Galerie de photos de Téthys, satellite de la planète Saturne

<h1>PIA07557: Texture of Tethys</h1><div class="PIA07557" lang="en" style="width:541px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This richly textured look at Saturn's moon Tethys shows the huge crater Odysseus and its central mountain in relief, as well as many smaller impact sites. Vertical relief on solid solar system bodies is often most easily visible near the terminator (the line between day and night). Tethys is 1,071 kilometers (665 miles) across.</p><p>North on Tethys is up in this view. The lit portion of Tethys seen here is on the moon's leading hemisphere as it orbits Saturn.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 27, 2005, at a distance of approximately 490,000 kilometers (304,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 117 degrees. The image scale is 3 kilometers (2 miles) per pixel.</p><p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA07557" onclick="window.open(this.href); return false;" title="Voir l'image PIA07557: Texture of Tethys sur le site de la NASA">Voir l'image PIA07557: Texture of Tethys sur le site de la NASA.</a></div>
PIA07557: Texture of Tethys
<h1>PIA07560: Saturn and Tethys</h1><div class="PIA07560" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn poses with Tethys in this Cassini view. The C ring casts thin, string-like shadows on the northern hemisphere. Above that lurks the shadow of the much denser B ring. Cloud bands in the atmosphere are subtly visible in the south. Tethys is 1,071 kilometers (665 miles) across.</p><p>Cassini will perform a close flyby of Tethys on September 24, 2005.</p><p>The image was taken on June 10, 2005, in visible green light with the Cassini spacecraft wide-angle camera at a distance of approximately 1.4 million kilometers (900,000 miles) from Saturn. The image scale is 81 kilometers (50 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 http://saturn.jpl.nasa.gov . The Cassini imaging team homepage is at http://ciclops.org .</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA07560" onclick="window.open(this.href); return false;" title="Voir l'image PIA07560: Saturn and Tethys sur le site de la NASA">Voir l'image PIA07560: Saturn and Tethys sur le site de la NASA.</a></div>
PIA07560: Saturn and Tethys
<h1>PIA07569: Supreme Beauty</h1><div class="PIA07569" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Swirling cloud bands, delicate ring shadows and icy moons make the Saturn system a place of supreme natural beauty. Even Cassini's remarkable images can only provide the slightest sense of the experience of actually being there.</p><p>Tethys (at the right, 1,071 kilometers, or 665 miles across) and Mimas (near the center, 397 kilometers, or 247 miles across) are captured here against the planet's turbulent atmosphere.</p><p>Although the rings are only a thin strip from this angle, one can see the structure of the entire main ring system in its shadow on the planet -- from the C ring at the bottom to the faint specter of the F ring at the top.</p><p>The image was taken in visible violet light with the Cassini spacecraft wide-angle camera on July 16, 2005, at a distance of approximately 1.2 million kilometers (700,000 miles) from Saturn. The image scale is 66 kilometers (41 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/PIA07569" onclick="window.open(this.href); return false;" title="Voir l'image PIA07569: Supreme Beauty sur le site de la NASA">Voir l'image PIA07569: Supreme Beauty sur le site de la NASA.</a></div>
PIA07569: Supreme Beauty
<h1>PIA07571: With the Band</h1><div class="PIA07571" lang="en" style="width:370px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's moon Tethys displays its distinctive dark equatorial band here, along with two sizeable impact craters in the west. The larger crater to the north is Odysseus, which has a diameter (450 kilometers or 280 miles across) that is a substantial fraction of the moon's width. Tethys is 1,071 kilometers (665 miles) across.</p><p>Several moons in the outer solar system have large impact features like Odysseus, and scientists are interested in learning how such powerful impacts have altered the moons' surfaces.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 10, 2005, at a distance of approximately 1.8 million kilometers (1.1 million miles) from Tethys. The image scale is 11 kilometers (7 miles) per pixel. The image has been magnified by a factor of two to aid visibility. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a>. 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/PIA07571" onclick="window.open(this.href); return false;" title="Voir l'image PIA07571: With the Band sur le site de la NASA">Voir l'image PIA07571: With the Band sur le site de la NASA.</a></div>
PIA07571: With the Band
