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Galerie de photos d'Encelade, satellite de la planète Saturne

<h1>PIA00347:  Voyager 2 Color Image of Enceladus, Almost Full Disk</h1><div class="PIA00347" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This color Voyager 2 image mosaic shows the water-ice-covered surface of Enceladus, one of Saturn's icy moons. Enceladus' diameter of just 500 km would fit across the state of Arizona, yet despite its small size Enceladus exhibits one of the most interesting surfaces of all the icy satellites. Enceladus reflects about 90% of the incident sunlight (about like fresh-fallen snow), placing it among the most reflective objects in the Solar System. Several geologic terrains have superposed crater densities that span a factor of at least 500, thereby indicating huge differences in the ages of these terrains. It is possible that the high reflectivity of Enceladus' surface results from continuous deposition of icy particles from Saturn's E-ring, which in fact may originate from icy volcanoes on Enceladus' surface. Some terrains are dominated by sinuous mountain ridges from 1 to 2 km high (3300 to 6600 feet), whereas other terrains are scarred by linear cracks, some of which show evidence for possible sideways fault motion such as that of California's infamous San Andreas fault. Some terrains appear to have formed by separation of icy plates along cracks, and other terrains are exceedingly smooth at the resolution of this image. The implication carried by Enceladus' surface is that this tiny ice ball has been geologically active and perhaps partially liquid in its interior for much of its history. The heat engine that powers geologic activity here is thought to be elastic deformation caused by tides induced by Enceladus' orbital motion around Saturn and the motion of another moon, Dione.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA00347" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA00347:  Voyager 2 Color Image of Enceladus, Almost Full Disk	  sur le site de la NASA">Voir l'image 	 PIA00347:  Voyager 2 Color Image of Enceladus, Almost Full Disk	  sur le site de la NASA.</a></div>
PIA00347: Voyager 2 Color Image of Enceladus, Almost Full Disk
<h1>PIA01367:  The Saturnian moon Enceladus</h1><div class="PIA01367" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This high-resolution image of Enceladus was made from several images obtained Aug. 25, 1981, by Voyager 2 from a range of 119,000 kilometers (74,000 miles). It shows further surface detail on this Saturnian moon. Enceladus is seen to resemble Jupiter's moon Ganymede, which is, however, about 10 times larger. Faintly visible here in light reflected from Saturn is the hemisphere turned away from the sun. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01367" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA01367:  The Saturnian moon Enceladus	  sur le site de la NASA">Voir l'image 	 PIA01367:  The Saturnian moon Enceladus	  sur le site de la NASA.</a></div>
PIA01367: The Saturnian moon Enceladus
<h1>PIA01394:  Saturn - Enceladus from a distance of 119,000 kilometers (74,000 miles)</h1><div class="PIA01394" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This Voyager 2 mosaic of Enceladus was made from images taken through the clear, violet and green filters Aug. 25, 1981, from a distance of 119,000 kilometers (74,000 miles). In many ways, the surface of this satellite of Saturn resembles that of Jupiter's Galilean satellite Ganymede. Enceladus, however, is only one-tenth Ganymede's size. Some regions of Enceladus show impact craters up to 35 kilometers (22 miles) in diameter, whereas other areas are smooth and uncratered. Linear sets of grooves tens of kilometers long traverse the surface and are probably faults resulting from deformation of the crust. The uncratered regions are geologically young and suggest that Enceladus has experienced a period of relatively recent internal melting. The rims of several craters near the lower center of the picture have been flooded by the smooth terrain. The satellite is about 500 kilometers (310 miles) in diameter and has the brightest and whitest surface of any of Saturn's satellites. Features as small as 2 kilometers (1.2 miles) are visible in this highest-resolution view of Enceladus. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01394" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA01394:  Saturn - Enceladus from a distance of 119,000 kilometers (74,000 miles)	  sur le site de la NASA">Voir l'image 	 PIA01394:  Saturn - Enceladus from a distance of 119,000 kilometers (74,000 miles)	  sur le site de la NASA.</a></div>
PIA01394: Saturn - Enceladus from a distance of 119,000 kilometers (74,000 miles)
<h1>PIA01395:  Saturn - high-resolution filtered image of Enceladus</h1><div class="PIA01395" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This high-resolution filtered image of Enceladus was made from several images obtained Aug. 25 by Voyager 2 from a range of 119,000 kilometers (74,000 miles). It shows further surface detail on this Saturnian moon (also viewed in the accompanying release P-23955C/BW, S-2-50, imaged about the same time). Enceladus is seen to resemble Jupiter's Galilean satellite Ganymede, which is, however, about 10 times larger. Faintly visible here in "Saturnshine" is the hemisphere turned away from the sun. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01395" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA01395:  Saturn - high-resolution filtered image of Enceladus	  sur le site de la NASA">Voir l'image 	 PIA01395:  Saturn - high-resolution filtered image of Enceladus	  sur le site de la NASA.</a></div>
PIA01395: Saturn - high-resolution filtered image of Enceladus
<h1>PIA01950:  Surface of Enceladus</h1><div class="PIA01950" lang="en" style="width:450px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">The surface of Enceladus is seen in this closeup view obtained Aug. 25, when Voyager 2 was 112,000 kilometers (69,500 miles) from this satellite of Saturn. This view, in which Enceladus north pole is toward the bottom right, shows the moon to bear a striking resemblance of Ganymede, the largest Galilean satellite of Jupiter. Moderately cratered areas have been transected by strips of younger grooved terrain. This more recently formed terrain--the light cratering says it must be relatively young--has consumed portions of craters such as those near the bottom center of this picture. This suggests that Enceladus has experienced internal melting even though it is only about 490 km. (300 mi.) in diameter. The grooves and linear features indicate that the satellite has been subjected to considerable crustal deformation as a result of this internal melting. The largest crater visible here is about 35 km. (20 mi.) across. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01950" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA01950:  Surface of Enceladus	  sur le site de la NASA">Voir l'image 	 PIA01950:  Surface of Enceladus	  sur le site de la NASA.</a></div>
PIA01950: Surface of Enceladus
<h1>PIA05422:  Icy Enceladus</h1><div class="PIA05422" lang="en" style="width:300px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's brilliant jewel, water-ice-covered Enceladus, is the most reflective body in the solar system. </p><p>Reflecting greater than 90 percent of the incidental sunlight, this moon was the source of much surprise during the Voyager era. Enceladus (pronounced "en-SELL-uh-duss"), exhibits both smooth and lightly cratered terrains that are crisscrossed here and there by linear, groove-like features. It also has characteristics similar to those of Jupiter's moons, Ganymede and Europa, making it one of Saturn's most enigmatic moons. </p><p>Cassini will investigate its rich geologic record in a series of four planned close flybys. The first flyby is scheduled for Feb. 17, 2005. </p><p>The image was taken in visible light with the Cassini spacecraft narrow angle camera on July 3, 2004, from a distance of 1.6 million kilometers (990,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase angle of about 103 degrees. The image scale is 10 kilometers (6 miles) per pixel. Enceladus is roughly 499 kilometers (310 miles) across. The image has not been magnified.</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 Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA05422" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA05422:  Icy Enceladus	  sur le site de la NASA">Voir l'image 	 PIA05422:  Icy Enceladus	  sur le site de la NASA.</a></div>
