Galerie de photos de Titan, satellite de la planète Saturne

<h1>PIA08426: Radar Images Shikoku - "Great Britain"</h1><div class="PIA08426" 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 Titan from the Synthetic Aperture Radar instrument on the Cassini spacecraft shows Shikoku Facula, a region that is bright in both radar and visible wavelengths. This radar image was taken on April 30, 2006. For a visible-light image of Shikoku Facula see <a href="/catalog/PIA07752">PIA07752</a>.</p></p>A circular feature with a radar-dark interior, probably an impact crater, is seen near the top of the image and is about 35 kilometers (22 miles) in diameter. Numerous linear dark features are seen running across the image, mostly on the right-hand side. These features were seen on other radar images (see <a href="/catalog/PIA08425">PIA08425</a> and <a href="/catalog/PIA03567">PIA03567</a>) and interpreted as dune fields. Bright, ridge-like features mainly on the lower half of the image may be topographically high regions. Radar-dark, thin, sinuous features, which may be channels draining from the bright to the dark regions, are seen below the circular feature. </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 radar instrument was built by JPL and the Italian Space Agency, working with team members from the United States and several European countries. </p></p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08426" onclick="window.open(this.href); return false;" title="Voir l'image PIA08426: Radar Images Shikoku - "Great Britain" sur le site de la NASA">Voir l'image PIA08426: Radar Images Shikoku - "Great Britain" sur le site de la NASA.</a></div>
PIA08426: Radar Images Shikoku - "Great Britain"
<h1>PIA09171: Titan's Giant North Pole Cloud</h1><div class="PIA09171" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini's visual and infrared mapping spectrometer has imaged a huge cloud system covering the north pole of Titan.</p></p>This composite image shows the cloud, imaged at a distance of 90,000 kilometers (54,000 miles) during a Dec. 29, 2006, flyby designed to observe the limb of the moon. Cassini's visual and infrared mapping spectrometer scanned the limb, revealing this spectacular cloud system. It covers the north pole down to a latitude of 62 degrees north and at all observed longitudes. </p></p>Such a cloud cover was expected, according to the atmospheric circulation models of Titan, but it had never been observed before with such details. The condensates may be the source of liquids that fill the lakes recently discovered by the radar instrument. This image was color-coded, with blue, green and red at 2 microns, 2.7, and 5 microns, respectively.</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 Visual and Infrared Mapping Spectrometer team is based at the University of Arizona where this image was produced. </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 visual and infrared mapping spectrometer team homepage is at <a href="http://wwwvims.lpl.arizona.edu">http://wwwvims.lpl.arizona.edu</a>. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09171" onclick="window.open(this.href); return false;" title="Voir l'image PIA09171: Titan's Giant North Pole Cloud sur le site de la NASA">Voir l'image PIA09171: Titan's Giant North Pole Cloud sur le site de la NASA.</a></div>
PIA09171: Titan's Giant North Pole Cloud
<h1>PIA01943: Lakes and more lakes</h1><div class="PIA01943" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>In this image taken by the Cassini radar system, a previously unseen style of lakes is revealed. The lakes here assume complex shapes and are among the darkest seen so far on Titan. </p><p>The lake at the left is reminiscent both in form and scale of the flooded drainage system, Lake Powell in Utah and Arizona. However, the Titan lake has been filled with liquid methane and ethane rather than water. In the lake at right, older terrain may have been deeply cut by river valleys before it was flooded by the embaying lake. For a different radar view from the same flyby see <a href="/catalog/PIA01942">PIA01942</a>.</p><p>This radar image was acquired Oct. 9, 2006, and is centered near 80 degrees north latitude, 357 degrees west longitude. It measures about 310 kilometers by 100 kilometers (190 miles by 62 miles). Smallest details in this image are about 500 meters (1,640 feet) across. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The radar instrument team is based at JPL, working with team members from the United States and several European countries. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01943" onclick="window.open(this.href); return false;" title="Voir l'image PIA01943: Lakes and more lakes sur le site de la NASA">Voir l'image PIA01943: Lakes and more lakes sur le site de la NASA.</a></div>
PIA01943: Lakes and more lakes
<h1>PIA09846: Alien Weather</h1><div class="PIA09846" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A bright streak of cloud graces the northern skies of Titan. </p><p>This is the second time the Cassini spacecraft's imaging cameras have spotted clouds at 60 degrees north latitude on Titan—the previous occasion being the Feb. 2007 observations during which the cameras saw the dark, hydrocarbon lakes that cover much of the north. </p><p>That cloud feature is visible at the bottom of the still image in <a href="/catalog/PIA08365">PIA08365</a>.</p><p>The circular, 400-kilometer wide impact feature Menrva can be seen near center.</p><p>North on Titan (5,150 kilometers, or 3,200 miles across) is up and rotated 26 degrees to the right. </p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Jan. 20, 2008 using a combination of spectral filters sensitive to wavelengths of polarized infrared light centered at 938 and 746 nanometers. The view was acquired at a distance of approximately 1.3 million kilometers (800,000 miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 58 degrees. Image scale is 8 kilometers (5 miles) per pixel. Due to scattering of light by Titan's hazy atmosphere, the sizes of surface features that can be resolved are a few times larger than the actual pixel scale.</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/PIA09846" onclick="window.open(this.href); return false;" title="Voir l'image PIA09846: Alien Weather sur le site de la NASA">Voir l'image PIA09846: Alien Weather sur le site de la NASA.</a></div>