<h1>PIA07577: Tethys in the Dark</h1><div class="PIA07577" lang="en" style="width:369px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A close inspection of this image reveals that there is more of Saturn's moon Tethys here than is apparent at first glance. A slim crescent is all that is visible of the moon's sunlit side, but the left half of the image is dimly lit by "Saturnshine," or reflected light from the planet lying off to the left of Cassini's field of view. Tethys is 1,071 kilometers (665 miles) across.</p><p>On occasion, useful details about a moon's surface characteristics can be revealed under such dim illumination, as in <a href="/catalog/PIA06168">PIA06168</a>.</p><p>This view shows principally the Saturn-facing hemisphere of Tethys; north is up. Craters along the terminator, the boundary between day and night, are Penelope (at the top) and Antinous (at the bottom).</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Aug. 3, 2005. The spacecraft was approximately 842,000 kilometers (523,000 miles) from Tethys. The image was taken with a filter sensitive to wavelengths of polarized ultraviolet light centered at 338 nanometers from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 144 degrees. Image scale is 5 kilometers (3 miles) per pixel.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA07577" onclick="window.open(this.href); return false;" title="Voir l'image PIA07577: Tethys in the Dark sur le site de la NASA">Voir l'image PIA07577: Tethys in the Dark sur le site de la NASA.</a></div>
PIA07577: Tethys in the Dark
<h1>PIA07589: Profile of Odysseus</h1><div class="PIA07589" lang="en" style="width:271px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The profile of the 450-kilometer-wide (280-mile) crater Odysseus makes this image look as if someone sliced off a chunk of Tethys (1,071 kilometers, or 665 miles across). According to measurements made in Voyager images, the crater rim rises to about 5 kilometers (3 miles) above the surrounding terrain.</p><p>This view shows territory eastward of a previously released Cassini view that looked more directly into the giant impact basin (see <a href="/catalog/PIA07557">PIA07557</a>). The moon's equatorial dark band can be seen here as well.</p><p>This view shows principally the southern leading hemisphere of Tethys. North is up and rotated 10 degrees to the left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 31, 2005, at a distance of approximately 1.3 million kilometers (800,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 18 degrees. The 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</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/PIA07589" onclick="window.open(this.href); return false;" title="Voir l'image PIA07589: Profile of Odysseus sur le site de la NASA">Voir l'image PIA07589: Profile of Odysseus sur le site de la NASA.</a></div>
PIA07589: Profile of Odysseus
<h1>PIA07607: Gazing at Icy Canyons</h1><div class="PIA07607" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The dramatic Ithaca Chasma carves an enormous gash for more than 1,000 kilometers (620 miles) across Saturn's moon Tethys. Tethys is 1,071 kilometers (665 miles) across. Stretching across the top of this view are the B and A rings, separated by the Cassini Division.</p><p>Ithaca Chasma is on the moon's Saturn-facing hemisphere. North on Tethys is up and rotated 15 degrees to the left in this view.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 24, 2005, at a distance of approximately 2.2 million kilometers (1.3 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 87 degrees. The image scale is 13 kilometers (8 miles) per pixel. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</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/PIA07607" onclick="window.open(this.href); return false;" title="Voir l'image PIA07607: Gazing at Icy Canyons sur le site de la NASA">Voir l'image PIA07607: Gazing at Icy Canyons sur le site de la NASA.</a></div>
PIA07607: Gazing at Icy Canyons
<h1>PIA07617: Hue and Contrast</h1><div class="PIA07617" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This color view shows two of the largest craters on Saturn's icy moon Tethys: Odysseus in the northern hemisphere and Melanthius in the south. The moon's surface grows notably darker northward of the equator.</p><p>The horizontal stripes above the moon are the rings.</p><p>The view shows the side of Tethys (1,071 kilometers, or 665 miles across), which always faces away from Saturn. </p><p>Images taken using red, green and blue spectral filters were composited to create this color view. The images were taken with the Cassini spacecraft narrow-angle camera on Sept. 11, 2005, at a distance of approximately 2 million kilometers (1.2 million miles) from Tethys. The image scale is 12 kilometers (7 miles) per pixel on Tethys.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</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/PIA07617" onclick="window.open(this.href); return false;" title="Voir l'image PIA07617: Hue and Contrast sur le site de la NASA">Voir l'image PIA07617: Hue and Contrast sur le site de la NASA.</a></div>
