Galerie de photos de Téthys, satellite de la planète Saturne

<h1>PIA08284: Transition on Tethys</h1><div class="PIA08284" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>An extreme false-color view of Tethys reveals a surface detail not visible in a monochrome view taken at the same time.</p><p>The false-color view shows a color transition from the moon's Saturn-facing side (at left) to a region its trailing side (at bottom).</p><p>Near the top of the images, the central-peaked crater Telemachus lies in the deeply grooved terrain that marks the northern reaches of Ithaca Chasma.</p><p>To create the false-color view, ultraviolet, green and infrared images were combined into a single picture that isolates and maps regional color differences. This "color map" was then superposed over a clear-filter image that preserves the relative brightness across the body.</p><p>The combination of color map and brightness image shows how colors vary across Tethys' surface. The origin of the color differences is not yet understood, but may be caused by subtle differences in the surface composition or the sizes of grains making up the icy surface material.</p><p>The monochrome image was taken using a clear filter.</p><p>North on Tethys (1,071 kilometers, or 665 miles across) is up and rotated 36 degrees to the right.</p><p>The images used to create this view were acquired using the Cassini spacecraft narrow-angle camera on Sept. 9, 2006 at a distance of approximately 221,000 kilometers (137,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 52 degrees. Image scale is 1 kilometer (4,332 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/PIA08284" onclick="window.open(this.href); return false;" title="Voir l'image PIA08284: Transition on Tethys sur le site de la NASA">Voir l'image PIA08284: Transition on Tethys sur le site de la NASA.</a></div>
PIA08284: Transition on Tethys
<h1>PIA08291: Target: Tethys</h1><div class="PIA08291" lang="en" style="width:554px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Tethys has a crater-saturated surface, where older, larger basins have been completely overprinted by newer, smaller impacts. This state is what scientists expect to see on a very old surface, where small impactors have struck more frequently than larger ones over several billion years. Larger impacts were more common events in the early history of the solar system.</p><p>This view looks toward the leading hemisphere of Tethys (1,071 kilometers, or 665 miles across). North is up. The great scar of Ithaca Chasma is seen at right.</p><p>The view was captured in visible light with the Cassini spacecraft narrow-angle camera on Sept. 25, 2006 at a distance of approximately 449,000 kilometers (279,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 49 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08291" onclick="window.open(this.href); return false;" title="Voir l'image PIA08291: Target: Tethys sur le site de la NASA">Voir l'image PIA08291: Target: Tethys sur le site de la NASA.</a></div>
PIA08291: Target: Tethys
<h1>PIA08400: The Crown of Tethys</h1><div class="PIA08400" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The vast expanse of the crater Odysseus spreads out below Cassini in this mosaic view of Saturn's moon Tethys.</p><p>The crater (450 kilometers or 280 miles across) is a remarkably well-preserved example of an ancient multi-ringed impact basin: The outer ring is defined by steep, cliff-like walls that descend to generally broad internal terraces. The inner ring is formed by a prominent, crown-shaped, 140-kilometer (88-mile) diameter circular band of icy mountains. Multi-ring basins are seen on rocky bodies as well as icy ones.</p><p>The complex internal structure and multi-ringed nature of these very large basins are believed to arise from the rebound of intense shock waves that penetrated the body at the time of impact.</p><p>Tethys is 1,071 kilometers (665 miles) across.</p><p>This mosaic was assembled from four clear filter, narrow-angle camera images. The view is an orthographic projection centered on 3 degrees south latitude, 119 degrees west longitude and has a resolution of 572 meters (0.35 mile) per pixel. An orthographic view is most like the view seen by a distant observer looking through a telescope. North is up.</p><p>The view was obtained by the Cassini spacecraft on Aug. 30, 2007, from a distance of approximately 97,000 kilometers (60,000 miles) and at a sun-Tethys-spacecraft, or phase, angle of 51 degrees.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08400" onclick="window.open(this.href); return false;" title="Voir l'image PIA08400: The Crown of Tethys sur le site de la NASA">Voir l'image PIA08400: The Crown of Tethys sur le site de la NASA.</a></div>
PIA08400: The Crown of Tethys