PIA09846: Alien Weather
<h1>PIA06230: Cassini's View of Titan: Natural Color Composite</h1><div class="PIA06230" lang="en" style="width:758px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This natural color composite was taken during the Cassini spacecraft's April 16, 2005, flyby of Titan. It is a combination of images taken through three filters that are sensitive to red, green and violet light. </p><p>It shows approximately what Titan would look like to the human eye: a hazy orange globe surrounded by a tenuous, bluish haze. The orange color is due to the hydrocarbon particles which make up Titan's atmospheric haze. This obscuring haze was particularly frustrating for planetary scientists following the NASA Voyager mission encounters in 1980-81. Fortunately, Cassini is able to pierce Titan's veil at infrared wavelengths (see <a href="/catalog/PIA06228">PIA06228</a>).</p><p>North on Titan is up and tilted 30 degrees to the right.</p><p>The images to create this composite were taken with the Cassini spacecraft wide angle camera on April 16, 2005, at distances ranging from approximately 173,000 to 168,200 kilometers (107,500 to 104,500 miles) from Titan and from a Sun-Titan-spacecraft, or phase, angle of 56 degrees. Resolution in the images is approximately 10 kilometers 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/PIA06230" onclick="window.open(this.href); return false;" title="Voir l'image PIA06230: Cassini's View of Titan: Natural Color Composite sur le site de la NASA">Voir l'image PIA06230: Cassini's View of Titan: Natural Color Composite sur le site de la NASA.</a></div>
PIA06230: Cassini's View of Titan: Natural Color Composite
<h1>PIA06541: Titan's Dark Terrain</h1><div class="PIA06541" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view from Cassini's second close flyby of Titan on Dec. 13, 2004 shows bright material within the large dark region west of Xanadu. The area in this image is a region that has not previously been seen by Cassini at this high resolution.</p><p>The image was taken with the Cassini spacecraft narrow angle camera at a distance of approximately 125,900 kilometers (78,200 miles) from Titan, using a filter centered at 938 nanometers that emphasizes the moon's surface and clouds. The image scale is 735 meters (2,400 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/PIA06541" onclick="window.open(this.href); return false;" title="Voir l'image PIA06541: Titan's Dark Terrain sur le site de la NASA">Voir l'image PIA06541: Titan's Dark Terrain sur le site de la NASA.</a></div>
PIA06541: Titan's Dark Terrain
<h1>PIA06120: High in the Titan Atmosphere</h1><div class="PIA06120" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>High-altitude haze and perhaps cloud layers are visible in this imaging science subsystem image acquired on Oct. 24, 2004, as the Cassini spacecraft neared its first close encounter with Titan. The image was captured at a distance of about one million kilometers (620,000 miles) using a near-ultraviolet filter, which is sensitive to scattering by small particles. </p><p>The Sun preferentially illuminates the southern hemisphere at this time of year, and the northern day-night terminator is visible at the upper boundary. The well-known global detached haze layer, hundreds of kilometers or miles above Titan's surface, is visible as a thin bright ring around the entire planet. This layer is produced by photochemical reactions. </p><p>At the northern high-latitude edge of the image, additional striations are visible, caused by particulates that are at a high enough altitude to be illuminated by the Sun near the horizon despite the surface below being in darkness. These striations may simply be caused by wave perturbations propagating through the detached haze, or they may be evidence of additional regional haze or cloud layers not present at other latitudes.</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/PIA06120" onclick="window.open(this.href); return false;" title="Voir l'image PIA06120: High in the Titan Atmosphere sur le site de la NASA">Voir l'image PIA06120: High in the Titan Atmosphere sur le site de la NASA.</a></div>
PIA06120: High in the Titan Atmosphere
<h1>PIA07644: When Moons Align</h1><div class="PIA07644" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>In a rare moment, the Cassini spacecraft captured this enduring portrait of a near-alignment of four of Saturn's restless moons. Timing is critical when trying to capture a view of multiple bodies, like this one. All four of the moons seen here were on the far side of the rings from the spacecraft when this image was taken; and about an hour later, all four had disappeared behind Saturn.</p><p>Seen here are Titan (5,150 kilometers, or 3,200 miles across) and Dione (1,126 kilometers, or 700 miles across) at bottom; Prometheus (102 kilometers, or 63 miles across) hugs the rings at center; Telesto (24 kilometers, or 15 miles across) is a mere speck in the darkness above center.</p><p>This image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 17, 2005, at a distance of approximately 3.4 million kilometers (2.1 million miles) from Titan and 2.5 million kilometers (1.6 million miles) from Dione. The image scale is 16 kilometers (10 miles) per pixel on Dione and 21 kilometers (13 miles) per pixel on Titan.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p></p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</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/PIA07644" onclick="window.open(this.href); return false;" title="Voir l'image PIA07644: When Moons Align sur le site de la NASA">Voir l'image PIA07644: When Moons Align sur le site de la NASA.</a></div>