PIA07617: Hue and Contrast
<h1>PIA07621: Tethys Meets Dione</h1><div class="PIA07621" lang="en" style="width:444px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This image shows Saturn's moon Tethys partially occulting the moon Dione. The difference in the surface brightness of the two moons is immediately apparent. </p><p>The diameter of Tethys is 1,071 kilometers (665 miles), while Dione is 1,126 kilometers (700 miles) across.</p><p>This still image was acquired on Sept. 16, 2005, at a distance of 2.1 million kilometers (1.3 million miles) from Dione and 2.7 million kilometers (1.7 million miles) from Tethys. Resolution in the original images was 13 kilometers (8 miles) per pixel on Dione and 16 kilometers (10 miles) per pixel on Tethys. The still image was magnified by a factor of two to aid visibility of surface features.</p><p>A brief movie of is also available (see <a href="/catalog/PIA07620">PIA07620</a>).</p><p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA07621" onclick="window.open(this.href); return false;" title="Voir l'image PIA07621: Tethys Meets Dione sur le site de la NASA">Voir l'image PIA07621: Tethys Meets Dione sur le site de la NASA.</a></div>
PIA07621: Tethys Meets Dione
<h1>PIA07622: Big Bangs on Tethys</h1><div class="PIA07622" lang="en" style="width:496px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini offers up this nice view of the craters Odysseus (at the top) and Melanthius (at the bottom) on Saturn's moon Tethys. Melanthius appears to have an elongated mountain range, rather than a single central peak, at its center.</p><p>This is the trailing hemisphere of Tethys, being centered on terrain at roughly 270 degrees longitude. North on Tethys is up. The diameter of Tethys is 1,071 kilometers (665 miles).</p><p>This image was taken with the Cassini spacecraft narrow-angle camera on Sept. 20, 2005, through a filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. This view was obtained at a distance of approximately 1.4 million kilometers (900,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 50 degrees. Resolution in the original image was 8 kilometers (5 miles) per pixel. The image has been magnified by a factor of two to aid visibility.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging 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/PIA07622" onclick="window.open(this.href); return false;" title="Voir l'image PIA07622: Big Bangs on Tethys sur le site de la NASA">Voir l'image PIA07622: Big Bangs on Tethys sur le site de la NASA.</a></div>
PIA07622: Big Bangs on Tethys
<h1>PIA07623: Moons with Separate Paths</h1><div class="PIA07623" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's expansive rings separate the moon's Tethys (at the top) from Dione (at the bottom). Even in this distant view, it is easy to see that the moons' surfaces, and likely their evolutionary histories, are very different.</p><p>Both moons are on the far side of the rings in this scene, which shows their Saturn-facing hemispheres (terrain centered on 0 degrees longitude). The dark shadow across the rings is cast by Saturn's southern hemisphere.</p><p>The diameter of Tethys is 1,071 kilometers (665 miles) and the diameter of Dione is 1,126 kilometers (700 miles).</p><p>This image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 12, 2005, at a distance of approximately 2.4 million kilometers (1.5 million miles) from Saturn. The image scale is about 17 kilometers (11 miles) per pixel on the two moons.</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/PIA07623" onclick="window.open(this.href); return false;" title="Voir l'image PIA07623: Moons with Separate Paths sur le site de la NASA">Voir l'image PIA07623: Moons with Separate Paths sur le site de la NASA.</a></div>
PIA07623: Moons with Separate Paths
<h1>PIA07640: Rough Sphere of Tethys</h1><div class="PIA07640" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Sun's rays strike the terrains near the terminator on Tethys at low angles, throwing features there into sharp relief. The cluster of peaks at the center of the crater Odysseus (450 kilometers, or 280 miles across) is particularly bold. Melanthius crater is seen here at bottom.</p><p>This view shows the anti-Saturn hemisphere on Tethys (1,071 kilometers, or 665 miles across). North is up and rotated 20 degrees to the left. Saturn's rings cut across the upper left portion of the scene.</p><p>The image was taken in visible green light with the Cassini narrow-angle camera on Oct. 13, 2005 at a distance of approximately 646,000 kilometers (401,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 109 degrees. The 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</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/PIA07640" onclick="window.open(this.href); return false;" title="Voir l'image PIA07640: Rough Sphere of Tethys sur le site de la NASA">Voir l'image PIA07640: Rough Sphere of Tethys sur le site de la NASA.</a></div>
