Galerie de photos des anneaux de la planète Saturne

<h1>PIA08147: Edgy Atlas</h1><div class="PIA08147" lang="en" style="width:770px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft looks up from beneath the ringplane to spy Atlas hugging the outer edge of the A ring, above center.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 23, 2006, at a distance of approximately 1.1 million kilometers (700,000 miles) from Atlas (32 kilometers, or 20 miles across). The image scale is 7 kilometers (4 miles) per pixel on Atlas.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08147" onclick="window.open(this.href); return false;" title="Voir l'image PIA08147: Edgy Atlas sur le site de la NASA">Voir l'image PIA08147: Edgy Atlas sur le site de la NASA.</a></div>
PIA08147: Edgy Atlas
<h1>PIA08150: Enceladus Races Onward</h1><div class="PIA08150" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>As our robotic emissary to Saturn, the Cassini spacecraft is privileged to behold such fantastic sights as this pairing of two moons beyond the rings. The bright, narrow F ring is the outermost ring structure seen here.</p><p>In this scene, bright Enceladus (505 kilometers, or 314 miles across) begins to slip in front of more distant Dione (1,126 kilometers, or 700 miles across). Enceladus is closer to Saturn than Dione, and orbits the planet at greater velocity. Thus, the smaller moon eventually passed the larger one, as seen from the Cassini spacecraft, and continued on its way.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on March 3, 2006, using a filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers and at a distance of approximately 2.6 million kilometers (1.6 million miles) from Enceladus and 2.7 million kilometers (1.7 million miles) from Dione. The view was taken from a phase angle (Sun-moon-spacecraft angle) of 139 degrees; about the same angle with respect to both moons. Image scale is about 16 kilometers (10 miles) per pixel on Enceladus and Dione.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08150" onclick="window.open(this.href); return false;" title="Voir l'image PIA08150: Enceladus Races Onward sur le site de la NASA">Voir l'image PIA08150: Enceladus Races Onward sur le site de la NASA.</a></div>
PIA08150: Enceladus Races Onward
<h1>PIA08165: Frontier Worlds</h1><div class="PIA08165" lang="en" style="width:685px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The three very different moons seen here provide targets of great interest for planetary scientists studying the Saturn system. Captured here by Cassini, along with the rings, are Tethys at upper right, Enceladus below center and Janus at lower left.</p><p>Researchers study the orbital dance of Janus (181 kilometers, or 113 miles across) with Epimetheus, tectonics and cratering on Tethys (1,071 kilometers, or 665 miles across) and geyser activity on Enceladus (505 kilometers, or 314 miles across). And these are only a few of the wonders that await exploration in the realm of the ringed planet.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 16, 2006, at a distance of approximately 2.4 million kilometers (1.5 million miles) from Tethys, 1.9 million kilometers (1.2 million miles) from Enceladus and 2.2 million kilometers (1.4 million miles) from Janus. The image scale is 14 kilometers (9 miles) per pixel on Tethys, 11 kilometers (7 miles) per pixel on Enceladus and 13 kilometers (8 miles) per pixel on Epimetheus.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08165" onclick="window.open(this.href); return false;" title="Voir l'image PIA08165: Frontier Worlds sur le site de la NASA">Voir l'image PIA08165: Frontier Worlds sur le site de la NASA.</a></div>
PIA08165: Frontier Worlds
<h1>PIA08171: Is That a Moon?</h1><div class="PIA08171" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This splendid view offers a detailed look at the faint rings within the Cassini Division as well as a rare glimpse of the Keeler gap moon, Daphnis. The small, ring embedded moon is a bright unresolved speck above center, near the outer edge of the A ring.</p><p>Discovered in Cassini images in 2005, Daphnis is a mere 7 kilometers (4 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 20, 2006, at a distance of approximately 483,000 kilometers (300,000 miles) from Saturn. The image scale on the sky at the distance of Daphnis is about 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">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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08171" onclick="window.open(this.href); return false;" title="Voir l'image PIA08171: Is That a Moon? sur le site de la NASA">Voir l'image PIA08171: Is That a Moon? sur le site de la NASA.</a></div>
PIA08171: Is That a Moon?