PIA05422: Icy Enceladus
<h1>PIA06187:  False Color Look at Enceladus</h1><div class="PIA06187" lang="en" style="width:677px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A fresh look at Saturn's moon Enceladus reveals tempting new details about the brightest real estate in the solar system. This false-color image shows that some of the linear features on Enceladus have a slightly different color from their surroundings. Different colors of ice may be caused by varying compositions or varying ice crystal sizes. Either of which can indicate different formation mechanisms or different ages. Enceladus is 505 kilometers (314 miles) across.</p><p>The new view shows some of the smooth plains noted in NASA's Voyager spacecraft images and earlier Cassini images. At about the seven o'clock position are interwoven linear patterns that are reminiscent of the wispy-terrain features on two of Saturn's other moons, Dione and Rhea.</p><p>Imaging scientists are not sure whether these brighter markings are evidence for contamination of the ice in the linear features by some other material. Analysis of high resolution images of Enceladus should also show whether, like the surprising terrain seen on Dione, the "wisps" are curvilinear fractures that are not quite resolved at this scale.</p><p>This false color view combines images obtained using filters sensitive to ultraviolet, polarized green and infrared light. The images were obtained with the Cassini spacecraft narrow angle camera on Feb. 16, 2005, at distances ranging from 179,727 to 179,601 kilometers (111,677 to 111,599 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 22 degrees. Resolution in the image is about 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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06187" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06187:  False Color Look at Enceladus	  sur le site de la NASA">Voir l'image 	 PIA06187:  False Color Look at Enceladus	  sur le site de la NASA.</a></div>
PIA06187: False Color Look at Enceladus
<h1>PIA06188:  Seeing Enceladus' Faults</h1><div class="PIA06188" lang="en" style="width:564px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This high-resolution image from Cassini shows a region of "smooth plains" terrain on the surface of Saturn's moon Enceladus, located slightly north of the equator on the moon's Saturn-facing hemisphere. The area is 70 kilometer by 84 kilometer (43 mile by 52 miles).</p><p>The image shows a variety of tectonic features that attest to Enceladus' dynamic geological history. At the top of the image is a relatively fresh-looking crevasse system with individual fractures more than a kilometer wide. The crevasse system cross-cuts a complex northeast-to-southwest-trending system of older faults. A 12-kilometer-wide (7-mile-wide) band of crudely aligned, chevron-shaped features runs down the center of the image.</p><p>Among the most intriguing features in this view are a series of dark, small spots, 125 to 750 meters (400 to 2,500 feet) in diameter. The dark spots often seem to be aligned in chains parallel to narrow fractures. The contrast of the dark features with the surrounding bright terrain suggests that they may be compositionally distinct, but their origin is a new mystery.</p><p>The orientation of the image is such that north is approximately 30 degrees clockwise from the bottom of the frame. Enceladus is 505 kilometers (314 miles) in diameter.</p><p>The image was taken in visible light with the Cassini spacecraft narrow angle camera on Feb. 17, 2005, at a distance of 21,208 kilometers (13,178 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 27 degrees. Pixel scale in the image is 125 meters (410 feet) per pixel. The image has been contrast-enhanced to aid visibility.</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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06188" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06188:  Seeing Enceladus' Faults	  sur le site de la NASA">Voir l'image 	 PIA06188:  Seeing Enceladus' Faults	  sur le site de la NASA.</a></div>
PIA06188: Seeing Enceladus' Faults
<h1>PIA06189:  Cassini Views Enceladus in Stereo</h1><div class="PIA06189" lang="en" style="width:774px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini narrow angle camera took images of the ropy, taffy-like topography of Saturn's moon Enceladus from many different angles as the spacecraft flew by on Feb. 17, 2005. Images from different directions allow construction of stereo views such as this, which are helpful in interpreting the complex topography.</p><p>This view of an area about 60 kilometers (37 miles) across shows several different kinds of ridge-and-trough topography, indicative of a variety of horizontal forces near the surface of this 505-kilometer (314-mile) diameter satellite.</p><p>Several different kinds of deformation are visible, and a small population of impact craters shows that this is some of the younger terrain on Enceladus. Sunlight illuminates the scene from the bottom.</p><p>Interestingly, the topographic relief is only about one kilometer, which is quite low for a small, low-gravity satellite. However, this is consistent with other evidence that points to interior melting and resurfacing in Enceladus' history.</p><p>The images for this anaglyph were taken in visible light with the narrow angle camera, from distances ranging from 10,750 kilometers (6,680 miles, red image) to 24,861 kilometers (15,448 miles, blue image) from Enceladus, and at Sun-Enceladus-spacecraft, or phase, angles from 32 to 27 degrees. Pixel scale in the red image is 60 meters (197 feet) per pixel; scale in the blue image is 150 meters (492 feet) per pixel. The images have been contrast-enhanced to aid visibility.</p><p>A separate, non-stereo version of the scene, showing only the red image is also available (see <a href="/catalog/PIA06190">PIA06190</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 and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06189" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06189:  Cassini Views Enceladus in Stereo	  sur le site de la NASA">Voir l'image 	 PIA06189:  Cassini Views Enceladus in Stereo	  sur le site de la NASA.</a></div>
PIA06189: Cassini Views Enceladus in Stereo
<h1>PIA06190:  Cassini Views Enceladus Up-Close</h1><div class="PIA06190" lang="en" style="width:775px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini took this image of the ropy, taffy-like topography on Saturn's moon Enceladus as it soared above the icy moon on Feb. 17, 2005.</p><p>This view, about 60 kilometers across (37 miles), shows several different kinds of ridge-and-trough topography, indicative of a variety of horizontal forces near the surface of this 505-kilometer (314-mile) diameter satellite.</p><p>Several different kinds of deformation are visible, and a small population of impact craters shows that this is some of the younger terrain on Enceladus. Sunlight illuminates the scene from the bottom.</p><p>Interestingly, the topographic relief is only about one kilometer, which is quite low for a small, low gravity satellite. However, this is consistent with other evidence that points to interior melting and resurfacing in Enceladus' history.</p><p>This view was obtained in visible light with the Cassini spacecraft narrow angle camera, at a distance of 10,750 kilometers (6,680 miles) from Enceladus, and at Sun-Enceladus-spacecraft, or phase, angle of 32 degrees. Image scale is 60 meters (197 feet) per pixel. The image has been contrast-enhanced to aid visibility.</p><p>A stereo or 3-D version of this region on Enceladus is also available (see <a href="/catalog/PIA06189">PIA06189</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 and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06190" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06190:  Cassini Views Enceladus Up-Close	  sur le site de la NASA">Voir l'image 	 PIA06190:  Cassini Views Enceladus Up-Close	  sur le site de la NASA.</a></div>