<h1>PIA08401: Frosty Scallops</h1><div class="PIA08401" lang="en" style="width:654px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The cold, cratered landscape of Saturn's moon Tethys shines in stark relief in this crescent view.</p><p>Aside from its obvious aesthetic beauty, this particular Cassini mosaic was obtained mainly to understand important details about how the surface of Tethys (1,071 kilometers, or 665 miles across) reflects light at high phase angles (the sun-Tethys-spacecraft viewing angle). The beautiful interplay of light with surface topographic features is an important factor in this regard. The surface is heavily cratered, and at this oblique angle the craters give the surface a highly scalloped appearance.</p><p>Unlike some high-resolution crescent views of Saturn's moons, this image truly gives Tethys the appearance of being composed of ice and frost. There appear to be numerous sun glints sparkling across the surface. Some of these might be specular (or mirror-like) reflections off of exposed walls of solid ice inside craters, or they might be uniformly large, frosty or icy-particle covered facets of topography that are so oriented as to give exceptionally bright but diffuse reflections.</p><p>The shadows cast by most craters in the scene are not dark, but rather, they are illuminated by light bouncing off of their sunlit walls and those of other craters. This light, which has been scattered multiple times, makes visible some details along the shadowed walls and floors of craters that would not otherwise be visible in this viewing geometry.</p><p>This mosaic was assembled from four clear filter, narrow-angle camera images, with low resolution, wide-angle camera data filling a small gap in coverage. The view is an orthographic projection and has a resolution of 211 meters (692 feet) per pixel. An orthographic view is most like the view seen by a distant observer looking through a telescope. North is up.</p><p>The view was obtained by the Cassini spacecraft on June 29, 2007, from a distance of approximately 38,000 kilometers (24,000 miles) and at a Sun-Tethys-spacecraft, or phase, angle of 152 degrees. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08401" onclick="window.open(this.href); return false;" title="Voir l'image PIA08401: Frosty Scallops sur le site de la NASA">Voir l'image PIA08401: Frosty Scallops sur le site de la NASA.</a></div>
PIA08401: Frosty Scallops
<h1>PIA08820: Cratered Crescent</h1><div class="PIA08820" lang="en" style="width:378px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft surveys the ancient, craggy surface of Tethys, sighting the crater Telemachus with its prominent central peak.</p><p>The view is toward the north pole of Tethys (1,071 kilometers, or 665 miles across). Lit terrain seen here is on the moon's Saturn-facing side.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 29, 2006 at a distance of approximately 641,000 kilometers (398,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 111 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/PIA08820" onclick="window.open(this.href); return false;" title="Voir l'image PIA08820: Cratered Crescent sur le site de la NASA">Voir l'image PIA08820: Cratered Crescent sur le site de la NASA.</a></div>
PIA08820: Cratered Crescent
<h1>PIA08870: Odysseus on the Edge</h1><div class="PIA08870" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA08870_fig1.tif"></a><br />Click on the image for full resolution<br />False Color View of Exposing Tethys' Surface</p><p>These side-by-side natural color and false-color views show cratered terrain on the anti-Saturn hemisphere of Tethys -- the side that always faces away from Saturn.</p><p>The rim of the immense impact basin of Odysseus (450 kilometers or 280 miles across) lies on the eastern limb, at the 2 o'clock position, making the limb there appear flatter than elsewhere. Other large craters seen here are Penelope (left of center) and Melanthius (below center).</p><p>The region between Penelope and Odysseus has not previously been imaged at such high resolution before.</p><p>The natural color view was created by compositing images taken using red, green and blue spectral filters.</p><p>To create the false-color view, ultraviolet, green and infrared images were combined into a single picture that isolates and maps regional color differences. This "color map" was then superimposed over a clear-filter image that preserves the relative brightness across the body.</p><p>The combination of color map and brightness image shows how colors vary across the surface of Tethys. The origin of the color differences is not yet understood, but may be caused by subtle differences in the surface composition or the sizes of grains making up the icy surface material.</p><p>North on Tethys (1,071 kilometers, or 665 miles across) is up.</p><p>The images were taken with the Cassini spacecraft narrow-angle camera on Dec. 31, 2006 at a distance of approximately 414,000 kilometers (257,000 miles) from Tethys. Image scale is 2 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/PIA08870" onclick="window.open(this.href); return false;" title="Voir l'image PIA08870: Odysseus on the Edge sur le site de la NASA">Voir l'image PIA08870: Odysseus on the Edge sur le site de la NASA.</a></div>
PIA08870: Odysseus on the Edge
<h1>PIA08884: Odysseus Out of Shadow</h1><div class="PIA08884" lang="en" style="width:254px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft stares directly into the great Odysseus impact basin on Tethys. Peaks near the crater's center cast long shadows toward the east. The elevated eastern rim of the crater catches sunlight, despite being well beyond the terminator.</p><p>See <a href="/catalog/PIA07693">PIA07693</a> for a highly detailed view of Odysseus.</p><p>Lit terrain seen here is on the anti-Saturn hemisphere of Tethys (1,071 kilometers, or 665 miles across) -- the side that always faces away from Saturn. North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 19, 2007 at a distance of approximately 1.1 million kilometers (700,000 miles) from Tethys. Image scale is 7 kilometers (4 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/PIA08884" onclick="window.open(this.href); return false;" title="Voir l'image PIA08884: Odysseus Out of Shadow sur le site de la NASA">Voir l'image PIA08884: Odysseus Out of Shadow sur le site de la NASA.</a></div>
PIA08884: Odysseus Out of Shadow