<h1>PIA08175: Ring-Hugging Moons</h1><div class="PIA08175" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Epimetheus floats in the distance below center, showing only the barest hint of its irregular shape. Pandora hides herself in the ringplane, near upper right, appearing as little more than a bump.</p><p>This view is from just above the ringplane and shows features on the unlit side of Saturn's rings.</p><p>Epimetheus (116 kilometers, or 72 miles across) and Pandora (84 kilometers, or 52 miles across) hug the outer reaches of Saturn's main rings. Pandora orbits just outside the F ring, and Epimetheus jockeys for position with Janus, 10,000 kilometers beyond. Janus and Epimetheus recently swapped positions, and Janus will remain the innermost of the pair until 2010, when they will swap positions again.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 29, 2006, at a distance of approximately 3.3 million kilometers (2 million miles) from Saturn. The image scale is approximately 20 kilometers (12 miles) per pixel at the distance of Saturn.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08175" onclick="window.open(this.href); return false;" title="Voir l'image PIA08175: Ring-Hugging Moons sur le site de la NASA">Voir l'image PIA08175: Ring-Hugging Moons sur le site de la NASA.</a></div>
PIA08175: Ring-Hugging Moons
<h1>PIA08176: Saturn's Night Colors</h1><div class="PIA08176" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This rare color view of Saturn's night side shows how the rings dimly illuminate the southern hemisphere, giving it a dull golden glow. Part of the northern dark side is just visible at top -- the illumination it receives being far less than the south.</p><p>The unlit side of the rings is shown here. The portion of the rings closest to Cassini is within the dark shadow of Saturn; the bright distant portion is outside the planet's shadow.</p><p>A crescent Tethys (1,071 kilometers, or 665 miles across) appears below the rings at left.</p><p>Images taken using red, green and blue spectral filters were combined to create this color view. The images were taken with the Cassini spacecraft narrow-angle camera on April 2, 2006, at a distance of approximately 3.8 million kilometers (2.4 million miles) from Saturn and 3.5 kilometers (2.2 million miles) from Tethys. The image scale is about 23 kilometers (14 miles) per pixel on Saturn.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08176" onclick="window.open(this.href); return false;" title="Voir l'image PIA08176: Saturn's Night Colors sur le site de la NASA">Voir l'image PIA08176: Saturn's Night Colors sur le site de la NASA.</a></div>
PIA08176: Saturn's Night Colors
<h1>PIA08178: Epimetheus Falls Behind</h1><div class="PIA08178" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Janus and Epimetheus continue to separate, following their orbital swap in January 2006. Until 2010, Janus will remain the innermost of the pair, whose orbits around Saturn are separated by only about 50 kilometers (31 miles) on average.</p><p>Epimetheus (116 kilometers, or 72 miles across) appears just right of the bright A ring ansa, or edge, while Janus (181 kilometers, or 113 miles across) is seen near upper right. (See <a href="/catalog/PIA08170">PIA08170</a> for a closer view of these dancing moons.)</p><p>The faint F ring extends across the image; Janus appears directly between its near and far edges.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 16, 2006, at a distance of approximately 3.7 million kilometers (2.3 million miles) from Saturn. The image scale is 22 kilometers (14 miles) per pixel on Janus and Epimetheus.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08178" onclick="window.open(this.href); return false;" title="Voir l'image PIA08178: Epimetheus Falls Behind sur le site de la NASA">Voir l'image PIA08178: Epimetheus Falls Behind sur le site de la NASA.</a></div>
PIA08178: Epimetheus Falls Behind
<h1>PIA08192: So Close…</h1><div class="PIA08192" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's moons Janus and Prometheus look close enough to touch in this stunningly detailed view.</p><p>From just beneath the ringplane, Cassini stares at Janus (181 kilometers, or 113 miles across) on the near side of the rings and Prometheus (102 kilometers, or 63 miles across) on the far side. The image shows that Prometheus is more elongated than Janus.</p><p>The view takes in the Cassini Division (4,800 kilometers, or 2,980 miles wide), from its outer edge to about halfway across its width.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 29, 2006 at a distance of approximately 218,000 kilometers (135,000 miles) from Janus and 379,000 kilometers (236,000 miles) from Prometheus. Image scale is about 1 kilometer (0.6 mile) per pixel on Janus and 2 kilometers (1 mile) per pixel on Prometheus.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08192" onclick="window.open(this.href); return false;" title="Voir l'image PIA08192: So Close… sur le site de la NASA">Voir l'image PIA08192: So Close… sur le site de la NASA.</a></div>