PIA06190: Cassini Views Enceladus Up-Close
<h1>PIA06191:  Enceladus Mosaic</h1><div class="PIA06191" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA06191_fig1.jpg"></a><br>Figure 1: Originally Released Image</p><p>This spectacular view is a mosaic of four high resolution images taken by the Cassini spacecraft narrow angle camera on Feb. 16, 2005, during its close flyby of Saturn's moon Enceladus.</p><p>The view is about 300 kilometers (200 miles) across and shows the myriad of faults, fractures, folds, troughs and craters that make this Saturnian satellite especially intriguing to planetary scientists. More than 20 years ago, NASA's Voyager spacecraft gave hints of a surface cut by tectonic features, and subsequent images of other icy moons have revealed many different ways that stresses have acted on icy moon crusts.</p><p>The new close-up images of Enceladus, which has a diameter of 505 kilometers (314 miles), show some familiar-looking features and others that are brand new. The work required to unravel their origins, their formation sequence, and the implications for the evolution of icy solar system bodies is just beginning.</p><p>Voyager images of Enceladus, which were obtained at much poorer spatial resolution, showed terrains like those seen here. They were called "smooth plains" because they appeared to exhibit little topographic relief. However, Cassini has now viewed these terrains at almost 10 times better resolution. The new images reveal very complex systems of fractures, resurfaced terrain, and in some cases, topographic relief greater than several hundred meters. </p><p>Many styles of fracturing are evident in this mosaic. Extending downward from the top center of the mosaic for hundreds of kilometers is a broad belt of complex, interwoven fractures. A huge rift 5 kilometers (3 miles)-wide dissects this belt and extends into several older-looking, distinct regions or "cells" of terrain that themselves exhibit distinct fracture patterns.<p>Because Cassini flew rapidly past Enceladus, the right-side images were taken from a slightly different perspective than the left, and are delineated by the white box.</p><p>The mosaic covers longitudes from about 254 west to 296 west and latitudes from 60 south to the equator.</p><p>The images were taken in visible light on Feb. 17, 2005, at distances ranging from of 26,140 to 17,434 kilometers (16,243 to 10,833 miles) from Enceladus and at Sun-Enceladus-spacecraft, or phase, angles ranging from 27 to 29 degrees. Pixel scale in the left-side image is 150 meters (492 feet) per pixel; in the right-side (white box) image, scale is 105 meters (344 feet) per pixel. The image has been contrast-enhanced to aid visibility. </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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06191" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06191:  Enceladus Mosaic	  sur le site de la NASA">Voir l'image 	 PIA06191:  Enceladus Mosaic	  sur le site de la NASA.</a></div>
PIA06191: Enceladus Mosaic
<h1>PIA06206:  Moon with a Past</h1><div class="PIA06206" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The complex history of Enceladus' surface is revealed in great detail in this mosaic of images taken during Cassini's closest encounter with this intriguing icy moon. </p><p>Fractures are nearly ubiquitous in this terrain, cutting across each other and across impact craters. Scientists can use the relationships between different features to determine the order in which they formed, thereby unraveling the moon's past. For example, almost all the craters in this mosaic have fractures running through their rims and floors, indicating that the craters formed first. This means that Enceladus has been geologically active relatively recently, especially compared to some of its neighbors in the Saturn system.</p><p>There is an impressive variety of fractures visible here--from the wide east-west rifts near the upper left of the mosaic to the very fine north-south fractures in the center (which are approximately 100 to 400 meters, or 330 to 1,300 feet, across). Due to the complexity of this terrain, the task of unraveling Enceladus' history promises to be a worthy challenge for planetary scientists.</p><p>The images in this mosaic were taken on March 9, 2005, in visible green light with the Cassini spacecraft narrow-angle camera at distances ranging from approximately 13,000 to 5,200 kilometers (8,000 to 3,200 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle ranging from 44 to 38 degrees. Resolution in the original images ranges from about 80 to 30 meters (260 to 100 feet) 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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06206" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06206:  Moon with a Past	  sur le site de la NASA">Voir l'image 	 PIA06206:  Moon with a Past	  sur le site de la NASA.</a></div>
PIA06206: Moon with a Past
<h1>PIA06207:  Old and New Again</h1><div class="PIA06207" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This false-color Cassini mosaic of Saturn's moon Enceladus captures in a single view, much of the frigid moon's diverse geology.</p><p>Cratered terrain dominates most of the scene. The relatively dense accumulation of impact craters implies that this terrain is among the oldest on the moon's surface. Near the bottom of the picture is a crater 20 kilometers wide (12-mile) with a prominent dome-shaped structure in its center. The entire area is transected by a complex web of fractures and faults; some are as narrow as a few hundred meters, others as wide as 5 kilometers (3 miles).</p><p>The rims and interiors of many craters seem to be sliced by a pervasive system of narrow, parallel grooves into slabs or lanes that typically are a kilometer (about a half-mile) in width. The widely varied appearances of fractures in this region attest to the fact that the surface of Enceladus has been shaped by a long history of intense tectonic activity. The oldest fractures are characterized by a soft, muted appearance and are overprinted by numerous, superimposed impact craters. More recent fractures exhibit topographic relief that is relatively "crisp" in appearance, and they appear to slice through pre-existing impact craters and older fractures.</p><p>On the right side of the image is a conspicuous and twisted network of ridges and troughs forming a distinct tectonic region on Enceladus. The paucity of craters and the sharp appearance of the topography in this area indicate that this is a relatively young terrain on Enceladus.</p><p>This view is a composite of images taken using filters sensitive to ultraviolet (centered at 338 nanometers), green (centered at 568 nanometers), and near-infrared (centered at 930 nanometers) light, and has been processed to accentuate subtle color differences. The uppermost surface of these terrains has a relatively uniform grayish color in this picture, suggesting that it is covered with materials of homogeneous composition and grain size. However, many of the fractures reveal a distinctly different color (represented by pale-bluish tones in this false-color image) than the typical surface materials. These "colored" fractures seem to penetrate down to a material that is texturally or compositionally different than most of the material at the surface.