. The view was acquired at a distance of approximately 1.3 million kilometers (788,000 miles) from Prometheus and at a Sun-Prometheus-spacecraft, or phase, angle of 53 degrees. Image scale is 8 kilometers (5 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/PIA09902" onclick="window.open(this.href); return false;" title="Voir l'image PIA09902: Ringcraft sur le site de la NASA">Voir l'image PIA09902: Ringcraft sur le site de la NASA.</a></div>
PIA09902: Ringcraft
<h1>PIA09904: Immense Vortices</h1><div class="PIA09904" lang="en" style="width:756px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A trio of large storms embraces in Saturn's high north. The three prominent vortices seen here are each wide enough to span the distance from New York City to Denver, or from London to Moscow.</p><p>This view looks toward the unilluminated side of the rings from about 30 degrees above the ringplane. The image was taken with the Cassini spacecraft wide-angle camera on April 17, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 939 nanometers. The view was obtained at a distance of approximately 1.4 million kilometers (899,000 miles) from Saturn. Image scale is 83 kilometers (52 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/PIA09904" onclick="window.open(this.href); return false;" title="Voir l'image PIA09904: Immense Vortices sur le site de la NASA">Voir l'image PIA09904: Immense Vortices sur le site de la NASA.</a></div>
PIA09904: Immense Vortices
<h1>PIA09905: Bird's Eye View</h1><div class="PIA09905" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft looks down from a high-inclination orbit to spot two of Saturn's ring moons.</p><p>Prometheus (86 kilometers, or 53 miles across at its widest point) leads a train of dark gores in the narrow F ring. Farther from Saturn lies Janus (179 kilometers, or 111 miles across at its widest point), which sits in its own faint ring—invisible here but clearly seen in <a href="/catalog/PIA08328">PIA08328</a>.</p><p>This view looks toward the unilluminated side of the rings from about 62 degrees above the ringplane. The image was taken in visible light with the Cassini spacecraft wide-angle camera on April 19, 2008. The view was acquired at a distance of approximately 740,000 kilometers (460,000 miles) from Saturn. Image scale is 41 kilometers (25 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/PIA09905" onclick="window.open(this.href); return false;" title="Voir l'image PIA09905: Bird's Eye View sur le site de la NASA">Voir l'image PIA09905: Bird's Eye View sur le site de la NASA.</a></div>
PIA09905: Bird's Eye View
<h1>PIA09906: Revealing Saturn's Colors</h1><div class="PIA09906" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Stately Saturn sits surrounded by its darkened disk of ice. An increasing range of hues has become visible in the northern hemisphere as spring approaches and the ring shadows slide southward.</p><p>This view looks toward the unilluminated side of the rings from about 17 degrees above the ringplane. Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were acquired with the Cassini spacecraft wide-angle camera on April 15, 2008 at a distance of approximately 1.5 million kilometers (906,000 miles) from Saturn. Image scale is 84 kilometers (52 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/PIA09906" onclick="window.open(this.href); return false;" title="Voir l'image PIA09906: Revealing Saturn's Colors sur le site de la NASA">Voir l'image PIA09906: Revealing Saturn's Colors sur le site de la NASA.</a></div>
PIA09906: Revealing Saturn's Colors
<h1>PIA09907: Atlas and Daphnis</h1><div class="PIA09907" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Looking upward from beneath the ringplane, the Cassini spacecraft spies Saturn's "wave maker" and "flying saucer" moons.</p><p>Daphnis (8 kilometers, or 5 miles across at its widest point) and its gravitationally induced edge waves are seen at left within the Keeler Gap. The equatorial bulge on Atlas (30 kilometers, or 19 miles across at its widest point) is clearly visible here.</p><p>See <a href="/catalog/PIA06237">PIA06237</a> and <a href="/catalog/PIA08405">PIA08405</a> for additional images and information about these two moons.</p><p>This view looks toward the sunlit side of the rings from about 16 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 22, 2008. The view was acquired at a distance of approximately 898,000 kilometers (558,000 miles) from Saturn. Image scale is about 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/PIA09907" onclick="window.open(this.href); return false;" title="Voir l'image PIA09907: Atlas and Daphnis sur le site de la NASA">Voir l'image PIA09907: Atlas and Daphnis sur le site de la NASA.</a></div>
PIA09907: Atlas and Daphnis
<h1>PIA09908: Northward Through the Rings</h1><div class="PIA09908" lang="en" style="width:508px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft peers through the gossamer strands of Saturn's innermost rings, whose own shadows adorn the planet beyond.</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 wide-angle camera on April 21, 2008. The view was obtained at a distance of approximately 620,000 kilometers (385,000 miles) from Saturn. Image scale is 67 kilometers (42 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/PIA09908" onclick="window.open(this.href); return false;" title="Voir l'image PIA09908: Northward Through the Rings sur le site de la NASA">Voir l'image PIA09908: Northward Through the Rings sur le site de la NASA.</a></div>