PIA08192: So Close…
<h1>PIA08193: Arc and Crescent</h1><div class="PIA08193" lang="en" style="width:651px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini finds artistic harmony in the dark and icy realm of Saturn. The view shows the crescent of Tethys (1,071 kilometers, or 665 miles across) and the outer edge of Saturn's main rings.</p><p>The dim, unlit side of the rings is shown here. The narrow F ring appears bright when seen from angles near the plane of the rings. Saturn's shadow engulfs the rings along their near edge.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on April 29, 2006 at a distance of approximately 884,000 kilometers (549,000 miles) from Tethys. Image scale is 53 kilometers (33 miles) per pixel on Tethys.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08193" onclick="window.open(this.href); return false;" title="Voir l'image PIA08193: Arc and Crescent sur le site de la NASA">Voir l'image PIA08193: Arc and Crescent sur le site de la NASA.</a></div>
PIA08193: Arc and Crescent
<h1>PIA08194: Hiding a Moon</h1><div class="PIA08194" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The dim, unlit side of Saturn's rings hides a secret in this view. Shy Mimas (397 kilometers, or 247 miles across) can be seen peeking out from behind the rings below center.</p><p>The bright features in this scene, including the F ring along the rings' periphery, are regions where tiny, dust-sized particles scatter light toward the camera. This phenomenon is often seen at high phase angles -- that is, Sun-ring-spacecraft angles -- approaching 180 degrees.</p><p>The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on May 3, 2006 at a distance of approximately 2.2 million kilometers (1.4 million miles) from Mimas and phase angle of 161 degrees. Image scale is 13 kilometers (8 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08194" onclick="window.open(this.href); return false;" title="Voir l'image PIA08194: Hiding a Moon sur le site de la NASA">Voir l'image PIA08194: Hiding a Moon sur le site de la NASA.</a></div>
PIA08194: Hiding a Moon
<h1>PIA08195: Dark Side of Saturn's Moon</h1><div class="PIA08195" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini stares toward the night side of Saturn, seen here on the right, as the active icy moon Enceladus glides past. </p><p>The moon's now famous icy plumes spew out of the south polar region (see <a href="/catalog/PIA07758">PIA07758</a>), providing a fresh supply of material for Saturn's E ring.</p><p>Enceladus is 505 kilometers (314 miles) across. Saturn's shadow stretches over the rings above the crescent moon.</p><p>The image was acquired in visible light with the Cassini spacecraft narrow-angle camera on May 4, 2006 at a distance of approximately 2.1 million kilometers (1.3 million miles) from Enceladus and 2.3 million kilometers (1.5 million miles) from Saturn. The image was taken at a Sun-Enceladus-spacecraft, or phase, angle of 159 degrees. Image scale is 13 kilometers (8 miles) per pixel on Enceladus.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08195" onclick="window.open(this.href); return false;" title="Voir l'image PIA08195: Dark Side of Saturn's Moon sur le site de la NASA">Voir l'image PIA08195: Dark Side of Saturn's Moon sur le site de la NASA.</a></div>
PIA08195: Dark Side of Saturn's Moon
<h1>PIA08201: Saturn's Night Lights</h1><div class="PIA08201" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The dark side of the ringplane glows with scattered light, including the luminous F ring, which shines like a rope of brilliant neon. Below, Dione (1,126 kilometers, or 700 miles across) presents an exquisitely thin crescent.</p><p>The image was taken using a spectral filter sensitive to wavelengths of infrared light centered at 930 nanometers. The image was acquired with the Cassini spacecraft narrow-angle camera on May 3, 2006 at a distance of approximately 1.8 million kilometers (1.1 million miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 160 degrees. Image scale is 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08201" onclick="window.open(this.href); return false;" title="Voir l'image PIA08201: Saturn's Night Lights sur le site de la NASA">Voir l'image PIA08201: Saturn's Night Lights sur le site de la NASA.</a></div>
PIA08201: Saturn's Night Lights