</p><p>One possibility is that the walls of the fractures expose outcrops of solid ice, or ice with different grain-sizes compared to powdery surface materials that blanket flat-lying surfaces. It is also possible that the color identifies some compositional difference between buried ice and ice at the surface. The distinct coloration of "youthful" fracture walls are nearly absent in the oldest fractures. This is consistent with the possibility that the older fractures are covered with a drape of particulate material which mantles nearly all the oldest features on the satellite. </p><p>In the early 1980's, NASA's Voyager mission to the outer planets revealed a strikingly similar arrangement of terrains on Miranda, an icy moon of Uranus (see <a href="/catalog/PIA00141">PIA00141</a>). Miranda is 470-kilometers-wide (290 miles), nearly as large as Enceladus (504 kilometers, or 313 miles wide). The similarities in size and tectonic history on these objects may suggest that remarkably similar physical processes have controlled the separate geological evolutions of these bodies.</p><p>The images that comprise this mosaic were obtained during Cassini's closest approach to Enceladus on March 9, 2005. The images was taken in visible green light with the Cassini spacecraft narrow-angle camera at a distance of approximately 29,000 kilometers (18,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 46 degrees. Resolution in the original images is about 170 meters (560 feet) 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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06207" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06207:  Old and New Again	  sur le site de la NASA">Voir l'image 	 PIA06207:  Old and New Again	  sur le site de la NASA.</a></div>
PIA06207: Old and New Again
<h1>PIA06208:  Blue Clues</h1><div class="PIA06208" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>During its very close flyby on March 9, 2005, the Cassini spacecraft captured this false-color view of Saturn's moon Enceladus, which shows the wide variety of this icy moon's geology.</p><p>Some geological regions on Enceladus are old and retain large numbers of impact craters; younger areas exhibit many generations of tectonic troughs and ridges. Subtle differences in color may indicate different ice properties, such as grain sizes, that will help unravel the sequence of geologic events leading to the current strange landscape.</p><p>This false-color view is a composite of individual frames obtained using filters sensitive to green (centered at 568 nanometers) and infrared light (two infrared filters, centered at 752 and 930 nanometers respectively). The view has been processed to accentuate subtle color differences. The atmosphere of Saturn forms the background of this scene (its color has been rendered grey to allow the moon to stand out).</p><p>The Sun illuminates Enceladus from the left, leaving part of it in shadow and blocking out part of the view of Saturn. This view shows the anti-Saturn hemisphere, centered nearly on the equator. </p><p>The images comprising this view were taken with the Cassini spacecraft narrow-angle camera at a distance of approximately 94,000 kilometers (58,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 48 degrees. Resolution in the image is about 560 meters (1,800 feet) 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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06208" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06208:  Blue Clues	  sur le site de la NASA">Voir l'image 	 PIA06208:  Blue Clues	  sur le site de la NASA.</a></div>
PIA06208: Blue Clues
<h1>PIA06209:  Deep Color</h1><div class="PIA06209" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This false-color, close-up look at Saturn's moon Enceladus yields new insight into the different processes that have shaped the moon's icy surface.</p><p>Extending through the center of this image is a system of rifts 3 kilometers wide (2 mile) and lanes of grooved terrain 20 kilometers wide (12 mile), which separate two distinct geological provinces. To the right of the boundary is older, cratered terrain - a region peppered with craters ranging from 10 kilometers (6 miles) in diameter, down craters near the limit of resolution. The region is believed to be old because it has accumulated a relatively high density of impact craters over time and the topography is soft and muted, suggesting that it is covered by a layer of particulate materials. The cratered terrain is cut crosswise by numerous faults and fractures ranging in width from hundreds of meters to a few kilometers.</p><p>On the left side of the scene are grooved, icy plains. This broad, relatively flat region is scored by an extensive band of parallel grooves that appear to subdivide the surface into narrow lanes approximately 1 kilometer or half a mile wide. The low abundance of impact craters and crisp relief on topographic features here imply that this region is geologically much younger than the cratered terrain at the right.</p><p>This view is a composite of images taken using filters sensitive to ultraviolet (centered at 338 nanometers), green (centered at 568 nanometers), and near-infrared (centered at 930 nanometers) light, and has been processed to accentuate subtle color differences. </p><p>The uppermost surface of these terrains has a relatively uniform pinkish cast in this picture, suggesting that it is covered with materials of homogeneous composition and grain size. However, many of the fractures reveal a distinctly different color (represented by greenish tones in this false-color image) than the typical surface materials in this region. The fractures seem to penetrate down to a material that is texturally or compositionally different than most surface materials. One possibility is that the walls of the fractures expose outcrops of solid ice or ice with different grain-sizes compared to powdery surface materials that mantle flat-lying surfaces. It is also possible that the color identifies some compositional difference between buried ice and ice at the surface.</p><p>The scene is located on the side of Enceladus that faces away from Saturn. The images were obtained with the Cassini spacecraft narrow-angle camera when the spacecraft was at a distance of approximately 25,700 kilometers (15,969 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 46 degrees. Resolution in the image is about 150 meters (490 feet) 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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06209" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06209:  Deep Color	  sur le site de la NASA">Voir l'image 	 PIA06209:  Deep Color	  sur le site de la NASA.</a></div>
PIA06209: Deep Color