PIA09908: Northward Through the Rings
<h1>PIA09912: Splinter of Light</h1><div class="PIA09912" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A sliver of "ringshine" pierces the darkness of Saturn's night side.</p><p>This view looks toward the unilluminated side of the rings from about 58 degrees above the ringplane.</p><p>The ring shadows fall into darkness beyond the terminator in the north. South of the equator, a dim glow brightens the darkened globe. This light, called ringshine, comes from sunlight reflected off the sunward side of the expansive rings (the opposite face of the ringplane from this perspective). The effect is pronounced in the eclipse view <a href="/catalog/PIA08329">PIA08329</a>.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on April 19, 2008. The view was obtained at a distance of approximately 851,000 kilometers (529,000 miles) from Saturn. 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/PIA09912" onclick="window.open(this.href); return false;" title="Voir l'image PIA09912: Splinter of Light sur le site de la NASA">Voir l'image PIA09912: Splinter of Light sur le site de la NASA.</a></div>
PIA09912: Splinter of Light
<h1>PIA09913: A Capital Storm</h1><div class="PIA09913" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A great, eye-like vortex stares out of Saturn's roiling atmosphere. The storm is wide enough to span the distance from Washington, DC to London. Bright Enceladus (504 kilometers, or 313 miles across) drifts past in the foreground.</p><p>This view looks toward the unilluminated side of the rings from about 3 degrees above the ringplane.</p><p>The image was taken with the Cassini spacecraft wide-angle camera on April 23, 2008 using a combination of spectral filters sensitive to wavelengths of polarized infrared light centered at 752 nanometers. The view was acquired at a distance of approximately 1.3 million kilometers (783,000 miles) from Saturn. Image scale is 72 kilometers (45 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/PIA09913" onclick="window.open(this.href); return false;" title="Voir l'image PIA09913: A Capital Storm sur le site de la NASA">Voir l'image PIA09913: A Capital Storm sur le site de la NASA.</a></div>
PIA09913: A Capital Storm
<h1>PIA09919: F Ring Close-up</h1><div class="PIA09919" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Multiple tenuous strands flank the brilliant core of Saturn's F ring. These delicate, flanking ringlets wind through the F ring, creating a tight spiral.</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 May 10, 2008. The view was obtained at a distance of approximately 262,000 kilometers (163,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 137 degrees. Image scale is 1 kilometer (0.6 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/PIA09919" onclick="window.open(this.href); return false;" title="Voir l'image PIA09919: F Ring Close-up sur le site de la NASA">Voir l'image PIA09919: F Ring Close-up sur le site de la NASA.</a></div>
PIA09919: F Ring Close-up
<h1>PIA10079: Propeller Belt</h1><div class="PIA10079" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA10079_fig1.jpg"></a><br />Click on the image for annotated version</p><p>The Cassini spacecraft captures eight new propeller-like features within Saturn's A ring in what may be the propeller "hot zone" of Saturn's rings. </p><p>Propeller features form around small moonlets that are not massive enough to clear out ring material, but are still able to pull smaller ring particles into a shape reminiscent of an airplane propeller. Scientists believe that propellers represent moonlet wakes, which are denser than the surrounding ring material and appear bright in the images.</p><p>Propellers were first discovered in Cassini images taken during Saturn orbit insertion in 2004. This new image is from a more extensive study of the full A ring and provides evidence that these features are not distributed evenly as previously thought, but are instead grouped in a 3,000 kilometer-wide (1,860 mile) propeller belt. </p><p>This image shows four new propellers and was put together from images in the Planetary Data System, a web site which archives and distributes scientific data from NASA planetary missions. The largest propeller seen here is noted in the white dashed box, and it indicates the presence of a 150-meter (490-foot) moonlet. The size is inferred from the radial separation of the propeller wings. The propeller is seen in another image and is shown in the upper left box. The reappearance of the propellers clearly demonstrates the orbital motion of the propellers. The region enclosed in the red box is zoomed and shown in the top panel of <a href="/catalog/PIA10080">PIA10080</a>. Three additional propellers are noted with white dashed circles on the right. Very bright and round spots are artifacts. But some of the bright elongated and non-saturated streaks could be smaller propellers that are not resolved in the image.</p><p>This view is made up of two images from a set of 26 images with a complete radial coverage of the A ring and part of the Cassini division taken during an occultation of the star Antares (alpha Scorpii; brightest spot on top) on Aug. 20, 2005. </p><p>In this clear filter image, the Cassini spacecraft narrow-angle camera observed the unlit side of the rings, with a phase angle of 126 degrees. The images were taken at 1 minute intervals with 0.05 seconds exposure time. Image resolution is 1 kilometer (0.6 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 was designed, developed and assembled at JPL. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10079" onclick="window.open(this.href); return false;" title="Voir l'image PIA10079: Propeller Belt sur le site de la NASA">Voir l'image PIA10079: Propeller Belt sur le site de la NASA.</a></div>
