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

PIA08207: Moons of Interest	PIA08249: Moon With a Warm Heart
PIA08258: Living Moon	$<h1>PIA08276: Enigma in Ice</h1><div class="PIA08276" lang="en" style="width:265px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini spies the wrinkled, fractured and remarkably crater-poor terrain of Enceladus. Scientists are working to understand what causes the moon's surprising geologic activity (see <a href="/catalog/PIA07759">PIA07759</a>).</p><p>North on Enceladus (505 kilometers, 314 miles across) is up and rotated 20 degrees to the left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 8, 2006 at a distance of approximately 560,000 kilometers (348,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 103 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08276" onclick="window.open(this.href); return false;" title="Voir l'image PIA08276: Enigma in Ice sur le site de la NASA">Voir l'image PIA08276: Enigma in Ice sur le site de la NASA.</a></div>$ PIA08276: Enigma in Ice
PIA08280: A Folded Surface	PIA08286: Half-lit Enceladus
$<h1>PIA08312: Relaxing on Enceladus</h1><div class="PIA08312" lang="en" style="width:268px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Looking down onto the northern hemisphere of geologically complex Enceladus, the Cassini spacecraft spies softened, or "relaxed," craters and east-west trending fractures and faults.</p><p>The anti-Saturn hemisphere of Enceladus (505 kilometers, or 314 miles across) is lit here.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 12, 2006 at a distance of approximately 521,000 kilometers (324,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 101 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08312" onclick="window.open(this.href); return false;" title="Voir l'image PIA08312: Relaxing on Enceladus sur le site de la NASA">Voir l'image PIA08312: Relaxing on Enceladus sur le site de la NASA.</a></div>$ PIA08312: Relaxing on Enceladus	PIA08321: Ghostly Fingers of Enceladus
PIA08336: Ice Fountains	PIA08342: Map of Enceladus - December 2006
PIA08353: Enceladus: Trailing Hemisphere	$<h1>PIA08354: Fractured World</h1><div class="PIA08354" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Numerous blue-green fractures can be seen in this false-color mosaic taken during Cassini's second close flyby of Enceladus, on March 9, 2005.</p><p>The mosaic shows the anti-Saturnian hemisphere of Enceladus -- the side that always faces away from Saturn. This region contains a number of tectonic and impact features and shows how these two geologic forces interact on Enceladus. The center left portion of this mosaic is dominated by Diyar Planitia. Like Sarandib Planitia observed in the previous Enceladus flyby, the region is characterized by low ridges and troughs. Throughout this hemisphere, fractures of all sizes disrupt the previously existing cratered terrain and even the comparatively youthful Diyar Planitia.</p><p>Many of the younger fractures have blue-green walls, revealing coarse-grained water ice in the top layers of Enceladus' lithosphere, compared to the fine-grained ice that coats much of Enceladus' surface. The blue-green color is very similar to the coatings surrounding the south polar "tiger stripes" (these appear greener than the features in the south polar mosaic released in 2005 (see <a href="/catalog/PIA07800">PIA07800</a>) due to the use of clear-filter images, instead of green, in that mosaic).</p><p>A higher resolution cropped section of this mosaic is available in <a href="/catalog/PIA08355">PIA08355</a>.</p><p>This mosaic consists of 25 false-color footprints (75 images total) taken by the Cassini spacecraft's narrow-angle camera. The mosaic uses an ultraviolet filter centered at 338 nanometers for blue, a green filter centered at 568 nanometers for green and a near-infrared filter centered at 930 nanometers for red -- thus covering a wider spectrum region than the human eye. To create a single, full-disk mosaic, the images were reprojected into an orthographic projection centered at 1.5 degrees south latitude, 204 degrees west longitude with a pixel scale of 90 meters (295 feet) per pixel. The black strip seen at the top of the mosaic is an unfilled seam between two images.</p><p>The original images were taken from distances ranging from 4,300 to 31,800 kilometers (2,670 to 19,760 miles). The images have a phase, or sun-Enceladus-spacecraft, angle of 45 degrees. </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/PIA08354" onclick="window.open(this.href); return false;" title="Voir l'image PIA08354: Fractured World sur le site de la NASA">Voir l'image PIA08354: Fractured World sur le site de la NASA.</a></div>$ PIA08354: Fractured World