PIA07640: Rough Sphere of Tethys
<h1>PIA07662: A Truly Grand Canyon</h1><div class="PIA07662" lang="en" style="width:441px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>A crescent Tethys shows off its great scar, Ithaca Chasma, for which the moon is renowned. The chasm is 100 kilometers (60 miles) across on average, and is 4 kilometers (2 miles) deep in places. </p></p>See <a href="/catalog/PIA07734">PIA07734</a> for a much closer view of the chasm taken during a Cassini flyby.</p></p>Ithaca Chasma is the most prominent sign of ancient geologic activity on Tethys (1,071 kilometers, or 665 miles across), whose surface is characterized principally by heavy cratering.</p></p>The lit surface visible here is on the moon's Saturn-facing hemisphere. North on Tethys is straight up.</p></p>The image was taken with the Cassini spacecraft narrow-angle camera on Nov. 28, 2005 using a filter sensitive to wavelengths of infrared light centered at 930 nanometers. The view was acquired at a distance of approximately 1.1 million kilometers (700,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 123 degrees. Resolution in the original image was 6 kilometers (4 miles) per pixel. The image has been magnified by a factor of two and contrast-enhanced to aid visibility.</p></p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging 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/PIA07662" onclick="window.open(this.href); return false;" title="Voir l'image PIA07662: A Truly Grand Canyon sur le site de la NASA">Voir l'image PIA07662: A Truly Grand Canyon sur le site de la NASA.</a></div>
PIA07662: A Truly Grand Canyon
<h1>PIA07664: Envious Tethys</h1><div class="PIA07664" lang="en" style="width:481px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft captures this dual portrait of an apparently dead moon and one that is very much alive. Tethys, in the foreground, shows no signs of recent geologic activity. Enceladus, however, is covered in fractures and faults -- near its south pole in particular -- and spews icy particles into space from active vents.</p><p>Tethys' giant crater Odysseus lurks in the dark just west of the terminator. North on the moons is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Nov. 29, 2005 at a distance of approximately 970,000 kilometers (600,000 miles) from Tethys (1,071 kilometers, or 665 miles across) and at a Sun-Tethys-spacecraft, or phase, angle of 122 degrees. Cassini was then 1.1 million kilometers (700,000 miles) from Enceladus (505 kilometers, or 314 miles across). Image scale is 6 kilometers (4 miles) per pixel on Tethys (at left) and 7 kilometers (4 miles) per pixel on Enceladus (at right).</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/PIA07664" onclick="window.open(this.href); return false;" title="Voir l'image PIA07664: Envious Tethys sur le site de la NASA">Voir l'image PIA07664: Envious Tethys sur le site de la NASA.</a></div>
PIA07664: Envious Tethys
<h1>PIA07667: Adrift at Saturn</h1><div class="PIA07667" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Tethys floats before the massive, golden-hued globe of Saturn in this natural color view. The thin, dark line of the rings curves around the horizon at top.</p></p>Visible on Tethys (1,071 kilometers, or 665 miles across) are the craters Odysseus (top) and Melanthius (bottom). The view looks toward the anti-Saturn side of Tethys.</p></p>Images taken using red, green and blue spectral filters were combined to create this color view. Tethys is apparently darker than Saturn at these wavelengths. The edge of the planet appears fuzzy, which may indicate that we are seeing haze layers that are separated from the main cloud deck. </p></p>The images were acquired by the Cassini spacecraft narrow-angle camera on Dec. 3, 2005, at a distance of approximately 2.5 million kilometers (1.6 million miles) from Saturn. The image scale is 15 kilometers (9 miles) per pixel on Saturn and 13 kilometers (8 miles) per pixel on Tethys.</p></p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</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/PIA07667" onclick="window.open(this.href); return false;" title="Voir l'image PIA07667: Adrift at Saturn sur le site de la NASA">Voir l'image PIA07667: Adrift at Saturn sur le site de la NASA.</a></div>
PIA07667: Adrift at Saturn