PIA10079: Propeller Belt
<h1>PIA10081: Saturn's Recycling Rings</h1><div class="PIA10081" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This is an artist concept of a close-up view of Saturn's ring particles. The planet Saturn is seen in the background (yellow and brown). The particles (blue) are composed mostly of ice, but are not uniform. They clump together to form elongated, curved aggregates, continually forming and dispersing. The space between the clumps is mostly empty. The largest individual particles shown are a few meters (yards) across. Image by Marty Peterson, based on a 1984 image by William K. Hartmann. Hartmann's image illustrated early research by Stuart Weidenschilling and co-workers at the Planetary Science Insitute, on dynamical ephemeral bodies in Saturn's 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 was designed, developed and assembled at JPL. The ultraviolet imaging spectrograph was designed and built at, and the team is based at the University of Colorado, Boulder. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a>. The ultraviolet imaging spectrograph team home page is at <a href="http://lasp.colorado.edu/cassini">http://lasp.colorado.edu/cassini</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10081" onclick="window.open(this.href); return false;" title="Voir l'image PIA10081: Saturn's Recycling Rings sur le site de la NASA">Voir l'image PIA10081: Saturn's Recycling Rings sur le site de la NASA.</a></div>
PIA10081: Saturn's Recycling Rings
<h1>PIA10082: "Staring Mittens" (Animation)</h1><div class="PIA10082" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA10082.mov"><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10082" onclick="window.open(this.href); return false;" title="Voir l'image PIA10082: "Staring Mittens" (Animation) sur le site de la NASA">Voir l'image PIA10082: "Staring Mittens" (Animation) sur le site de la NASA.</a></div>
PIA10082: "Staring Mittens" (Animation)
<h1>PIA10083: Clumpy Moons</h1><div class="PIA10083" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA10083.mov"></a><br />Click on the image for movie of<br />Clumpy Moons</p><p>This is a computer simulation of the final stage of the growth of a "clump" in Saturn's rings. The gravity from a hypothesized moonlet (solid gray sphere in frame center) has collected smaller ring particles (black) to form a temporary aggregation. The particles shown in the simulation are from centimeters to meters (inches to yards) across. The gray moonlet is 61 meters (200 feet) across.</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 was designed, developed and assembled at JPL. The ultraviolet imaging spectrograph was designed and built at, and the team is based at the University of Colorado, Boulder. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a>. The ultraviolet imaging spectrograph team home page is at <a href="http://lasp.colorado.edu/cassini">http://lasp.colorado.edu/cassini</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10083" onclick="window.open(this.href); return false;" title="Voir l'image PIA10083: Clumpy Moons sur le site de la NASA">Voir l'image PIA10083: Clumpy Moons sur le site de la NASA.</a></div>
PIA10083: Clumpy Moons
<h1>PIA10233: Saturn's Ring Rhythm #2</h1><div class="PIA10233" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>For an Earth observer on May 3, 2005, the Cassini spacecraft appeared to pass behind the rings, then Saturn, then the rings again (the red line). The discovered harmonic structure was found on both the way in and out, but only in locations where particles are densely packed together, such as the B ring and the innermost part of the A ring. </p><p>The May 3 radio experiment and several others to follow in 2005 showed that the regular spacing of the harmonic structure vary from 100 to 250 meters (320 to 820 feet), depending on the location in the rings. To see an illustration of this occultation see <a href="/catalog/PIA10232">PIA10232</a>.</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 was designed, developed and assembled at JPL. The radio science team is based at JPL.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. For more information on the radio science team visit <a href="http://saturn.jpl.nasa.gov/spacecraft/instruments-cassini-rss.cfm">http://saturn.jpl.nasa.gov/spacecraft/instruments-cassini-rss.cfm</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10233" onclick="window.open(this.href); return false;" title="Voir l'image PIA10233: Saturn's Ring Rhythm #2 sur le site de la NASA">Voir l'image PIA10233: Saturn's Ring Rhythm #2 sur le site de la NASA.</a></div>
PIA10233: Saturn's Ring Rhythm #2