PIA07644: When Moons Align
<h1>PIA08736: Clouds over Titan</h1><div class="PIA08736" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This image depicts Saturn's moon Titan as seen by the visual and infrared mapping spectrometer after closest approach on a July 22, 2006, flyby. </p><p>The image was generated using the 5 micron wavelength for red, the 2 micron wavelength for green and the 1.2 micron wavelength for blue. The clouds, circled in the annotated version, are of the type seen previously and reported in the journal Science. The image shows the clouds spreading out along the 40-degree-south latitude line. </p><p>This image was taken at 160,000 kilometers (99,000 miles) from Titan.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The Visual and Infrared Mapping Spectrometer team is based at the University of Arizona where this image was produced.</p><p>For more information about the Cassini-Huygens mission <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a> The visual and infrared mapping spectrometer team homepage is at <a href="http://wwwvims.lpl.arizona.edu">http://wwwvims.lpl.arizona.edu</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08736" onclick="window.open(this.href); return false;" title="Voir l'image PIA08736: Clouds over Titan sur le site de la NASA">Voir l'image PIA08736: Clouds over Titan sur le site de la NASA.</a></div>
PIA08736: Clouds over Titan
<h1>PIA09176: Ganesa Macula</h1><div class="PIA09176" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This radar image of Titan shows Ganesa Macula, interpreted as a cryovolcano (ice volcano), and its surroundings. Cryovolcanism is thought to have been an important process on Titan and may still be happening today. </p><p>This mosaic was made from images obtained by the Cassini radar mapper on two flybys. The lower part of the image was from the flyby on Oct. 26, 2004, while the upper part was from the Jan. 13, 2007, flyby. Ganesa macula is the dark circular feature seen on the lower left of the mosaic. Bright rounded features, interpreted as cryovolcanic flows, are seen towards the top and the right of the mosaic. </p><p>This image mosaic was taken in synthetic aperture mode. The resolution of the images is approximately 350 meters (1,150 feet). North is toward the top. The image mosaic is about 570 kilometers (354 miles) wide and 390 kilometers (240 miles) high. </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 radar instrument was built by JPL and the Italian Space Agency, working with team members from the United States and several European countries. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09176" onclick="window.open(this.href); return false;" title="Voir l'image PIA09176: Ganesa Macula sur le site de la NASA">Voir l'image PIA09176: Ganesa Macula sur le site de la NASA.</a></div>
PIA09176: Ganesa Macula
<h1>PIA08118: A View from Huygens - Jan. 14, 2005</h1><div class="PIA08118" lang="en" style="width:516px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA08118.mov"></a><br />Click on the image for QuickTime Movie of<br />A View from Huygens - Jan. 14, 2005</p><p>This movie was built with data collected during the 147-minute plunge through Titan's thick orange-brown atmosphere to a soft sandy riverbed by the European Space Agency's Huygens Descent Imager/Spectral Radiometer on Jan. 14, 2005, </p><p>In 4 minutes and 40 seconds, the movie shows what the probe "saw" within the few hours of the descent and the landing. On approach, Titan appeared as just a little disk in the sky among the stars, but after landing, the probe's camera resolved little grains of sand millions of times smaller than Titan. </p><p>At first, the Huygens camera just saw fog over the distant surface. The fog started to clear only at about 60 kilometers (37 miles) altitude, making it possible to resolve surface features as large as 100 meters (328 feet). Only after landing could the probe's camera resolve the little grains of sand. The movie provides a glimpse of such a huge change of scale. </p><p>A music-only version of the video is available at <a href="http://photojournal.jpl.nasa.gov/archive/PIA08118_m.mov">http://photojournal.jpl.nasa.gov/archive/PIA08118_m.mov</a>.</p><p>The Huygens probe was delivered to Saturn's moon Titan by the Cassini spacecraft, which is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif. NASA supplied two instruments on the probe, the descent imager/spectral radiometer and the gas chromatograph mass spectrometer. </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 descent imager/spectral radiometer team is based at the University of Arizona, Tucson.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a></p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08118" onclick="window.open(this.href); return false;" title="Voir l'image PIA08118: A View from Huygens - Jan. 14, 2005 sur le site de la NASA">Voir l'image PIA08118: A View from Huygens - Jan. 14, 2005 sur le site de la NASA.</a></div>
PIA08118: A View from Huygens - Jan. 14, 2005