<h1>PIA07682: Speck of a Moon</h1><div class="PIA07682" 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 contains not one, but two moons. Tethys is slightly overexposed so that the real target of this image, tiny Atlas, can be seen. Atlas is at image center, just outside the A ring.</p><p>A couple of faint ringlets are visible in the Encke Gap, right of center.</p><p>Tethys is 1,071 kilometers (665 miles) wide; Atlas is a mere 32 kilometers (20 miles) wide.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 21, 2005, at a distance of approximately 2 million kilometers (1.2 million miles) from Tethys and 1.7 million kilometers (1.1 million miles) from Atlas. The image scale is 12 kilometers (7 miles) per pixel on Tethys.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</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/PIA07682" onclick="window.open(this.href); return false;" title="Voir l'image PIA07682: Speck of a Moon sur le site de la NASA">Voir l'image PIA07682: Speck of a Moon sur le site de la NASA.</a></div>
PIA07682: Speck of a Moon
<h1>PIA07693: The Great Basin</h1><div class="PIA07693" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Plunging cliffs and towering mountains characterize the gigantic impact structure called Odysseus on Saturn's moon Tethys. The great impact basin lies before the Cassini spacecraft in one of the best views yet obtained.</p><p>Quite a few small craters are visible inside Odysseus (450 kilometers, or 280 miles across), making it clear that this is not a very young structure. However, a comparison of cratering density between the interior of Odysseus and the surrounding terrain should show whether the large basin is at least relatively young.</p><p>Odysseus is on the leading hemisphere of Tethys (1,071 kilometers, or 665 miles across). North is up and rotated 18 degrees to the right.</p><p>The image was taken in polarized ultraviolet light with the Cassini spacecraft narrow-angle camera on Dec. 24, 2005 at a distance of approximately 196,000 kilometers (122,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 85 degrees. Resolution in the original image was 1 kilometer (3,831 feet) per pixel. The image has been magnified by a factor of two and contrast-enhanced to aid visibility.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging 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/PIA07693" onclick="window.open(this.href); return false;" title="Voir l'image PIA07693: The Great Basin sur le site de la NASA">Voir l'image PIA07693: The Great Basin sur le site de la NASA.</a></div>
PIA07693: The Great Basin
<h1>PIA07698: Grim Tethys</h1><div class="PIA07698" lang="en" style="width:744px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The profile of Ithaca Chasma forms a great scar in the icy crescent of Tethys. The chasm stretches more than 1,000 kilometers (620 miles) over Tethys' surface, from north to south.</p><p>Tethys is 1,071 kilometers (665 miles) wide.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 25, 2005 at a distance of approximately 313,000 kilometers (195,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 151 degrees. Image scale is 2 kilometers (1 mile) per pixel. North on Tethys is up in this view.</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/PIA07698" onclick="window.open(this.href); return false;" title="Voir l'image PIA07698: Grim Tethys sur le site de la NASA">Voir l'image PIA07698: Grim Tethys sur le site de la NASA.</a></div>
PIA07698: Grim Tethys
<h1>PIA07705: Tethys and Titan</h1><div class="PIA07705" lang="en" style="width:750px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini looks toward Tethys and its great crater Odysseus, while at the same time capturing veiled Titan in the distance (at left).</p><p>Titan (5,150 kilometers, or 3,200 miles across) is shrouded in a thick, smog-like atmosphere in which many small, potential impactors burn up before hitting the moon's surface. Crater-pocked Tethys (1,071 kilometers, or 665 miles across) has no such protective layer, although even a thick blanket of atmosphere would have done little good against the impactor that created Odysseus.</p><p>The eastern limb of Tethys is overexposed in this view.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 6, 2006, at a distance of approximately 4 million kilometers (2.5 million miles) from Titan and 2.7 million kilometers (1.7 million miles) from Tethys. The image scale is 25 kilometers (16 miles) per pixel on Titan and 16 kilometers (10 miles) per pixel on Tethys.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA07705" onclick="window.open(this.href); return false;" title="Voir l'image PIA07705: Tethys and Titan sur le site de la NASA">Voir l'image PIA07705: Tethys and Titan sur le site de la NASA.</a></div>
PIA07705: Tethys and Titan