<h1>PIA10246: Artist Concept of Rhea Rings</h1><div class="PIA10246" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This is an artist concept of the ring of debris that may orbit Saturn's second-largest moon, Rhea. The suggested disk of solid material is exaggerated in density here for clarity. </p><p>Due to a decrease in the number of electrons detected by NASA's Cassini spacecraft on either side of the moon, scientists suggest that rings are the likeliest cause of these electrons being blocked before they reach Cassini.</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 was designed, developed and assembled at JPL. The magnetospheric imaging instrument was designed, built and is operated by an international team led by the Applied Physics Laboratory of the Johns Hopkins University, Laurel, Md. </p><p>For more information about the Cassini-Huygens mission, visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a> and the instrument team's home page, <a href="http://sd-www.jhuapl.edu/CASSINI/index.html">http://sd-www.jhuapl.edu/CASSINI/index.html</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10246" onclick="window.open(this.href); return false;" title="Voir l'image PIA10246: Artist Concept of Rhea Rings sur le site de la NASA">Voir l'image PIA10246: Artist Concept of Rhea Rings sur le site de la NASA.</a></div>
PIA10246: Artist Concept of Rhea Rings
<h1>PIA10402: Pan's Gap</h1><div class="PIA10402" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Encke Gap in Saturn's A ring is maintained by the presence of the moon Pan, which shares the gap with several diffuse ringlets. The scalloped appearance in the inner (left side) edge of the gap results from perturbations caused by Pan as it sweeps through the 325-kilometer (200-mile) wide lane.</p><p>This view looks toward the sunlit side of the rings from about 38 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 10, 2008. The view was acquired at a distance of approximately 264,000 kilometers (164,000 miles) from Saturn. Image scale is 1 kilometer (0.6 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/PIA10402" onclick="window.open(this.href); return false;" title="Voir l'image PIA10402: Pan's Gap sur le site de la NASA">Voir l'image PIA10402: Pan's Gap sur le site de la NASA.</a></div>
PIA10402: Pan's Gap
<h1>PIA10404: Structure Along the Edge</h1><div class="PIA10404" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft stares at the Huygens Gap— the region between Saturn's outer B ring and the ringlets of the prominent Cassini Division—in this high-resolution view.</p><p>Ring scientists think that the scrambled pattern seen here in the B ring's outer edge might represent gravitational clumping of particles there—that is, the self-gravity of groups of particles orbiting together makes them form clumps. This may be due to the fact that this region is compressed periodically, owing to perturbations by the moon Mimas. The outer B ring edge (at left) is, in fact, sculpted by an orbital resonance with Mimas.</p><p>The clumping feature may be due to the fact that this region is compressed periodically, owing to perturbations by Mimas.</p><p>This view looks toward the sunlit side of the rings from about 44 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 10, 2008. The view was acquired at a distance of approximately 270,000 kilometers (168,000 miles) from Saturn. Image scale is 1 kilometer (0.6 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/PIA10404" onclick="window.open(this.href); return false;" title="Voir l'image PIA10404: Structure Along the Edge sur le site de la NASA">Voir l'image PIA10404: Structure Along the Edge sur le site de la NASA.</a></div>
PIA10404: Structure Along the Edge
<h1>PIA10406: Stellar Horizon</h1><div class="PIA10406" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The nearest star system, the trinary star Alpha Centauri, hangs above the horizon of Saturn. Both Alpha Centauri A and B—stars very similar to our own—are clearly distinguishable in this image. (The third star in the Alpha Centauri system, the red dwarf Proxima Centauri, is not visible here.)</p><p>From the orbit of Saturn, light (as well as Cassini's radio signal) takes a little more than an hour travel to Earth. The distance to Alpha Centauri is so great that light from these stars takes more than four years to reach our Solar System. Thus, although Saturn seems a distant frontier, the nearest star is almost 30,000 times farther away.</p><p>This image is part of a stellar occultation sequence, during which Cassini watches as a star (or stars) as it passes behind Saturn. Light from the stars is attenuated by the uppermost reaches of Saturn's gaseous envelope, revealing information about the structure and composition of the planet's atmosphere.</p><p>The view was captured from about 66 degrees above the ringplane and faces southward on Saturn. Ring shadows mask the planet's northern latitudes at bottom.</p><p>The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on May 17, 2008. The view was obtained at a distance of approximately 534,000 kilometers (332,000 miles) from Saturn. Image scale on Saturn is about 3 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/PIA10406" onclick="window.open(this.href); return false;" title="Voir l'image PIA10406: Stellar Horizon sur le site de la NASA">Voir l'image PIA10406: Stellar Horizon sur le site de la NASA.</a></div>
PIA10406: Stellar Horizon