<h1>PIA08215: Mimas Seeking Solitude</h1><div class="PIA08215" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini looked toward the night side of Saturn to spy the darkened orb of Mimas barely visible here near the center of the image hugging the planet's shadow. To the left of Mimas are several bright features in the faint D ring.</p><p>The innermost of Saturn's medium-sized icy moons, Mimas, is 397 kilometers (247 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 7, 2006 at a distance of approximately 3.9 million kilometers (2.4 million miles) from Mimas and 4 million kilometers (2.5 million miles) from Saturn. The Sun-Mimas-spacecraft, or phase, angle is 161 degrees. Image scale is 24 kilometers (15 miles) per pixel on Saturn.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08215" onclick="window.open(this.href); return false;" title="Voir l'image PIA08215: Mimas Seeking Solitude sur le site de la NASA">Voir l'image PIA08215: Mimas Seeking Solitude sur le site de la NASA.</a></div>
PIA08215: Mimas Seeking Solitude
<h1>PIA08216: The Moons are the Stars</h1><div class="PIA08216" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The real jewels of Saturn are arguably its stunning collection of icy moons. Seen here with the unlit side of the rings are Titan (5,150 kilometers, or 3,200 miles across at right), Tethys (1,071 kilometers, or 665 miles across at left) and Enceladus (505 kilometers, or 314 miles across at center) with its fountain-like geysers.</p><p>The faint, vertical banding in the image is due to "noise" in the spacecraft electronics. This noise is difficult to remove from an image that has a very wide dynamic range -- i.e., a wide range of brightness levels -- as in the difference between gleaming Titan and the faint plumes of Enceladus.</p><p>Additionally, a reflection of Titan's light within the camera optics is likely responsible for the faint secondary image of Titan's limb to the left of the giant moon.</p><p>The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on June 10, 2006 at a distance of approximately 3.9 million kilometers (2.4 million miles) from Enceladus, 5.3 million kilometers (3.3 million miles) from Titan and 4.4 million kilometers (2.7 million miles) from Tethys. The Sun-Enceladus-spacecraft, or phase, angle is 160 degrees on Enceladus. Image scale is 23 kilometers (14 miles) per pixel on Enceladus, 32 kilometers (20 miles) per pixel on Titan and 26 kilometers (16 miles) per pixel on Tethys.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08216" onclick="window.open(this.href); return false;" title="Voir l'image PIA08216: The Moons are the Stars sur le site de la NASA">Voir l'image PIA08216: The Moons are the Stars sur le site de la NASA.</a></div>
PIA08216: The Moons are the Stars
<h1>PIA08217: Softly Glowing Scene</h1><div class="PIA08217" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Enceladus blasts its icy spray into space in this unlit-side ring view that also features a tiny sliver of Rhea.</p><p>The south polar region of Rhea (1,528 kilometers, or 949 miles across) peeks out from beneath the rings to the right of Enceladus (505 kilometers, or 314 miles across).</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 9, 2006 at a distance of approximately 3.9 million kilometers (2.4 million miles) from Enceladus and 4.6 million kilometers (2.9 million miles) from Rhea. The Sun-Enceladus-spacecraft, or phase, angle is 161 degrees. Image scale is 23 kilometers (14 miles) per pixel on Enceladus.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08217" onclick="window.open(this.href); return false;" title="Voir l'image PIA08217: Softly Glowing Scene sur le site de la NASA">Voir l'image PIA08217: Softly Glowing Scene sur le site de la NASA.</a></div>
PIA08217: Softly Glowing Scene
<h1>PIA08218: A Captivating Vision</h1><div class="PIA08218" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini captured this arresting view of Saturn just before Epimetheus crossed into the blinding glare of the planet's sunlit crescent and was lost.</p><p>As it orbits Saturn, Epimetheus (116 kilometers, or 72 miles across) hugs the outside edge of the narrow F ring, beyond the orbit of Pandora. The F ring is the brightest ring feature seen here. Saturn's southern hemisphere is softly lit by sunlight reflected off the rings.</p><p>A less obvious feature in this view is the planet's shadow, which begins to darken the inner regions of the rings at left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 9, 2006 at a distance of approximately 4 million kilometers (2.5 million miles) from Epimetheus and 4.1 million kilometers (2.5 million miles) from Saturn. The Sun-Epimetheus-spacecraft, or phase, angle is 161 degrees. Image scale is 25 kilometers (16 miles) per pixel on Saturn.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08218" onclick="window.open(this.href); return false;" title="Voir l'image PIA08218: A Captivating Vision sur le site de la NASA">Voir l'image PIA08218: A Captivating Vision sur le site de la NASA.</a></div>