<h1>PIA07734: Steep Scarps</h1><div class="PIA07734" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view of the surface of Saturn's moon Tethys, taken during Cassini's close approach to the moon on Sept. 24, 2005, reveals an icy land of steep cliffs. The view is of the southernmost extent of Ithaca Chasma, in a region not seen by NASA's Voyager spacecraft.</p><p>The ridges around Ithaca Chasma have been thoroughly hammered by impacts. This appearance suggests that Ithaca Chasma as a whole is very old.</p><p>There is brighter material in the floors of many craters on Tethys. That's the opposite situation from Saturn's oddly tumbling moon Hyperion, where dark material is concentrated in the bottoms of many craters.</p><p>This view is centered on terrain at approximately 2.5 degrees south latitude and 352 degrees west longitude on Tethys. North on Tethys is toward the right in this view.</p><p>This clear filter view was obtained using the Cassini spacecraft narrow-angle camera at a distance of approximately 32,300 kilometers (20,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 20 degrees. Image scale is 190 meters (620 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</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/PIA07734" onclick="window.open(this.href); return false;" title="Voir l'image PIA07734: Steep Scarps sur le site de la NASA">Voir l'image PIA07734: Steep Scarps sur le site de la NASA.</a></div>
PIA07734: Steep Scarps
<h1>PIA07735: Old Northern Terrains</h1><div class="PIA07735" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The northern polar region of Saturn's moon Tethys seen in this Cassini flyby image is a ponderously ancient surface.</p><p>Above the prominent peaked crater Telemachus are the remnants of a very old crater (at the 10 o'clock position relative to Telemachus) named Teiresias. The ancient impact site is so badly overprinted and eroded by impact weathering and degradation that all that remains is a circular pattern of hummocks that mark where the old crater rim existed.</p><p>This view is centered on terrain at approximately 1.2 degrees south latitude and 342 degrees west longitude on Tethys. The view is rotated so that north is about 40 degrees to the right.</p><p>This clear filter view was taken during Cassini's close approach to Tethys on Sept. 24, 2005. The image was acquired using the Cassini spacecraft narrow-angle camera at a distance of approximately 69,200 kilometers (43,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 21 degrees. Image scale is 410 meters (1,350 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</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/PIA07735" onclick="window.open(this.href); return false;" title="Voir l'image PIA07735: Old Northern Terrains sur le site de la NASA">Voir l'image PIA07735: Old Northern Terrains sur le site de la NASA.</a></div>
PIA07735: Old Northern Terrains
<h1>PIA07736: "Hi-Res" on Tethys</h1><div class="PIA07736" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view is among the closest Cassini images of Tethys' icy surface taken during the Sept. 24, 2005 flyby.</p><p>This image is a clear-filter view and is the highest resolution image acquired by Cassini during the encounter. The two large craters at the right show evidence that landslides have modified their outlines and covered their floors with large quantities of debris. Linear depressions cutting across the terrain probably mark the surface expressions of faults or fractures. For a false-color image see <a href="/catalog/PIA07737">PIA07737</a>. </p><p>This view is centered on terrain at approximately 4.2 degrees south latitude and 357 degrees west longitude on Tethys. The image has been rotated so that north on Tethys is up.</p><p>The view was obtained using the Cassini spacecraft narrow-angle camera at a distance of approximately 19,000 kilometers (11,800 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 17 degrees. Image scale is 110 meters (360 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</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/PIA07736" onclick="window.open(this.href); return false;" title="Voir l'image PIA07736: "Hi-Res" on Tethys sur le site de la NASA">Voir l'image PIA07736: "Hi-Res" on Tethys sur le site de la NASA.</a></div>
PIA07736: "Hi-Res" on Tethys
<h1>PIA07737: "Hi-Res" on Tethys - False Color</h1><div class="PIA07737" lang="en" style="width:494px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view is among the closest Cassini images of Tethys' icy surface taken during the Sept. 24, 2005 flyby.</p><p>This false-color image, created with infrared, green and ultraviolet frames, reveals a wide variety of surface colors across this terrain. The presence of this variety at such small scales may indicate a mixture of different surface materials. Tethys was previously known to have color differences on its surface, especially on its trailing side, but this kind of color diversity is new to imaging scientists. For a clear-filter view of this terrain, see <a href="/catalog/PIA07736">PIA07736</a>.</p><p>This view is centered on terrain at approximately 4.2 degrees south latitude and 357 degrees west longitude on Tethys. The view has been rotated so that north on Tethys is up.</p><p>The images for this view were obtained using the Cassini spacecraft narrow-angle camera at distances ranging from approximately 18,400 to 19,000 kilometers (11,400 to 11,800 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 17 degrees. Image scale is 213 meters (700 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</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/PIA07737" onclick="window.open(this.href); return false;" title="Voir l'image PIA07737: "Hi-Res" on Tethys - False Color sur le site de la NASA">Voir l'image PIA07737: "Hi-Res" on Tethys - False Color sur le site de la NASA.</a></div>