$<h1>PIA08355: Exploring Icy Canyons</h1><div class="PIA08355" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Fine topographic detail and color variations are revealed in this 11-image, false color mosaic taken during Cassini's second close flyby of Saturn's moon Enceladus, on March 9, 2005.</p><p>This mosaic, a high-resolution cropped section of the full-disk mosaic available in <a href="/catalog/PIA08354">PIA08354</a>), shows the center of the anti-Saturnian hemisphere of Enceladus -- the side of Enceladus that always faces away from Saturn. The left portion of the mosaic is dominated by Diyar Planitia. Like Sarandib Planitia, observed in the previous Enceladus flyby of February 2005, the region is characterized by low ridges and troughs. Throughout this region, fractures of all sizes cut across Diyar Planitia and the older, cratered terrain at center and right.</p><p>Many of the younger fractures have blue-green walls, revealing coarse-grained water ice in the top layers of Enceladus' lithosphere, compared to the fine-grained ice that coats much of Enceladus' surface. The blue-green color is very similar to the coatings of the south polar "tiger stripes." The color here is greener than the features in the south polar mosaic released in 2005 (see <a href="/catalog/PIA07800">PIA07800</a>) due to the use of clear-filter images, instead of green, in the latter mosaic.</p><p>This mosaic consists of 11 false-color footprints (33 images total) taken by the Cassini spacecraft's narrow-angle camera. The mosaic uses an ultraviolet filter centered at 338 nanometers for blue, a green filter centered at 568 nanometers for green and a near-infrared filter centered at 930 nanometers for red, thus covering a wider spectrum region than the human eye. To create a single mosaic, the images were reprojected into an orthographic projection with a pixel scale of 45 meters per pixel. The region is centered at 3.9 degrees north latitude, 208.9 degrees west longitude and covers an area 233 kilometers (145 miles) by 154 kilometers (96 miles) in size. </p><p>The original images were taken by the Cassini spacecraft's narrow-angle camera from distances ranging from 4,300 to 27,050 kilometers (2,670 to 16,810 miles). The images have a phase, or sun-Enceladus-spacecraft, angle of 45 degrees. Image scale is 45 meters (150 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 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/PIA08355" onclick="window.open(this.href); return false;" title="Voir l'image PIA08355: Exploring Icy Canyons sur le site de la NASA">Voir l'image PIA08355: Exploring Icy Canyons sur le site de la NASA.</a></div>$ PIA08355: Exploring Icy Canyons	$<h1>PIA08385: Enceladus Jet Sources</h1><div class="PIA08385" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This map of the south polar region of Saturn's moon Enceladus shows the correlation between jet sources identified in Cassini imaging data and hot spots on the surface located by the composite infrared spectrometer instrument.</p><p>To identify jet source locations on the surface, imaging scientists carefully measured the locations and orientations of individual jets observed along the moon's limb in Cassini images taken from multiple viewing angles (see <a href="/catalog/PIA08386">PIA08386</a>). For each jet measurement, the researchers then computed a curve, or ground track, on the surface of Enceladus along which that jet might lie. The ground tracks from all of the measurements made in the various images produced many intersections on this map. By considering the jet directions at every possible intersection, the researchers isolated eight clusters of ground track intersections as jet sources.</p><p>The eight identified jet source locations are labeled with yellow roman numerals. Composite infrared spectrometer hot spots are red boxes labeled with green capital letters. The line-of-sight intersections indicating the measurements of each source in individual images are shown as colored diamonds. White circles indicate the uncertainty in the locations of those sets of intersections.</p><p>The map is a polar stereographic projection of Cassini imaging data. The four tiger stripe fractures, or sulci, are labeled here. The south pole is dead center on the map. Key longitudes are also labeled around the perimeter of the map. </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/PIA08385" onclick="window.open(this.href); return false;" title="Voir l'image PIA08385: Enceladus Jet Sources sur le site de la NASA">Voir l'image PIA08385: Enceladus Jet Sources sur le site de la NASA.</a></div>$ PIA08385: Enceladus Jet Sources
$<h1>PIA08386: Jet Blue</h1><div class="PIA08386" lang="en" style="width:659px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini imaging scientists used views like this one to help them identify the source locations for individual jets spurting ice particles, water vapor and trace organic compounds from the surface of Saturn's moon Enceladus.</p><p>Their study -- published in the Oct. 11, 2007, issue of the journal Nature -- identifies eight source locations, all on the prominent tiger stripe fractures, or sulci, in the moon's south polar region. Some of the sources occur in regions not yet observed by Cassini's composite infrared spectrometer, and the researchers predict that future Cassini observations of those locations will find elevated temperatures.</p><p>This false-color view was created by combining three clear filter images taken at nearly the same time as <a href="/catalog/PIA07759">PIA07759</a>. This image product was then specially processed to enhance the individual jets that compose the plume. (<a href="/catalog/PIA07759">PIA07759</a> was instead processed to reveal subtleties in the brightness of the overall plume that comprises the jets.) Some artifacts due to the processing are present in the image. The final product was colored as blue for dramatic effect.