PIA08218: A Captivating Vision
<h1>PIA08220: Light from Many Paths</h1><div class="PIA08220" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The unlit side of the rings glows with scattered sunlight as two moons circle giant Saturn. The light reaching Cassini in this view has traveled many paths before being captured.</p><p>At left, Mimas (397 kilometers, or 247 miles across) presents its dark side. Enceladus (505 kilometers, or 314 miles across), on the far side of the rings, is lit by "Saturnshine," or reflected sunlight coming from the planet. Saturn, in turn, is faintly lit in the south by light reflecting off the rings.</p><p>Saturn's shadow darkens the rings, tapering off toward the left side of this view.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 11, 2006 at a distance of approximately 3.9 million kilometers (2.5 million miles) from Mimas, 4.3 kilometers (2.7 millionmiles) from Enceladus and 4.1 million kilometers (2.6 million miles) from Saturn. Image scale is 25 kilometers (16 million miles) per pixel on Saturn.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08220" onclick="window.open(this.href); return false;" title="Voir l'image PIA08220: Light from Many Paths sur le site de la NASA">Voir l'image PIA08220: Light from Many Paths sur le site de la NASA.</a></div>
PIA08220: Light from Many Paths
<h1>PIA08222: Mimas in Hiding</h1><div class="PIA08222" lang="en" style="width:748px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Four minutes after Cassini captured dark Mimas and softly-lit Enceladus (see <a href="/catalog/PIA08220">PIA08220</a>) near the ringplane, Mimas had slipped into near-obscurity against Saturn's dark side.</p><p>Mimas (397 kilometers, or 247 miles across) is still visible as a dark spot just right of the planet's limb, leaving Enceladus (505 kilometers, or 314 miles across) to bask in the ghostly light of Saturn.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 11, 2006 at a distance of approximately 3.9 million kilometers (2.5 million miles) from Mimas, 4.3 kilometers (2.7 miles) from Enceladus, and 4.1 million kilometers (2.6 miles) from Saturn. Image scale is 25 kilometers (16 miles) per pixel on Saturn.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08222" onclick="window.open(this.href); return false;" title="Voir l'image PIA08222: Mimas in Hiding sur le site de la NASA">Voir l'image PIA08222: Mimas in Hiding sur le site de la NASA.</a></div>
PIA08222: Mimas in Hiding
<h1>PIA08223: Land of Darkness</h1><div class="PIA08223" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The narrow and twisted F ring lights up this scene, which features Mimas against the unlit side of Saturn's ringplane. The F ring contains a great deal of fine, icy particles that are quite effective at scattering sunlight at high phase angles.</p><p>Mimas (397 kilometers, or 247 miles across) is seen as a mere crescent in the center of this haunting view.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 13, 2006 at a distance of approximately 3.9 million kilometers (2.4 million miles) from Mimas and at a Sun-Mimas-spacecraft, or phase, angle of 156 degrees. Image scale is 23 kilometers (15 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08223" onclick="window.open(this.href); return false;" title="Voir l'image PIA08223: Land of Darkness sur le site de la NASA">Voir l'image PIA08223: Land of Darkness sur le site de la NASA.</a></div>
PIA08223: Land of Darkness
<h1>PIA08225: Darkened Moons, Searing F Ring</h1><div class="PIA08225" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two ring moons chase each other as their larger sibling looks on. This view shows Tethys at lower left, along with perpetually mingling Epimetheus at left of center, and Janus at center.</p><p>Tethys is 1,071 kilometers (665 miles) across; Epimetheus is 116 kilometers (72 miles) across; and Janus is 181 kilometers (113 miles) across.</p><p>In the background, the faint G ring and brilliant F ring bound the location where Cassini entered Saturn orbit. The spacecraft passed between these two rings upon arrival in mid-2004.</p><p>Near the right side of the image, a couple of ringlets within the Encke gap glow faintly.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 15, 2006 at a distance of approximately 3.9 million kilometers (2.4 million miles) from Janus, 4 million kilometers (2.5 million miles) from Epimetheus, and 3.7 million kilometers (2.3 million miles) from Tethys. Image scale is 24 kilometers (15 miles) per pixel on Janus and Epimetheus and 22 kilometers (14 miles) per pixel on Tethys.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08225" onclick="window.open(this.href); return false;" title="Voir l'image PIA08225: Darkened Moons, Searing F Ring sur le site de la NASA">Voir l'image PIA08225: Darkened Moons, Searing F Ring sur le site de la NASA.</a></div>