<h1>PIA06202: Tracing Surface Features on Titan--Close-Ups</h1><div class="PIA06202" lang="en" style="width:778px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>These images of Titan's south polar region were acquired during Cassini's first distant encounter with the smog-enshrouded moon on July 2, 2004. The spacecraft approached Titan at a distance of about 340,000 kilometers (211,000 miles) during this flyby.</p><p>This montage contains pairs of close-up images, with the original images (at left) and also versions in which some of the narrow, dark, curvilinear and rectilinear surface features have been traced by red lines (at right). These dark features may be examples of surface channels and deeper crustal structures such as faults. The longest features (in the third and fourth pairs from the top) extend for as much as 1,500 kilometers (930 miles) across the surface and are as narrow as 10 kilometers (6 miles) across. At the bottom left, a single frame shows a small, dark, circular feature, which could be an impact crater. For reference, the white bar at the bottom right is a 1,000-kilometers-long (620 mile) scale bar.</p><p>A large mosaic of this region and the source of the images in this montage is also available (see <a href="/catalog/PIA06203">PIA06203</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/PIA06202" onclick="window.open(this.href); return false;" title="Voir l'image PIA06202: Tracing Surface Features on Titan--Close-Ups sur le site de la NASA">Voir l'image PIA06202: Tracing Surface Features on Titan--Close-Ups sur le site de la NASA.</a></div>
PIA06202: Tracing Surface Features on Titan--Close-Ups
<h1>PIA07755: Naming New Lands - September Flyby</h1><div class="PIA07755" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Like an ancient mariner charting the coastline of an unexplored wilderness, Cassini's repeated encounters with Titan are turning a mysterious world into a more familiar place.</p><p>During a Titan flyby on Sept. 7, 2005, the spacecraft's narrow-angle camera acquired multiple images that were combined to create the mosaic presented here. An annotated version of the mosaic, showing provisional names applied to Titan's features, is also available (see <a href="/catalog/PIA07753">PIA07753</a>).</p><p>The image shows more than half of Titan's Saturn-facing hemisphere at moderate resolution, including the Fensal-Aztlan region, formerly "the H." This view is centered at 6.5 degrees north latitude, 20.6 degrees west longitude, and has a pixel scale of about 2 kilometers (1 mile) per pixel. It is an orthographic projection, rotated so that north on Titan is up.</p><p>This view is composed of 20 images obtained on Sept. 7, 2005, each processed to enhance surface detail. The central portion of this mosaic was previously released (see <a href="/catalog/PIA07732">PIA07732</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 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</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/PIA07755" onclick="window.open(this.href); return false;" title="Voir l'image PIA07755: Naming New Lands - September Flyby sur le site de la NASA">Voir l'image PIA07755: Naming New Lands - September Flyby sur le site de la NASA.</a></div>
PIA07755: Naming New Lands - September Flyby
<h1>PIA08246: Outbound View</h1><div class="PIA08246" lang="en" style="width:763px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini's flyby of Titan on July 22, 2006 sent the spacecraft into a more inclined orbit of Saturn. This remarkably clear view from that flyby shows the moon's characteristically dark mid-latitudes, and more southern terrain than the Cassini spacecraft has usually been able to glimpse.</p><p>This was the first in a series of "illuminated outbound flybys" of Titan (5,150 kilometers, or 3,200 miles across) where the illuminated hemisphere was visible following the closest approach.</p><p>The image was taken in polarized infrared light with the Cassini spacecraft wide-angle camera on July 22, 2006 at a distance of approximately 148,000 kilometers (92,000 miles) from Titan. Image scale is 9 kilometers (5 miles) per pixel.</p><p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08246" onclick="window.open(this.href); return false;" title="Voir l'image PIA08246: Outbound View sur le site de la NASA">Voir l'image PIA08246: Outbound View sur le site de la NASA.</a></div>
PIA08246: Outbound View
<h1>PIA02238: Titan's thick haze layer</h1><div class="PIA02238" lang="en" style="width:485px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Titan's thick haze layer is shown in this enhanced Voyager 1 image taken Nov. 12, 1980 at a distance of 435,000 kilometers (270,000 miles). Voyager images of Saturn's largest moon show Titan completely enveloped by haze that merges with a darker "hood" or cloud layer over the north pole. Such a mantle is not present at the south pole. At Voyager's closest approach to Titan on Nov. 11, 1980, spacecraft instruments found that the moon has a substantial atmosphere, far denser than that of Mars and possibly denser than Earth's. The Voyager Project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02238" onclick="window.open(this.href); return false;" title="Voir l'image PIA02238: Titan's thick haze layer sur le site de la NASA">Voir l'image PIA02238: Titan's thick haze layer sur le site de la NASA.</a></div>
PIA02238: Titan's thick haze layer