</p><p>The images were acquired with the Cassini spacecraft narrow-angle camera on Nov. 27, 2005 at a distance of approximately 148,000 kilometers (92,000 miles) from Enceladus and at a sun-Enceladus-spacecraft, or phase, angle of 161 degrees. Scale in the original images is about 880 meters (0.5 mile) per pixel. This view has been magnified by a factor of two from the original images. </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/PIA08386" onclick="window.open(this.href); return false;" title="Voir l'image PIA08386: Jet Blue sur le site de la NASA">Voir l'image PIA08386: Jet Blue sur le site de la NASA.</a></div>$ PIA08386: Jet Blue	$<h1>PIA08409: The North Polar Region of Enceladus</h1><div class="PIA08409" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA08409_fig1.jpg"></a><br />Click on image for larger annotated version</p><p>This three-image mosaic is the highest resolution view yet obtained of Enceladus' north polar region. The view looks southward over cratered plains from high above the north pole of Enceladus.</p><p>Cassini's March 2008 flyby of Enceladus was designed to directly investigate the ongoing plume activity at the moon's south pole, but the path of the spacecraft allowed investigation of older evidence for internal activity near the north pole.</p><p>Compared to much of the moon's southern hemisphere—the south polar region in particular—the north polar region is much older and covered with craters. These craters are captured at different stages of disruption and alteration by tectonic activity and probably past heating from below. Many of the craters seen here are sliced by small parallel cracks that seem to be ubiquitous throughout the old cratered terrains on Enceladus. The mosaic also shows a variety of impact crater shapes, some with bowed-up floors and smaller craters within, very likely indicating that the icy crust in this area was at some time warmer than at present. While this conclusion was previously reached from NASA Voyager spacecraft images, these new data provide a much more detailed look at the fractures that modify the surface. This data will give a significantly improved comparison of the geologic history at the satellite's north pole with that at the south pole.</p><p>Two prominent craters in this view, Ali Baba and Aladdin (the two overlapping craters near center), are among the largest craters known on Enceladus.</p><p>Several areas of much younger terrain are visible in this mosaic, including Samarkand Sulci, an area of disrupted terrain that runs north-south at left of center, and the "leading hemisphere terrain," a region, seen at right, filled with tectonic fractures, ridges and "ridged terrain."</p><p>Samarkand Sulci slices through some prominent craters that were seen in Voyager images. At that time, it was thought that the portions of the craters that extend into Samarkand were completely destroyed by whatever process formed Samarkand. However, Cassini images show remnants of the crater rims that have survived. This new insight provides a benchmark for measuring how tectonic processes modify older terrains, and will also help imaging scientists develop a more accurate timeline for the geologic history of these terrains.</p><p>Lit terrain seen here is on the Saturn-facing hemisphere 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 March 12, 2008. The view was acquired at a distance of approximately 32,000 kilometers (20,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 115 degrees. Image scale is 176 meters (577 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 operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08409" onclick="window.open(this.href); return false;" title="Voir l'image PIA08409: The North Polar Region of Enceladus sur le site de la NASA">Voir l'image PIA08409: The North Polar Region of Enceladus sur le site de la NASA.</a></div>$ PIA08409: The North Polar Region of Enceladus
PIA08417: Map of Enceladus	PIA08829: Out of the Noise
PIA08835: Arabian Sulci	$<h1>PIA08881: Icy Outpost?</h1><div class="PIA08881" lang="en" style="width:216px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft looks down under at the tortured south polar region of Enceladus, crossed by its "tiger stripes," or sulci, as the long, nearly parallel fractures are officially known. The use of enhanced color in this and other composite images makes the fractures and faults easier for the eye to detect.</p><p>The moon's excess warmth, water ice jets, and huge vapor plume laced with simple organic materials make it an excellent candidate for the search for pre-biotic chemistry, and possibly even life, beyond Earth.</p><p>Enceladus is 505 kilometers (314 miles) across.</p><p>This false-color view is a composite of images obtained using filters sensitive to ultraviolet, green and infrared light. The images were taken by the Cassini spacecraft narrow-angle camera on Jan. 16, 2007 at a distance of approximately 657,000 kilometers (408,000 miles) from Enceladus. Image scale is 4 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">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/PIA08881" onclick="window.open(this.href); return false;" title="Voir l'image PIA08881: Icy Outpost? sur le site de la NASA">Voir l'image PIA08881: Icy Outpost? sur le site de la NASA.</a></div>$ PIA08881: Icy Outpost?