PIA08225: Darkened Moons, Searing F Ring
<h1>PIA08228: Night Lights</h1><div class="PIA08228" 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 across the unlit ringplane as Mimas glides silently in front of Dione.</p><p>It is often difficult to tell from two-dimensional views like this where the moons are in relation to each other and Cassini. In this instance, Mimas (397 kilometers, or 247 miles across) is on the side of Saturn closest to Cassini and Dione (1,126 kilometers, or 700 miles across) is on the far side of the planet.</p><p>Dione's night side is dimly lit by reflected light from Saturn. Much of the planet's sunlit side would be visible from the dark terrain seen here on Dione.</p><p>Saturn's shadow stretches across the rings at the bottom of the image.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 3, 2006 at a distance of approximately 1.6 million kilometers (1 million miles) from Mimas and 2.2 million kilometers (1.4 million miles) from Dione. The view was obtained at a Sun-moon-spacecraft, or phase, angle of about 146 degrees relative to both moons. Image scale is 10 kilometers (6 miles) per pixel on Mimas and 13 kilometers (8 miles) on Dione.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08228" onclick="window.open(this.href); return false;" title="Voir l'image PIA08228: Night Lights sur le site de la NASA">Voir l'image PIA08228: Night Lights sur le site de la NASA.</a></div>
PIA08228: Night Lights
<h1>PIA08235: Candle in the Dark</h1><div class="PIA08235" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's rings cut across an eerie scene that is ruled by Titan's luminous crescent and globe-encircling haze, broken by the small moon Enceladus, whose icy jets are dimly visible at its south pole. North is up.</p><p>The scattered light around planet-sized Titan (5,150 kilometers, or 3,200 miles across) makes the moon's solid surface visible in silhouette. Enceladus (505 kilometers, or 314 miles across) enjoys far clearer skies than its giant sibling moon.</p><p>This view shows the unlit side of Saturn's rings.</p><p>The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on June 10, 2006 at a distance of approximately 3.9 million kilometers (2.4 million miles) from Enceladus and 5.3 million kilometers (3.3 million miles) from Titan. The view was obtained at a Sun-moon-spacecraft, or phase, angle of about 160 degrees relative to both moons. Image scale is 23 kilometers (15 miles) per pixel on Enceladus and 32 kilometers (20 miles) on Titan.</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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08235" onclick="window.open(this.href); return false;" title="Voir l'image PIA08235: Candle in the Dark sur le site de la NASA">Voir l'image PIA08235: Candle in the Dark sur le site de la NASA.</a></div>
PIA08235: Candle in the Dark
<h1>PIA08241: Azimuthal Variability</h1><div class="PIA08241" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This close-up view of the inner A ring shows intriguing variations in brightness along the direction of ring motion -- from top to bottom. Close examination reveals dark regions that appear to widen and then narrow, and thin bright regions that disappear altogether. </p><p>Variations in brightness are to be expected in the direction of increasing orbital distance from Saturn, but variations along the azimuthal (or circumferential) direction are unusual, as they should be smoothed out quickly by ring particle motion. </p><p>(The faint "doughnut" left of center and the dark area in the lower right corner are imaging artifacts.)</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 23, 2006 at a distance of approximately 285,000 kilometers (177,000 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">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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08241" onclick="window.open(this.href); return false;" title="Voir l'image PIA08241: Azimuthal Variability sur le site de la NASA">Voir l'image PIA08241: Azimuthal Variability sur le site de la NASA.</a></div>
PIA08241: Azimuthal Variability