<h1>PIA06210:  Painting on the Walls</h1><div class="PIA06210" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>During its closest flyby of Saturn's wrinkled, icy moon Enceladus, Cassini obtained multi-spectral images of its cratered terrain that have been put together to create this false-color view.</p><p>To human eyes, Enceladus appears almost completely white, but false color reveals intriguing details. This view is a composite of images taken using filters sensitive to ultraviolet (centered at 338 nanometers), green (centered at 568 nanometers), and near-infrared (centered at 930 nanometers) light, and has been processed to accentuate subtle color differences. The uppermost surface of these terrains appears uniformly grey in this picture, suggesting that they are covered with materials of homogeneous composition and grain size. However, the walls of many of the fractures appear to be somewhat bluer than typical surface materials. It is possible that the difference in color identifies outcrops of solid ice on the walls of fractures, or ice with different grain-sizes, compared to powdery surface materials. It is also possible that the color identifies some compositional difference between buried ice and ice at the surface.</p><p>The surface is peppered with craters of all sizes, from the 21-kilometer (13-mile) diameter crater at the top of the image, down to tiny craters near the limit of resolution. The prominent crater at the top contains a central, domelike structure more than 11 kilometers (7 miles) in diameter. The dome, the crater--and indeed the entire scene--is sliced by a complex network of fractures ranging in width from hundreds of meters in some places, to over three kilometers (2 miles) in others.</p><p>The prominent, complex fracture in the bottom of the frame extends over 85 kilometers (53 miles) in length across the field of view. From Cassini's oblique vantage point, the walls of the large fracture are clearly visible. A pervasive network of narrow, parallel grooves can be seen in many places in the image, and they appear to slice the surface into parallel slabs of ice approximately 500 meters (1,600 feet) in thickness.</p><p>The image has been rotated so that north is at the top of the scene. The terrain in this scene is located on the side of Enceladus that faces away from Saturn, centered on latitude 28.7 north, longitude 192.5 west.</p><p>The image was taken during Cassini's closest-ever approach to Enceladus on March 9, 2005. It was taken with the Cassini spacecraft narrow-angle camera at a distance of approximately 21,300 kilometers (13,200 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 45 degrees. Resolution in the image is about 130 meters (430 feet) 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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06210" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06210:  Painting on the Walls	  sur le site de la NASA">Voir l'image 	 PIA06210:  Painting on the Walls	  sur le site de la NASA.</a></div>
PIA06210: Painting on the Walls
<h1>PIA06211:  Cracked Face of Enceladus</h1><div class="PIA06211" lang="en" style="width:784px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The finest details on the surface of Saturn's moon Enceladus are revealed in this 30-meter (100-foot) per-pixel, enhanced-color image taken during Cassini's closest-ever encounter with Enceladus on March 9, 2005.</p><p>The surface of Enceladus is almost uniformly white and even though the natural color of this scene has been exaggerated in intensity, no obvious departure from the uniform hue is apparent. The image was also processed to enhance contrast while avoid saturation of the brightest parts of the scene. Hence, the surface does not have the brightness of fresh snow, as it would appear to the human eye.</p><p>The Sun is illuminating the surface from the left of the image and at a low enough angle that the rugged ridge crests near upper left (which range in height from 50 to 100 meters or 164 to 328 feet) cast dramatic shadows, as at the top center of the image. The origin of the very small dark spots in the ridged terrain is uncertain. They could be shadows cast by small, building-sized outcrops (approximately 60-meter or 200-feett high) just at the limits of resolution. </p><p>Intriguingly, the craters in this scene are quite subdued, indicating that they have been degraded by some process. The craters clearly predate most of the fractures.</p><p>Additionally, multiple sets of fractures running in different directions can be seen. One set above the lower right has a gentle appearance similar to that of the craters. In contrast, the fractures running along the left are fresher. By studying differences in the morphology and patterns of the fractures, scientists will be able to learn about Enceladus' crust and how it, and geologic processes acting within it, have changed over time.</p><p>Images obtained using red, green and blue spectral filters were combined to create this view. The image was taken with the Cassini spacecraft narrow-angle camera at a distance of approximately 5,200 kilometers (3,200 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 39 degrees. The scene is centered on a region at -3 degrees latitude and 218 degrees longitude. </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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06211" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06211:  Cracked Face of Enceladus	  sur le site de la NASA">Voir l'image 	 PIA06211:  Cracked Face of Enceladus	  sur le site de la NASA.</a></div>
PIA06211: Cracked Face of Enceladus
<h1>PIA06212:  Stressed-out Enceladus (3-D)</h1><div class="PIA06212" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This high-resolution stereo anaglyph of Saturn's moon Enceladus shows a region of craters softened by time and torn apart by tectonic stresses. Fractures 100 to 400 meters (330 to 1,300 feet) in width crosscut the terrain: One set trends northeast-southwest and another trends northwest-southeast. North is up. A region of "grooved terrain" is visible on the left. A broad canyon, its floor partly concealed by shadow, is notable on the right.</p><p>The images for this anaglyph were taken in visible light with Cassini's narrow-angle camera at distances from Enceladus ranging from about 25,700 kilometers (16,000 miles, red-colored image) to 5,200 kilometers (3,300 miles, blue-colored image) and at a Sun-Enceladus-spacecraft, or phase, angle ranging from 46 to 39 degrees. Pixel scale in the red image was 150 meters (490 feet) per pixel. Scale in the blue image was 30 meters (100 feet) per pixel. </p><p>A separate, non-stereo version of the scene, showing only the more-distant image, is also available (see <a href="/catalog/PIA06213">PIA06213</a>). The images have been contrast-enhanced to aid visibility.</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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06212" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06212:  Stressed-out Enceladus (3-D)	  sur le site de la NASA">Voir l'image 	 PIA06212:  Stressed-out Enceladus (3-D)	  sur le site de la NASA.</a></div>
PIA06212: Stressed-out Enceladus (3-D)
<h1>PIA06213:  Stressed-out Enceladus</h1><div class="PIA06213" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This image of Saturn's moon Enceladus shows a region of craters softened by time and torn apart by tectonic stresses. Fractures 100 to 400 meters (330 to 1,300 feet) in width crosscut the terrain: One set trends northeast-southwest and another trends northwest-southeast. North is up. A region of "grooved terrain" is visible on the left. A broad canyon, its floor partly concealed by shadow, is notable on the right.</p><p>The image was taken in visible light with Cassini's narrow-angle camera from a distance of about 25,700 kilometers (16,000 miles, red-colored image) and from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 46 degrees. Pixel scale is 150 meters (490 feet) per pixel. The image has been contrast-enhanced to aid visibility.</p><p>A stereo version of the scene is also available (see <a href="/catalog/PIA06212">PIA06212</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 and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06213" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06213:  Stressed-out Enceladus	  sur le site de la NASA">Voir l'image 	 PIA06213:  Stressed-out Enceladus	  sur le site de la NASA.</a></div>
PIA06213: Stressed-out Enceladus