PIA07737: "Hi-Res" on Tethys - False Color
<h1>PIA07738: Tethys in Full View</h1><div class="PIA07738" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>With this full-disk mosaic, Cassini presents the best view yet of the south pole of Saturn's moon Tethys. </p><p>The giant rift Ithaca Chasma cuts across the disk. Much of the topography seen here, including that of Ithaca Chasma, has a soft, muted appearance. It is clearly very old and has been heavily bombarded by impacts over time.</p><p>Many of the fresh-appearing craters (ones with crisp relief) exhibit unusually bright crater floors. The origin of the apparent brightness (or "albedo") contrast is not known. It is possible that impacts punched through to a brighter layer underneath, or perhaps it is brighter because of different grain sizes or textures of the crater floor material in comparison to material along the crater walls and surrounding surface.</p><p>The moon's high southern latitudes, seen here at the bottom, were not imaged by NASA's Voyager spacecraft during their flybys of Tethys 25 years ago.</p><p>The mosaic is composed of nine images taken during Cassini's close flyby of Tethys (1,071 kilometers, or 665 miles across) on Sept. 24, 2005, during which the spacecraft passed approximately 1,500 kilometers (930 miles) above the moon's surface.</p><p>This view is centered on terrain at approximately 1.2 degrees south latitude and 342 degrees west longitude on Tethys. It has been rotated so that north is up.</p><p>The clear filter images in this mosaic were taken with the Cassini spacecraft narrow-angle camera at distances ranging from 71,600 kilometers (44,500 miles) to 62,400 kilometers (38,800 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 21 degrees. The image scale is 370 meters (1,200 feet) per pixel. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging 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>. 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/PIA07738" onclick="window.open(this.href); return false;" title="Voir l'image PIA07738: Tethys in Full View sur le site de la NASA">Voir l'image PIA07738: Tethys in Full View sur le site de la NASA.</a></div>
PIA07738: Tethys in Full View
<h1>PIA08124: Saturnian Specters</h1><div class="PIA08124" lang="en" style="width:771px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Ghostly details make this dark scene more than just a beautiful grouping of two Saturn moons, with Tethys on the left and Titan on the right. In Titan's thick and inflated atmosphere, the detached high haze layer can be seen, as well as the complex northern polar hood (at the top). Images like this one can help scientists make definitive estimates of the altitudes to which the high haze extends.</p><p>The faint vertical banded pattern is a type of noise that usually is removed during image processing. Because this image was processed to enhance the visibility of details in Titan's atmosphere and the faint G ring, the vertical noise was also enhanced.</p><p>Titan is Saturn's largest moon, at 5,150 kilometers (3,200 miles) across. Tethys is 1,071 kilometers (665 miles) across.</p><p>This view was obtained in visible light with the Cassini spacecraft narrow-angle camera on Jan. 19, 2006, at a distance of approximately 2.4 million kilometers (1.5 million miles) from Titan and 1 million kilometers (600,000 miles) from Tethys. The image scale is 14 kilometers (9 miles) per pixel on Titan and 6 kilometers (4 miles) per pixel on Tethys.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08124" onclick="window.open(this.href); return false;" title="Voir l'image PIA08124: Saturnian Specters sur le site de la NASA">Voir l'image PIA08124: Saturnian Specters sur le site de la NASA.</a></div>
PIA08124: Saturnian Specters