<h1>PIA08243: The Huygens Gap</h1><div class="PIA08243" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The sharp outer boundary of Saturn's B ring, which is the bright ring region seen to the right in this image, is maintained by a strong resonance with the moon Mimas. For every two orbits made by particles at this distance from Saturn, Mimas makes one orbit. The moon's repeated gravitational tugs force ring particles away from this region.</p><p>The dark region is called the Huygens gap and it includes the bright, eccentric Huygens ringlet, also visible here near center.</p><p>See <a href="/catalog/PIA06535">PIA06535</a> for a wide-field view of this region.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 23, 2006. The view was obtained from 15 degrees beneath the ringplane and at a distance of approximately 282,000 kilometers (175,000 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">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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08243" onclick="window.open(this.href); return false;" title="Voir l'image PIA08243: The Huygens Gap sur le site de la NASA">Voir l'image PIA08243: The Huygens Gap sur le site de la NASA.</a></div>
PIA08243: The Huygens Gap
<h1>PIA08244: Janus Hides in Plain Sight</h1><div class="PIA08244" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Tiny, dust-sized particles in Saturn's rings become much easier to see at high phase angle -- the angle formed by the Sun, the rings and the spacecraft. The brightest ring is the F ring; the next feature to the left is the outer edge of the A ring. Inward of that, and very bright, are the ringlets in the Encke gap.</p><p>Epimetheus (116 kilometers, or 72 miles across) is easy to spot just right of the outer F ring edge. Janus (181 kilometers, or 113 miles across), however, is quite a bit harder to make out; it is the dark spot located directly to the left of Epimetheus, above the gap between the A and F rings.</p><p>Within the space between the A and F rings there are two faint rings seen previously by the Cassini spacecraft. The inner faint ring (called R/2004 S1) coincides with the orbit of Atlas. The outer one forms the inner boundary of the orbit of Prometheus.</p><p>The narrow G ring is visible above and below the bright F ring.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 15, 2006 at a distance of approximately 2.7 million kilometers (1.7 million miles) from Epimetheus and 2.8 million kilometers (1.7 million miles) from Janus. The view was acquired at a Sun-Epimetheus-spacecraft, or phase, angle of 164 degrees. Image scale is 16 kilometers (10 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08244" onclick="window.open(this.href); return false;" title="Voir l'image PIA08244: Janus Hides in Plain Sight sur le site de la NASA">Voir l'image PIA08244: Janus Hides in Plain Sight sur le site de la NASA.</a></div>
PIA08244: Janus Hides in Plain Sight
<h1>PIA08245: Inner C Ring</h1><div class="PIA08245" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Bright ringlets and dark gaps at the inner edge of the C ring sweep across this scene. The C ring contains numerous "plateaus" -- broad ring regions that are bright and surrounded by fainter material. </p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 23, 2006. The view was captured from 14 degrees below the ring plane and at a distance of approximately 272,000 kilometers (169,000 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">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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08245" onclick="window.open(this.href); return false;" title="Voir l'image PIA08245: Inner C Ring sur le site de la NASA">Voir l'image PIA08245: Inner C Ring sur le site de la NASA.</a></div>
PIA08245: Inner C Ring
<h1>PIA08247: Opposition Surge on the A Ring</h1><div class="PIA08247" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two images of Saturn's A and B ring showcase the opposition effect, a brightness surge that is visible on Saturn's rings when the Sun is directly behind the spacecraft. </p><p>This view is of the A ring. See <a href="/catalog/PIA08248">PIA08248</a> for the view of the B ring.</p><p>The opposition effect exists because of two contributing factors. One is due to the fact that the shadows of ring particles directly opposite the Sun from Cassini -- the region of opposition -- fall completely behind the particles as seen from the spacecraft. These shadows are thus not visible to the spacecraft: all ring particle surfaces visible to the spacecraft in these two images are in sunlight and therefore bright. Much farther away from the region of opposition, the ring particle shadows become more visible and the scene becomes less bright. The brightness falls off in a circular fashion around the opposition point. The main factor to the opposition surge in this image is an optical phenomenon called "coherent backscatter." Here, the electromagnetic signal from the rays of scattered sunlight making its way back to the spacecraft is enhanced near the region of opposition because, instead of canceling, the electric and magnetic fields comprising the scattered radiation fluctuate in unison.</p><p>The images were taken in visible light with the Cassini spacecraft wide-angle camera on July 23, 2006 at a distance of approximately 262,000 kilometers (163,000 miles) from Saturn. Image scale in the radial, or outward from Saturn, direction is 13 kilometers (8 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08247" onclick="window.open(this.href); return false;" title="Voir l'image PIA08247: Opposition Surge on the A Ring sur le site de la NASA">Voir l'image PIA08247: Opposition Surge on the A Ring sur le site de la NASA.</a></div>