<h1>PIA07729: Looking on the Brightside of Titan</h1><div class="PIA07729" lang="en" style="width:610px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>As Cassini approached Titan on Aug. 21, 2005, it captured this natural color view of the moon's orange, global smog. Titan's hazy atmosphere was frustrating to NASA Voyager scientists during the first tantalizing Titan flybys 25 years ago, but now Titan's surface is being revealed by Cassini with startling clarity (see <a href="/catalog/PIA06222">PIA06222</a>).</p><p>Images taken with the wide-angle camera using red, green and blue spectral filters were combined to create this color view. The images were acquired at a distance of approximately 213,000 kilometers (132,000 miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 55 degrees. Resolution in the image is about 13 kilometers (8 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging 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/PIA07729" onclick="window.open(this.href); return false;" title="Voir l'image PIA07729: Looking on the Brightside of Titan sur le site de la NASA">Voir l'image PIA07729: Looking on the Brightside of Titan sur le site de la NASA.</a></div>
PIA07729: Looking on the Brightside of Titan
<h1>PIA10459: Far from Titan</h1><div class="PIA10459" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>In the distance beyond Saturn's icy rings, the Cassini spacecraft glimpses faint details on the surface of Titan. In the foreground, the B ring displays several dark spokes.</p><p>This view looks toward the sunlit side of the rings from about 5 degrees below the ringplane. </p><p>Titan is 5,150 kilometers (3,200 miles) across.</p><p>The image was taken with the Cassini spacecraft wide-angle camera on July 23, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 853 nanometers. Light at these wavelengths is able to reach the surface and escape back into space without being completely scattered by Titan's hazy atmosphere.</p><p>The view was obtained at a distance of approximately 1.1 million kilometers (698,000 miles) from Saturn and 2.4 million kilometers (1.5 million miles) from Titan. Image scale on the rings (in the radial, or outward from Saturn, direction) is 67 kilometers (39 miles) per pixel. Image scale is 142 kilometers (88 miles) per pixel on Titan.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10459" onclick="window.open(this.href); return false;" title="Voir l'image PIA10459: Far from Titan sur le site de la NASA">Voir l'image PIA10459: Far from Titan sur le site de la NASA.</a></div>
PIA10459: Far from Titan
<h1>PIA08945: Titan "T28" Mosaic</h1><div class="PIA08945" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Bright and dark terrains on Titan's trailing hemisphere are revealed by Cassini's Imaging Science Subsystem in this mosaic of images taken during the T28 flyby in April 2007.</p><p>The region shown in this image, centered on the northern part of Titan's trailing hemisphere (near 31.2 degrees North, 220.7 degrees West), had only been seen at very low resolution until February 2007, when Cassini flew over this area for the first time. This mosaic consists of images taken during one of a series of flybys in early 2007 designed to study this long unavailable part of Titan (5,150 kilometers, or 3,200 miles across).</p><p>Several intriguing surface features can be seen in this mosaic that warrant further study. Along the top of the mosaic is a series of dark lineaments, or linear features, that stand out against the blandness of the northern, mid-latitude terrain. These features were also observed by the RADAR instrument in December 2006 and represent an area of potential future co-analysis for the RADAR and camera teams. Another such region is the large bright area known as Adiri at bottom center, also imaged by RADAR in October 2005.</p><p>The mosaic shows a number of dark areas within Adiri that line up with small dune fields observed by RADAR. A portion of the dark terrain surrounding Adiri was also observed in 2005 by RADAR, and likewise was found to consist of large stretches of longitudinal dune fields -- further supporting the correlation between equatorial dark regions and dune "seas."</p><p>To the east of Adiri is a dark spot surrounded by a ring of bright material, which may be associated with an impact crater similar to Sinlap, discovered earlier in the Cassini mission (see <a href="/catalog/PIA06222">PIA6222</a>).</p><p>This mosaic consists of 29 separate frames using a total of 116 images. Each frame consists of three images, taken using a filter sensitive to near-infrared light centered at 938 nanometers, allowing for observations of Titan's surface and lower atmosphere, added together. An image taken using a filter sensitive to visible light centered at 619 nanometers was then subtracted from the product, effectively removing the lower atmosphere contribution to the brightness values in the image, increasing image contrast and improving the visibility of surface features.This process is also intended to reduce noise, but some camera artifacts still remain, such as a dark ring caused by dust in the camera system near the bottom right of each frame.</p><p>For a wide angle view taken during this Titan encounter, see <a href="/catalog/PIA08943">PIA8943</a>.</p><p>The images used for this mosaic were taken on April 11, 2007 from distances ranging from 106,000 to 180,000 kilometers (66,000 to 112,000 miles). This mosaic is in an orthographic projection with a pixel scale of 1.5 kilometers (0.9 miles) per pixel, although the size of resolvable features is likely several times larger, due to atmospheric scattering. An orthographic view is most like the view seen by a distant observer looking through a telescope.</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/PIA08945" onclick="window.open(this.href); return false;" title="Voir l'image PIA08945: Titan "T28" Mosaic sur le site de la NASA">Voir l'image PIA08945: Titan "T28" Mosaic sur le site de la NASA.</a></div>
PIA08945: Titan "T28" Mosaic