<h1>PIA06214:  Transition on Enceladus (3-D)</h1><div class="PIA06214" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This stereo anaglyph of Saturn's moon Enceladus shows an area that has undergone a very intriguing -- and in places puzzling -- sequence of events. The craters here are subdued, as seen elsewhere on Enceladus, and most, but not all, are older than the fractures. Fracturing has occurred at a wide variety of scales, from the wide rift running through the center of the image to much narrower sets of shorter fractures that crosscut the craters (and each other) to the left.</p><p>The anaglyph has been rotated so that north on Enceladus is up. </p><p>This region is a transition from cratered to wrinkled terrain. Westward (left) of the central rift that divides the two regions are relatively parallel grooves and ridges that are reminiscent of terrain on Jupiter's large moon Ganymede. Very few craters are seen in this area of Enceladus. Eastward (right) of the large rift the terrain becomes more cratered, although the craters are quite degraded (meaning soft and shallow in appearance).</p><p>A prominent fracture runs north-south to the center of the image, then turns sharply to the southwest, cutting across cratered terrain, the large rift, and the grooved terrain. This behavior signifies that it is one of the youngest features in this image.</p><p>The images for this anaglyph were taken in visible light with Cassini's narrow-angle camera, at distances from Enceladus ranging from about 25,700 kilometers (16,000 miles, red-colored image) to 14,000 kilometers (8,800 miles, blue-colored image) and at a Sun-Enceladus-spacecraft, or phase, angle ranging from 46 to 44 degrees. Pixel scale in the red image was 150 meters (490 feet) per pixel. Scale in the blue image was 85 meters (280 feet) per pixel.</p><p>A separate, non-stereo version of the scene, showing only the red image, is also available (see <a href="/catalog/PIA06215">PIA06215</a>). The images have been contrast-enhanced to aid visibility.</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 magnetometer team is based at Imperial College in London, working with team members from the United States and Germany.</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 magnetometer team homepage is <a href="http://www.imperial.ac.uk/research/spat/research/cassini/">http://www.imperial.ac.uk/research/spat/research/cassini/</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06214" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06214:  Transition on Enceladus (3-D)	  sur le site de la NASA">Voir l'image 	 PIA06214:  Transition on Enceladus (3-D)	  sur le site de la NASA.</a></div>
PIA06214: Transition on Enceladus (3-D)
<h1>PIA06215:  Transition on Enceladus</h1><div class="PIA06215" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view of Saturn's moon Enceladus shows an area that has undergone a very intriguing -- and in places puzzling -- sequence of events. The craters here are subdued, as seen elsewhere on Enceladus, and most, but not all, are older than the fractures. Fracturing has occurred at a wide variety of scales, from the wide rift running through the center of the image to much narrower sets of shorter fractures that crosscut the craters (and each other) to the left.</p><p>The image has been rotated so that north on Enceladus is up.</p><p>This region is a transition from cratered to wrinkled terrain. Westward (left) of the central rift that divides the two regions are relatively parallel grooves and ridges that are reminiscent of terrain on Jupiter's large moon Ganymede. Very few craters are seen in this area of Enceladus. Eastward (right) of the large rift the terrain becomes more cratered, although the craters are quite degraded (meaning soft and shallow in appearance).</p><p>A prominent fracture runs north-south to the center of the image, then turns sharply to the southwest, cutting across cratered terrain, the large rift, and the grooved terrain. This behavior signifies that it is one of the youngest features in this image.</p><p>The image was taken in visible light with the narrow angle camera from a distance of about 14,000 kilometers (8,800 miles) and from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 44 degrees. Pixel scale in the image is about 85 meters (280 feet) per pixel.</p><p>A stereo version of the scene is also available (see <a href="/catalog/PIA06214">PIA06214</a>). The images have been contrast-enhanced to aid visibility.</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 magnetometer team is based at Imperial College in London, working with team members from the United States and Germany.</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 magnetometer team homepage is <a href="http://www.imperial.ac.uk/research/spat/research/cassini/">http://www.imperial.ac.uk/research/spat/research/cassini/</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06215" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06215:  Transition on Enceladus	  sur le site de la NASA">Voir l'image 	 PIA06215:  Transition on Enceladus	  sur le site de la NASA.</a></div>
PIA06215: Transition on Enceladus
<h1>PIA06216:  Sliced-up Craters (3-D)</h1><div class="PIA06216" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>During its very close flyby of Enceladus on March 9, 2005, Cassini took images of parts of the icy moon from different viewing angles, allowing the construction of stereo views. These "3-D" views, such as the one presented here, are helpful in interpreting the complex topography of this intriguing little world.</p><p>This scene is an icy landscape that has been scored by tectonic forces. Many of the craters in this terrain have been heavily modified, such as the 10-kilometer-wide (6-mile-wide) crater near upper right that has prominent north-south fracturing along its northeastern slope.</p><p>The anaglyph has been rotated so that north on Enceladus is up.</p><p>The images for this anaglyph were taken in visible light with the narrow angle camera, at distances from Enceladus ranging from about 26,800 kilometers (16,700 miles, red-colored image) to 11,900 kilometers (7,400 miles, blue-colored image) and at a Sun-Enceladus-spacecraft, or phase, angle ranging from 46 to 44 degrees. Pixel scale in the red image was 160 meters (525 feet) per pixel. Scale in the blue image was 70 meters (230 feet) per pixel.</p><p>A separate, non-stereo version of the scene, showing only the red image, is also available (see <a href="/catalog/PIA06217">PIA06217</a>). The images have been contrast-enhanced to aid visibility.</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 team is based at the Space Science Institute, 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</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06216" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06216:  Sliced-up Craters (3-D)	  sur le site de la NASA">Voir l'image 	 PIA06216:  Sliced-up Craters (3-D)	  sur le site de la NASA.</a></div>
PIA06216: Sliced-up Craters (3-D)
<h1>PIA06217:  Sliced-up Craters</h1><div class="PIA06217" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>During its very close flyby of Enceladus on March 9, 2005, Cassini took high resolution images of the icy moon that are helping scientists interpret the complex topography of this intriguing little world.</p><p>This scene is an icy landscape that has been scored by tectonic forces. Many of the craters in this terrain have been heavily modified, such as the 10-kilometer-wide (6-mile-wide) crater near the upper right that has prominent north-south fracturing along its northeastern slope.</p><p>The image has been rotated so that north on Enceladus is up.</p><p>The image was taken in visible light with the narrow angle camera from a distance of about 11,900 kilometers (7,400 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 44 degrees. Pixel scale in the image is 70 meters (230 feet) per pixel.</p><p>A stereo version of the scene is also available (see <a href="/catalog/PIA06216">PIA06216</a>). The image has been contrast-enhanced to aid visibility.</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 magnetometer team is based at Imperial College in London, working with team members from the United States and Germany.</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 magnetometer team homepage is <a href="http://www.imperial.ac.uk/research/spat/research/cassini/">http://www.imperial.ac.uk/research/spat/research/cassini/</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06217" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06217:  Sliced-up Craters	  sur le site de la NASA">Voir l'image 	 PIA06217:  Sliced-up Craters	  sur le site de la NASA.</a></div>