PIA08247: Opposition Surge on the A Ring
<h1>PIA08248: Opposition Surge on the B Ring</h1><div class="PIA08248" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two images of Saturn's A and B ring showcase the opposition effect, a brightness surge that is visible on Saturn's rings when the Sun is directly behind the spacecraft. </p><p>This view is of the B ring. See <a href="/catalog/PIA08247">PIA08247</a> for the view of the A ring.</p><p>The opposition effect exists because of two contributing factors. One is due to the fact that the shadows of ring particles directly opposite the Sun from Cassini -- the region of opposition -- fall completely behind the particles as seen from the spacecraft. These shadows are thus not visible to the spacecraft: all ring particle surfaces visible to the spacecraft in these two images are in sunlight and therefore bright. Much farther away from the region of opposition, the ring particle shadows become more visible and the scene becomes less bright. The brightness falls off in a circular fashion around the opposition point. The main factor to the opposition surge in this image is an optical phenomenon called "coherent backscatter." Here, the electromagnetic signal from the rays of scattered sunlight making its way back to the spacecraft is enhanced near the region of opposition because, instead of canceling, the electric and magnetic fields comprising the scattered radiation fluctuate in unison.</p><p>The images were taken in visible light with the Cassini spacecraft wide-angle camera on July 23, 2006 at a distance of approximately 262,000 kilometers (163,000 miles) from Saturn. Image scale in the radial, or outward from Saturn, direction is 13 kilometers (8 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08248" onclick="window.open(this.href); return false;" title="Voir l'image PIA08248: Opposition Surge on the B Ring sur le site de la NASA">Voir l'image PIA08248: Opposition Surge on the B Ring sur le site de la NASA.</a></div>
PIA08248: Opposition Surge on the B Ring
<h1>PIA08250: Seeing the Difference</h1><div class="PIA08250" lang="en" style="width:772px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>With Saturn's terminator as a backdrop, this view of the unlit face of the rings makes it easy to distinguish between areas that are actual gaps, where light passes through essentially unimpeded, and areas where the rings block or scatter light. The gaps are regions in which the brightness varies strongly from left to right as the background goes from bright to dark. </p><p>Parts of the image are saturated at left.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on July 24, 2006 at a distance of approximately 577,000 kilometers (359,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 101 degrees. Image scale is 31 kilometers (19 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08250" onclick="window.open(this.href); return false;" title="Voir l'image PIA08250: Seeing the Difference sur le site de la NASA">Voir l'image PIA08250: Seeing the Difference sur le site de la NASA.</a></div>
PIA08250: Seeing the Difference
<h1>PIA08252: Night on Saturn</h1><div class="PIA08252" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The night skies of Saturn are graced by the planet's dazzling rings, but as this image shows, one's view could be very different depending on the season and from which hemisphere one gazes up.</p><p>This point of view shows that the southern hemisphere is much brighter on the planet's night side than the northern hemisphere, owing to the brilliance of sunlight reflecting off the southern illuminated rings. The northern hemisphere sees only the ghostly glow of the dim scattered light that manages to penetrate the rings.</p><p>The planet's shadow eclipses the rings themselves in the lower half of this scene, but close inspection shows ringlets in the C ring silhouetted against the southern latitudes.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on July 25, 2006 at a distance of approximately 952,000 kilometers (592,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 124 degrees. Image scale is 53 kilometers (33 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08252" onclick="window.open(this.href); return false;" title="Voir l'image PIA08252: Night on Saturn sur le site de la NASA">Voir l'image PIA08252: Night on Saturn sur le site de la NASA.</a></div>
PIA08252: Night on Saturn