<h1>PIA07752: Naming New Lands - October Flyby (annotated)</h1><div class="PIA07752" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Like an ancient mariner charting the coastline of an unexplored wilderness, Cassini's repeated encounters with Titan are turning a mysterious world into a more familiar place.</p><p>During a Titan flyby on Oct. 28, 2005, the spacecraft's narrow-angle camera acquired multiple images that were combined to create the mosaic presented here. Provisional names applied to Titan's features are shown; an unannotated version of the mosaic is also available (see <a href="/catalog/PIA07754">PIA07754</a>).</p><p>The mosaic is a high resolution close-up of two contrasting regions: dark Shangri-La and bright Xanadu. This view has a resolution of 1 kilometer (0.6 mile) per pixel and is centered at 2.5 degrees north latitude, 145 degrees west longitude, near the feature called Santorini Facula. The mosaic is composed of 10 images obtained on Oct. 28, 2005, each processed to enhance surface detail. It is an orthographic projection, rotated so that north on Titan is up.</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</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/PIA07752" onclick="window.open(this.href); return false;" title="Voir l'image PIA07752: Naming New Lands - October Flyby (annotated) sur le site de la NASA">Voir l'image PIA07752: Naming New Lands - October Flyby (annotated) sur le site de la NASA.</a></div>
PIA07752: Naming New Lands - October Flyby (annotated)
<h1>PIA06112: Titan Close-up</h1><div class="PIA06112" lang="en" style="width:468px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Shown here is a blowup of a region of Titan imaged on July 2, 2004. This image was taken at a distance of 339,000 kilometers (210,600 miles) and shows brightness variations on the surface of Titan and a bright field of clouds near the south pole. The field of clouds is 450 kilometers (280 miles) across and is the about the size of Arizona. Features as small as 10 kilometers (6 miles) can be discerned. </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/PIA06112" onclick="window.open(this.href); return false;" title="Voir l'image PIA06112: Titan Close-up sur le site de la NASA">Voir l'image PIA06112: Titan Close-up sur le site de la NASA.</a></div>
PIA06112: Titan Close-up
<h1>PIA06160: Titan's Many Layers</h1><div class="PIA06160" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini has found Titan's upper atmosphere to consist of a surprising number of layers of haze, as shown in this ultraviolet image of Titan's night side limb, colorized to look like true color. The many fine haze layers extend several hundred kilometers above the surface. Although this is a night side view, with only a thin crescent receiving direct sunlight, the haze layers are bright from light scattered through the atmosphere. </p><p>The image was taken with the Cassini spacecraft narrow angle camera. About 12 distinct haze layers can be seen in this image, with a scale of 0.7 kilometers (.43 miles) per pixel. The limb shown here is at about 10 degrees south latitude, in the equatorial region.</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/PIA06160" onclick="window.open(this.href); return false;" title="Voir l'image PIA06160: Titan's Many Layers sur le site de la NASA">Voir l'image PIA06160: Titan's Many Layers sur le site de la NASA.</a></div>
PIA06160: Titan's Many Layers
<h1>PIA03555: Titan, a Geologically Dynamic World</h1><div class="PIA03555" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Synthetic aperture radar images obtained in February 2005 show that Titan's surface is modified by fluid flows and wind-driven deposits. Previous synthetic aperture radar images have shown features that may be cryovolcanic in origin, such as long flows (see <a href="/catalog/PIA06993">PIA06993</a>) and linear features that may have formed by tectonic processes (see <a href="/catalog/PIA06995">PIA06995</a>). </p><p>The latest data argue that Titan has a young and dynamic surface that is modified by all four major geologic processes: volcanism, tectonism, erosion, and impact cratering. All surfaces of solid bodies are shaped by these four processes, and Cassini-Huygens is revealing how each has contributed to the Titan we see today. </p><p>The data show a variety of surface drainage patterns that include twisting channels 1 to 2 kilometers-wide (0.6 to 1.2 miles) and up to 200-kilometers-long (124 miles). There is a well-developed drainage pattern associated with a large (450-kilometer, or 280 mile-diameter) basin that has eroded part of the basin's rim on the lower right of the image. These patters are in much larger scales than those imaged by the Huygens probe. </p><p>The most surprising new features revealed in the synthetic aperture images are dark lineated streaks, dubbed "cat scratches," which are seen in patches throughout the whole radar swath image (see <a href="/catalog/PIA07009">PIA07009</a>). The "scratches" are interpreted as linear/longitudinal dunes formed by wind transport. Radar images of terrestrial dunes, such as snow dunes in Antarctica, show remarkably similar patterns. Individual "scratches" are 500 meters to 1 kilometer (1,640 feet to 0.6 miles) across and spaced by 1 to 2 kilometer intervals (0.6 to 1.2-mile), straight or undulated, and oriented roughly east-west, suggesting a direction of prevalent winds. </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 radar instrument team is based at JPL, working with team members from the United States and several European countries.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA03555" onclick="window.open(this.href); return false;" title="Voir l'image PIA03555: Titan, a Geologically Dynamic World sur le site de la NASA">Voir l'image PIA03555: Titan, a Geologically Dynamic World sur le site de la NASA.</a></div>