<h1>PIA08149: Penelope Crater</h1><div class="PIA08149" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This dramatic close-up of Tethys shows the large crater Penelope lying near center, overprinted by many smaller, younger impact sites. </p><p>Three smaller impact features of roughly similar size make a line left of Penelope that runs north-south: (from bottom) Ajax, Polyphemus and Phemius.</p><p>Features on Tethys are named for characters and places from "The Iliad" and "The Odyssey." The largest impact structure on Tethys is named Odysseus. (See <a href="/catalog/PIA07693">PIA07693</a> for a stunning close-up of Odysseus.)</p><p>The view is toward the Saturn-facing hemisphere on Tethys (1,071 kilometers, or 665 miles across). North is up.</p><p>The image was taken in polarized ultraviolet light with the Cassini spacecraft narrow-angle camera on Feb. 25, 2006 at a distance of approximately 165,000 kilometers (103,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 23 degrees. Image scale is 984 meters (3,227 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/PIA08149" onclick="window.open(this.href); return false;" title="Voir l'image PIA08149: Penelope Crater sur le site de la NASA">Voir l'image PIA08149: Penelope Crater sur le site de la NASA.</a></div>
PIA08149: Penelope Crater
<h1>PIA08185: Cratered Crescent</h1><div class="PIA08185" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Quiet and cold, a crescent Tethys floats above the nearly edge-on rings of Saturn. The only surface features visible on Tethys (1,071 kilometers, or 665 miles across) from this distance are a few impact craters.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 22, 2006, at a distance of approximately 3 million kilometers (1.8 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 115 degrees. The image scale is 18 kilometers (11 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/PIA08185" onclick="window.open(this.href); return false;" title="Voir l'image PIA08185: Cratered Crescent sur le site de la NASA">Voir l'image PIA08185: Cratered Crescent sur le site de la NASA.</a></div>
PIA08185: Cratered Crescent
<h1>PIA08205: Torn-up Terrain</h1><div class="PIA08205" lang="en" style="width:374px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Ithaca Chasma rips across the cratered surface of Tethys, creating a scar more than 1,000 kilometers (600 miles) long, from north to south.</p><p>Cassini got a closer look at this ancient rift during a Sept. 2005 flyby of Tethys (1,071 kilometers, or 665 miles across). See <a href="/catalog/PIA07734">PIA07734</a> for a high-resolution view of the chasm.</p><p>This view shows the Saturn-facing side of Tethys. North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 21, 2006 at a distance of approximately 715,000 kilometers (444,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 48 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/PIA08205" onclick="window.open(this.href); return false;" title="Voir l'image PIA08205: Torn-up Terrain sur le site de la NASA">Voir l'image PIA08205: Torn-up Terrain sur le site de la NASA.</a></div>
PIA08205: Torn-up Terrain
<h1>PIA08251: Tethys Is Gorges</h1><div class="PIA08251" lang="en" style="width:328px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The ancient gorge of Ithaca Chasma carves a path across Tethys and continues out of sight over the moon's limb. This great rift is a system of canyons that is 100 kilometers (60 miles) across on average, is 4 kilometers (2 miles) deep in places, and can be traced more than 1,000 kilometers (620 miles) over Tethys' surface, from north to south. </p><p>This view also shows the belt of darkened material that Tethys (1,071 kilometers, or 665 miles across) wears prominently on its leading hemisphere. North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 23, 2006 at a distance of approximately 795,000 kilometers (494,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 99 degrees. 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">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/PIA08251" onclick="window.open(this.href); return false;" title="Voir l'image PIA08251: Tethys Is Gorges sur le site de la NASA">Voir l'image PIA08251: Tethys Is Gorges sur le site de la NASA.</a></div>
PIA08251: Tethys Is Gorges
<h1>PIA08254: Toward Melanthius</h1><div class="PIA08254" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini looks into the 245-kilometer (150-mile) wide crater Melanthius in this view of the southern terrain on Tethys. The crater possesses a prominent cluster of peaks in its center which are relics of its formation.</p><p>Notable here is a distinct boundary in crater abundance -- the cratering density is much higher in the farthest western terrain (left side of the image) than elsewhere.</p><p>North on Tethys (1,071 kilometers, or 665 miles across) is up and rotated 45 degrees to the left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 23, 2006 at a distance of approximately 120,000 kilometers (75,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 29 degrees. Image scale is 715 meters (2,345 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/PIA08254" onclick="window.open(this.href); return false;" title="Voir l'image PIA08254: Toward Melanthius sur le site de la NASA">Voir l'image PIA08254: Toward Melanthius sur le site de la NASA.</a></div>
PIA08254: Toward Melanthius