PIA08915: Astral Pearl	PIA08919: Moons in the Night
PIA08921: Casting a Shadow	PIA08954: Icy Emanations
$<h1>PIA08980: Exciting Orb</h1><div class="PIA08980" lang="en" style="width:247px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Enceladus appears as a rather bland orb in this far-off snapshot, but the dark markings near its south pole belie that assumption. The markings, called sulci, are long, roughly parallel fractures from which a spray of icy particles escapes into the void, forming Saturn's E ring.</p><p>This view looks toward the Saturn-facing hemisphere on Enceladus (505 kilometers, or 314 miles across). North is up.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on May 27, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 930 nanometers. The view was acquired at a distance of approximately 615,000 kilometers (382,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 3 degrees. Image scale is 4 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08980" onclick="window.open(this.href); return false;" title="Voir l'image PIA08980: Exciting Orb sur le site de la NASA">Voir l'image PIA08980: Exciting Orb sur le site de la NASA.</a></div>$ PIA08980: Exciting Orb	$<h1>PIA09003: Scars on an Active World</h1><div class="PIA09003" lang="en" style="width:500px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This nearly equatorial view shows cratered regions on Enceladus in the central part of its leading hemisphere and high northern latitudes. Much of the rest of the geologically active moon is relatively crater free and covered by fractures and folds.</p><p>North on Enceladus (505 kilometers, or 314 miles across) is up.</p><p>The image was taken in polarized green light with the Cassini spacecraft narrow-angle camera on June 28, 2007 at a distance of approximately 293,000 kilometers (182,000 miles) from Enceladus. Image scale is 2 kilometers (1 mile) per pixel. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09003" onclick="window.open(this.href); return false;" title="Voir l'image PIA09003: Scars on an Active World sur le site de la NASA">Voir l'image PIA09003: Scars on an Active World sur le site de la NASA.</a></div>$ PIA09003: Scars on an Active World
PIA09729: Enceladus and Dione	$<h1>PIA09761: Icy Jets Aglow</h1><div class="PIA09761" lang="en" style="width:792px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>With Enceladus nearly in front of the Sun from Cassini's viewpoint, its icy jets become clearly visible against the background.</p><p>The view here is roughly perpendicular to the direction of the linear "tiger stripe" fractures, or sulci, from which the jets emanate. The jets here provide the extra glow at the bottom of the moon. The general brightness of the sky around the moon is the diffuse glow of Saturn's E ring, which is an end product of the jets' material being spread into a torus, or doughnut shape, around Saturn.</p><p>North on Enceladus (505 kilometers, or 314 miles across) is up and rotated 20 degrees to the left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 30, 2007. The view was obtained at a distance of approximately 187,000 kilometers (116,000 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 157 degrees. Image scale is 1 kilometer (0.6 mile) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">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/PIA09761" onclick="window.open(this.href); return false;" title="Voir l'image PIA09761: Icy Jets Aglow sur le site de la NASA">Voir l'image PIA09761: Icy Jets Aglow sur le site de la NASA.</a></div>$ PIA09761: Icy Jets Aglow
PIA09770: A Fresh Face	PIA09775: Enceladus in Hiding

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