PIA03555: Titan, a Geologically Dynamic World
<h1>PIA08868: Bands of Titan</h1><div class="PIA08868" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Titan bears a distinct east-west banded pattern in this Cassini spacecraft image taken in the ultraviolet.</p><p>The ultraviolet wavelength allows Cassini to see Titan's stratosphere, where superrotation--in which the atmosphere moves around the moon faster than Titan rotates -- is strong. The recent appearance of this feature may be a harbinger of seasonal change on Titan.</p><p>The moon's halo -- its detached, high-altitude global haze layer -- is visible here as well, and is often its most prominent feature in such ultraviolet views.</p><p>North on Titan (5,150 kilometers, 3,200 miles across) is up and rotated 6 degrees to the right in this image.</p><p>The view was obtained by the Cassini spacecraft narrow-angle camera using a spectral filter sensitive to wavelengths of polarized ultraviolet light. The view was acquired on Dec. 25, 2006 at a distance of approximately 1.3 million kilometers (800,000 miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 123 degrees. Image scale is 8 kilometers (5 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">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/PIA08868" onclick="window.open(this.href); return false;" title="Voir l'image PIA08868: Bands of Titan sur le site de la NASA">Voir l'image PIA08868: Bands of Titan sur le site de la NASA.</a></div>
PIA08868: Bands of Titan
<h1>PIA08930: Seeing Farther North</h1><div class="PIA08930" lang="en" style="width:733px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>High northern terrain on Titan is made visible by some image processing sleight of hand.</p><p>The view is the product of a ratio between Titan images taken using two different spectral filters. This process improves the visibility of surface features on Titan by removing the effect of shading from differing lighting angles. Features nearest the terminator (the line between night and day) receive the greatest improvement in terms of visibility.</p><p>In this particular frame, the process also makes visible features beyond the terminator. These features are illuminated by scattered light in the atmosphere, as during twilight on Earth. By this processing technique, surface features near the north pole can be viewed a full year-and-a-half before they are illuminated directly by the Sun.</p><p>In most processed views of Titan, this ratio procedure produces images that show only the surface, and indeed, most of the features visible here are on the ground. However, the high altitude haze layers in Titan's north polar region are darker in the shorter wavelength image used to create this special product. This difference in brightness results in the bright latitudinal band seen here. The banding in the north polar haze layers can be seen in <a href="/catalog/PIA08907">PIA08907</a>.</p><p>In the high north lie the large, dark features thought to be seas of liquid methane or ethane. Along the bottom of the image are Titan's equatorial dark regions, also thought to be seas -- but instead of liquid, they are seas of longitudinal dunes.</p><p>The view is toward terrain centered at 34 degrees north latitude on Titan (5,150 kilometers, or 3,200 miles across).</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on March 29, 2007 at a distance of approximately 1.5 million kilometers (900,000 miles) from Titan. Image scale is 9 kilometers (6 miles) per pixel. Due to scattering of light by Titan's hazy atmosphere, the sizes of surface features that can be resolved are a few times larger than the actual pixel scale.</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/PIA08930" onclick="window.open(this.href); return false;" title="Voir l'image PIA08930: Seeing Farther North sur le site de la NASA">Voir l'image PIA08930: Seeing Farther North sur le site de la NASA.</a></div>
PIA08930: Seeing Farther North
<h1>PIA08879: The Banded North</h1><div class="PIA08879" lang="en" style="width:704px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Looking toward high northern latitudes on Titan, the Cassini spacecraft spies a banded pattern encircling the pole. This sort of feature is what scientists expect to see in the stratosphere of Titan, where the atmosphere is superrotating, or moving around the moon faster than the moon itself rotates.</p><p>Titan is 5,150 kilometers (3,200 miles) across.</p><p>Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were taken by the Cassini spacecraft wide-angle camera on Jan. 28, 2007 at a distance of approximately 196,000 kilometers (122,000 miles) from Titan. Image scale is 12 kilometers (7 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08879" onclick="window.open(this.href); return false;" title="Voir l'image PIA08879: The Banded North sur le site de la NASA">Voir l'image PIA08879: The Banded North sur le site de la NASA.</a></div>
PIA08879: The Banded North
<h1>PIA06510: Titan's Polar Streak</h1><div class="PIA06510" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This image shows Titan, Saturn's largest moon (5,150 kilometers, or 3,200 miles, across), with a streak-like cloud near its south pole. The cloud may be part of a region of polar clouds seen during Cassini's first flyby of Titan in July 2004, only now covering a larger area.</p><p>Titan's atmosphere, like that of Earth, is mostly nitrogen. The pressure at Titan's surface is 50 percent higher than on Earth, despite its lower gravity, meaning that the mass of the atmosphere per unit area is more than ten times that on Earth.</p><p>The image was taken in visible light with the Cassini spacecraft narrow angle camera on Sept. 23, 2004, at a distance of 7.1 million kilometers (4.4 million miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 84 degrees. The image scale is 42 kilometers (26 miles) per pixel. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens 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/PIA06510" onclick="window.open(this.href); return false;" title="Voir l'image PIA06510: Titan's Polar Streak sur le site de la NASA">Voir l'image PIA06510: Titan's Polar Streak sur le site de la NASA.</a></div>