PIA06217: Sliced-up Craters
<h1>PIA06247:  Tiger Stripes Up Close</h1><div class="PIA06247" 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 Saturn's moon Enceladus looks toward the moon's terminator (the transition from day to night) and shows a distinctive pattern of continuous, ridged, slightly curved and roughly parallel faults within the moon's southern polar latitudes. These surface features have been informally referred to by imaging scientists as "tiger stripes" due to their distinctly stripe-like appearance when viewed in false color (see <a href="/catalog/PIA06249">PIA06249</a>).</p><p>Illumination of the scene is from the lower left. The image was obtained in visible light with the Cassini spacecraft narrow-angle camera on July 14, 2005, at a distance of about 20,720 kilometers (12,880 miles) from Enceladus, and at a Sun-Enceladus-spacecraft, or phase, angle of 46 degrees. The image scale is 122 meters (400 feet) per pixel. The image's contrast has been enhanced to aid visibility of surface features.</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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06247" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06247:  Tiger Stripes Up Close	  sur le site de la NASA">Voir l'image 	 PIA06247:  Tiger Stripes Up Close	  sur le site de la NASA.</a></div>
PIA06247: Tiger Stripes Up Close
<h1>PIA06248:  Craters and Cracks</h1><div class="PIA06248" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This dramatic scene from Cassini illustrates an array of processes on Saturn's moon Enceladus, a once geologically active world. Most of the larger craters appear to have softened from their original, presumably crisp appearance, and are cross-cut here by numerous faults.</p><p>Cassini acquired this high-resolution view of Enceladus during its closest encounter yet with any moon of Saturn.</p><p>Toward the bottom of the scene, terrain containing fractured and softened craters gives way to essentially non-cratered terrain consisting of tectonic faults.</p><p>The softened craters, fractured plains and wrinkled terrain on Enceladus suggest geologic activity has taken place in several episodes during the satellite's history. This activity might continue into the present time, although imaging team scientists have seen no evidence for current activity on the moon.</p><p>Illumination of the scene is from the left. The image was obtained in visible light with the Cassini spacecraft narrow-angle camera on July 14, 2005, at a distance of about 11,500 kilometers (7,150 miles) from Enceladus, and at a Sun-Enceladus-spacecraft, or phase, angle of 46 degrees. The image scale is 67 meters (220 feet) per pixel. The image's contrast has been enhanced to aid visibility of surface features.</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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06248" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06248:  Craters and Cracks	  sur le site de la NASA">Voir l'image 	 PIA06248:  Craters and Cracks	  sur le site de la NASA.</a></div>
PIA06248: Craters and Cracks
<h1>PIA06249:  Enceladus In False Color</h1><div class="PIA06249" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>As Cassini approached the intriguing ice world of Enceladus for its extremely close flyby on July 14, 2005, the spacecraft obtained images in several wavelengths that were used to create this false-color composite view.</p><p>The surface of Saturn's moon Enceladus shows a range of crater ages, including regions that have very few discernable craters at Cassini's resolution. This observation indicates that there have been multiple episodes of activity on Enceladus spread over some fraction of its history. The resurfacing mechanism appears to be dominated by tectonic fracturing. As of yet, there is no clear evidence for release of liquid to the surface in either icy volcanic flows or geysers.</p><p>The south polar region (seen here at the lower right) has a distinctive tectonic structure that sets it apart from the rest of the satellite. Its outer boundary is marked by a series of pronounced tectonic "gashes" that form a hoop-like boundary, near 60 degrees south latitude. In this image, this fault zone forms the transition region from the presumably older, cratered terrain in the north to the younger, nearly crater-free region in the south.</p><p>This false-color view is a composite of individual frames obtained using filters sensitive to ultraviolet (centered at 338 nanometers), green (centered at 568 nanometers) and infrared light (centered at 752 nanometers). The view has been enhanced to accentuate subtle color differences and fine-scale surface features.</p><p>The Sun illuminates Enceladus from the lower left, leaving part of the moon in shadow. This view shows the anti-Saturn hemisphere, centered at 42 degrees south latitude, 167 west longitude.</p><p>The images comprising this view were taken with the Cassini spacecraft narrow-angle camera at a distance of about 112,100 kilometers (69,700 miles) from Enceladus, and at a Sun-Enceladus-spacecraft, or phase, angle of 46 degrees. The image scale is about 670 meters (2,200 feet) 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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06249" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06249:  Enceladus In False Color	  sur le site de la NASA">Voir l'image 	 PIA06249:  Enceladus In False Color	  sur le site de la NASA.</a></div>
PIA06249: Enceladus In False Color
<h1>PIA06250:  Boulder-Strewn Surface</h1><div class="PIA06250" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The tortured southern polar terrain of Saturn's moon Enceladus appears strewn with great boulders of ice in these two fantastic views -- the highest resolution images obtained so far by Cassini of any world.</p><p>This comparison view consists of a wide-angle camera image (left) for context, and a high-resolution narrow-angle camera image (right). The two images were acquired at an altitude of approximately 208 kilometers (129 miles), as Cassini made its closest approach yet to Enceladus.</p><p>The wide-angle view shows what appears to be a geologically youthful, tectonically fractured terrain.</p><p>In the narrow-angle view, some smearing of the image due to spacecraft motion is apparent. Both of these views were acquired as Enceladus raced past Cassini's field of view near the time of closest approach. At the time, the imaging cameras were pointed close to the moon's limb (edge), rather than directly below the spacecraft. This allowed for less 'motion blur' than would have been apparent had the cameras pointed straight down. Thus, the terrain imaged here was actually at a distance of 319 kilometers (198 miles) from Cassini.</p><p>At the fine scale afforded by the Cassini spacecraft narrow-angle view, the surface is dominated by ice blocks between 10 and 100 meters (33 and 330 feet) across. The origin of these icy boulders is enigmatic. Scientists are interested in studying the sizes and numbers of the blocks in this bizarre scene, and in understanding whether terrain covered with boulders is common on Enceladus.</p><p>The images in this comparison view are available individually (see <a href="/catalog/PIA06251">PIA06251</a> and <a href="/catalog/PIA06252">PIA06252</a>).</p><p>Image scale is about 4 meters (13 feet) per pixel in the narrow-angle image and about 37 meters (121 feet) per pixel in the wide-angle image. The wide-angle image has been magnified by a factor of two. The contrast in both images has been enhanced to improve the visibility of surface features.</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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06250" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06250:  Boulder-Strewn Surface	  sur le site de la NASA">Voir l'image 	 PIA06250:  Boulder-Strewn Surface	  sur le site de la NASA.</a></div>