PIA06510: Titan's Polar Streak
<h1>PIA06434: Huygens Descent Sequence (Artist's Concept)</h1><div class="PIA06434" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><a href="/archive/PIA06434.mov"></a><b><br />Click on image for the<br />Huygens Descent Sequence animation</b></p>The artist's concept shows the European Space Agency's Huygens probe descent sequence. The animation shows the Huygens probe's entry, descent and landing, with the descent imager/spectral radiometer lamp turned on at the end.</p><p>The probe was delivered to Saturn's moon Titan by the Cassini spacecraft, which is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif. NASA supplied two instruments on the probe, the descent imager/spectral radiometer and the gas chromatograph mass spectrometer. </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. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06434" onclick="window.open(this.href); return false;" title="Voir l'image PIA06434: Huygens Descent Sequence (Artist's Concept) sur le site de la NASA">Voir l'image PIA06434: Huygens Descent Sequence (Artist's Concept) sur le site de la NASA.</a></div>
PIA06434: Huygens Descent Sequence (Artist's Concept)
<h1>PIA08928: Northern Bands</h1><div class="PIA08928" lang="en" style="width:291px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Titan's fast-rotating atmosphere creates circumpolar bands in the north.</p><p>The Cassini spacecraft acquired this view of the smoggy moon following a flyby of Titan (5,150 kilometers, or 3,200 miles across) on March 26, 2007.</p><p>The image was taken in visible violet light with the Cassini spacecraft wide-angle camera at a distance of approximately 275,000 kilometers (171,000 miles) from Titan. Image scale is 33 kilometers (20 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/PIA08928" onclick="window.open(this.href); return false;" title="Voir l'image PIA08928: Northern Bands sur le site de la NASA">Voir l'image PIA08928: Northern Bands sur le site de la NASA.</a></div>
PIA08928: Northern Bands
<h1>PIA09184: Titan Sea and Lake Superior</h1><div class="PIA09184" lang="en" style="width:604px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA09184_fig1.jpg"></a><br />Annotated Version</p><p>This side-by-side image shows a Cassini radar image (on the left) of what is the largest body of liquid ever found on Titan's north pole, compared to Lake Superior (on the right). This close-up is part of a larger image (see <a href="/catalog/PIA09182">PIA09182</a>) and offers strong evidence for seas on Titan. These seas are most likely liquid methane and ethane.</p><p>This feature on Titan is at least 100,000 square kilometers (39,000 square miles), which is greater in extent than Lake Superior (82,000 square kilometers or 32,000 square miles), which is one of Earth's largest lakes. The feature covers a greater fraction of Titan than the largest terrestrial inland sea, the Black Sea. The Black Sea covers 0.085 percent of the surface of the Earth; this newly observed body on Titan covers at least 0.12 percent of the surface of Titan. Because of its size, scientists are calling it a sea.</p><p>The image on the right is from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) project, NASA's Goddard Space Flight Center, Greenbelt, Md.</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 radar instrument was built by JPL and the Italian Space Agency, working with team members from the United States and several European countries. </p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09184" onclick="window.open(this.href); return false;" title="Voir l'image PIA09184: Titan Sea and Lake Superior sur le site de la NASA">Voir l'image PIA09184: Titan Sea and Lake Superior sur le site de la NASA.</a></div>
PIA09184: Titan Sea and Lake Superior
<h1>PIA10434: Polar Clouds on Titan</h1><div class="PIA10434" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Frigid Titan continues to prove itself a remarkably complex and dynamic world. Here, bright clouds are seen encircling the moon's north polar region. </p><p>The Cassini spacecraft has revealed the presence of great lakes and seas of liquid hydrocarbons on this part of Titan's surface (see <a href="/catalog/PIA08365">PIA08365</a> and <a href="/catalog/PIA08930">PIA08930</a>). An extended, high-altitude haze hovers above the limb of Titan (5,150 kilometers, or 3,200 miles across) at top of the image.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on April 26, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 938 nanometers. The view was acquired at a distance of approximately 786,000 kilometers (488,000 miles) from Titan. Image scale is 5 kilometers (3 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" class="external free" target="wpext">http://saturn.jpl.nasa.gov/</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org" class="external free" target="wpext">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10434" onclick="window.open(this.href); return false;" title="Voir l'image PIA10434: Polar Clouds on Titan sur le site de la NASA">Voir l'image PIA10434: Polar Clouds on Titan sur le site de la NASA.</a></div>
PIA10434: Polar Clouds on Titan