PIA06250: Boulder-Strewn Surface
<h1>PIA06251:  Boulder-Strewn Surface -- Wide Angle Camera View</h1><div class="PIA06251" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This wide-angle view is one of the highest resolution images yet acquired by Cassini and shows what appears to be a geologically youthful, tectonically fractured terrain.</p><p>A higher resolution, narrow-angle view of the center of the terrain shown here is available (see <a href="/catalog/PIA06252">PIA06252</a>), as well as a comparison view showing the position of the narrow-angle image within this image (see <a href="/catalog/PIA06250">PIA06250</a>).</p><p>The image was taken during Cassini's very close flyby of Enceladus on July 14, 2005, from a distance of approximately 208 kilometers (129 miles) above Enceladus. Resolution in the image is about 37 meters (121 feet) per pixel. The image's contrast has been enhanced to improve the visibility of surface features.</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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06251" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06251:  Boulder-Strewn Surface -- Wide Angle Camera View	  sur le site de la NASA">Voir l'image 	 PIA06251:  Boulder-Strewn Surface -- Wide Angle Camera View	  sur le site de la NASA.</a></div>
PIA06251: Boulder-Strewn Surface -- Wide Angle Camera View
<h1>PIA06252:  Boulder-Strewn Surface -- Narrow Angle Camera View</h1><div class="PIA06252" lang="en" style="width:512px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The tortured southern polar terrain of Enceladus appears strewn with great boulders of ice in this fantastic view, one of the highest resolution images obtained so far by Cassini of any world.</p><p>Some smearing of the image due to spacecraft motion is apparent in this scene, which was acquired as Enceladus raced past Cassini's field of view near the time of closest approach. At the time, the imaging cameras were pointed close to the moon's limb (edge), rather than directly below the spacecraft. This allowed for less motion blur than would have been apparent had the cameras pointed straight down. Thus, the terrain imaged here was actually at a distance of 319 kilometers (198 miles) from Cassini.</p><p>At this fine scale, the surface is dominated by ice blocks between 10 and 100 meters (33 and 330 feet) across. The origin of these icy boulders is enigmatic. Scientists are interested in studying the sizes and numbers of the blocks in this bizarre scene, and in understanding whether terrain covered with boulders is common on Enceladus.</p><p>A wide-angle camera view centered on this location on Enceladus is available (see <a href="/catalog/PIA06251">PIA06251</a>), as well as a comparison view showing the position of this image within the wide-angle image (see <a href="/catalog/PIA06250">PIA06250</a>).</p><p>The image was taken during Cassini's very close flyby of Enceladus on July 14, 2005, from a distance of approximately 208 kilometers (129 miles) above Enceladus. Resolution in the image is about 4 meters (13 feet) per pixel. The image has been contrast enhanced to improve the visibility of surface.</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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06252" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06252:  Boulder-Strewn Surface -- Narrow Angle Camera View	  sur le site de la NASA">Voir l'image 	 PIA06252:  Boulder-Strewn Surface -- Narrow Angle Camera View	  sur le site de la NASA.</a></div>
PIA06252: Boulder-Strewn Surface -- Narrow Angle Camera View
<h1>PIA06253:  Zooming In On Enceladus (Movie)</h1><div class="PIA06253" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA06253.mov"></a><br>Quick Time Movie of Cassini swooping past Saturn’s icy moon Enceladus</p><p>As it swooped past the south pole of Saturn's moon Enceladus on July 14, 2005, Cassini acquired increasingly high-resolution views of this puzzling ice world.  These views have been combined into this exciting movie sequence. The movie provides a stunning, up-close look at what is surely one of the youngest surfaces in the Saturn system.</p><p>From afar, Enceladus exhibits a bizarre mixture of softened craters and complex, fractured terrains. The movie zooms in on the southern polar terrains and closes in on one of the tectonic stripes that characterize this region which is essentially free of sizeable impact scars.</p><p>The bright oblong area seen during the zoom is an intermediate resolution image from near the time of closest approach that has been melded into the lower resolution mosaic, and artificially brightened.</p><p>The movie ends on the highest resolution image acquired by Cassini which reveals a surface dominated by ice blocks between 10 and 100 meters (33 and 330 feet) across, lying in a region that is unusual in its lack of the very fine-grained frost that seems to cover the rest of Enceladus.</p><p>The lack of frost and the absence of craters are indicators of a youthful surface.</p><p>The initial image in the movie is a large mosaic of 21 narrow-angle camera images that have been arranged to provide a full-disk view of the anti-Saturn hemisphere on Enceladus. This mosaic is a false-color view that includes images taken at wavelengths from the ultraviolet to the infrared portion of the spectrum, and is similar to another, lower resolution false-color view obtained during the flyby (see <a href="/catalog/PIA06249">PIA06249</a>). In false-color, many long fractures on Enceladus exhibit a pronounced difference in color (represented here in blue) from the surrounding terrain.</p><p>A leading explanation for the difference in color is that the walls of the fractures expose outcrops of coarse-grained ice that are free of the powdery surface materials that mantle flat-lying surfaces.</p><p>The original images in the false-color mosaic range in resolution from 350 to 67 meters (1,148 to 220 feet) per pixel and were taken from distances ranging from 61,300 to 11,100 kilometers (38,090 to 6,897 miles) from Enceladus. The mosaic is also available separately (see <a href="/catalog/PIA06254">PIA06254</a>).</p><p>Image scale is about 37 meters (121 feet) per pixel in the wide-angle camera image and about 4 meters (13 feet) per pixel in the narrow-angle image (see PIA06250 for these images). Both of these ultra-high resolution views were acquired from an altitude of approximately 208 kilometers (129 miles) above Enceladus as the spacecraft near the time of closest approach during the flyby.</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 team is based at the Space Science Institute, 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</a>. For additional images visit the Cassini imaging team homepage <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06253" onclick="window.open(this.href); return false;" title="Voir l'image 	 PIA06253:  Zooming In On Enceladus (Movie)	  sur le site de la NASA">Voir l'image 	 PIA06253:  Zooming In On Enceladus (Movie)	  sur le site de la NASA.</a></div>
PIA06253: Zooming In On Enceladus (Movie)

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