<h1>PIA08913: Odysseus Into the Dark</h1><div class="PIA08913" lang="en" style="width:209px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Odysseus impact basin lies between night and day on Tethys.</p><p>Lit terrain seen here is on the anti-Saturn side of Tethys (1,071 kilometers, or 665 miles across), or the side that always faces away from Saturn as the moon orbits the planet. North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 26, 2007 at a distance of approximately 1.5 million kilometers (1 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 96 degrees. Image scale is 9 kilometers (6 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/PIA08913" onclick="window.open(this.href); return false;" title="Voir l'image PIA08913: Odysseus Into the Dark sur le site de la NASA">Voir l'image PIA08913: Odysseus Into the Dark sur le site de la NASA.</a></div>
PIA08913: Odysseus Into the Dark
<h1>PIA08967: All Craters Great and Small</h1><div class="PIA08967" lang="en" style="width:494px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft surveys the battered surface of icy Tethys. The great impact basin straddling the terminator is itself overprinted by many smaller impact sites.</p><p>The view in this image is toward the southern hemisphere on the moon's Saturn-facing side. North on Tethys (1,071 kilometers, or 665 miles across) is up and rotated 7 degrees to the right.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 11, 2007. The view was obtained at a distance of approximately 559,000 kilometers (347,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 60 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08967" onclick="window.open(this.href); return false;" title="Voir l'image PIA08967: All Craters Great and Small sur le site de la NASA">Voir l'image PIA08967: All Craters Great and Small sur le site de la NASA.</a></div>
PIA08967: All Craters Great and Small
<h1>PIA08974: Band Becomes Bright</h1><div class="PIA08974" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Ithaca Chasma rips across Tethys from north to south near the center of this view. The moon's western limb is flattened, indicating the rim of the giant impact basin Odysseus.</p><p>The dark, east-west trending band often observed in this region (see <a href="/catalog/PIA07571">PIA07571</a>) is just visible here, but its contrast is reversed at these short, ultraviolet wavelengths -- it is bright against the already bright terrain.</p><p>North on Tethys (1,071 kilometers, or 665 miles across) is up and rotated 24 degrees to the left. This view looks toward the moon's Saturn-facing hemisphere.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on May 27, 2007 using a combination of spectral filters sensitive to wavelengths of light centered at 298 and 338 nanometers. The view was obtained at a distance of approximately 267,000 kilometers (166,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 13 degrees. Image scale is 2 kilometers (5,236 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/PIA08974" onclick="window.open(this.href); return false;" title="Voir l'image PIA08974: Band Becomes Bright sur le site de la NASA">Voir l'image PIA08974: Band Becomes Bright sur le site de la NASA.</a></div>
PIA08974: Band Becomes Bright
<h1>PIA09008: Cassini Scores a Triple</h1><div class="PIA09008" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft’s views from edge-on with the rings are perfect for capturing multiple Saturnian moons grouped closely.</p><p>Here Tethys (1,071 kilometers, or 665 miles across), with its enormous crater Odysseus, is partly overexposed near upper right. At left, Epimetheus (116 kilometers, or 72 miles across) hovers above the rings, while Pandora (84 kilometers, or 52 miles across) hangs below.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 2, 2007 at a distance of approximately 2.2 million kilometers (1.4 million miles) from Saturn. Image scale is 12 kilometers (7 miles) per pixel on Tethys, 13 kilometers (8 miles) per pixel on Pandora, and 14 kilometers (9 miles) per pixel on Epimetheus.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09008" onclick="window.open(this.href); return false;" title="Voir l'image PIA09008: Cassini Scores a Triple sur le site de la NASA">Voir l'image PIA09008: Cassini Scores a Triple sur le site de la NASA.</a></div>
PIA09008: Cassini Scores a Triple
<h1>PIA09017: Magnificent Scars</h1><div class="PIA09017" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft provides a stunning view of the Odysseus impact basin on Tethys. The enormous basin is 450 kilometers (280 miles) wide.</p><p>The medium-sized crater Melanthius is seen along the terminator at lower left.</p><p>This view looks toward the leading hemisphere of Tethys (1,071 kilometers, or 665 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 21, 2007. The view was obtained at a distance of approximately 211,000 kilometers (131,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 46 degrees. Image scale is 1 kilometer (0.6 mile) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09017" onclick="window.open(this.href); return false;" title="Voir l'image PIA09017: Magnificent Scars sur le site de la NASA">Voir l'image PIA09017: Magnificent Scars sur le site de la NASA.</a></div>
PIA09017: Magnificent Scars
<h1>PIA09723: History on Tethys</h1><div class="PIA09723" lang="en" style="width:689px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft spies four large impact basins on the southern hemisphere of icy Tethys.</p><p>Tethys (1,071 kilometers, or 665 miles across), like the other airless worlds of the Solar System, wears the record of countless impacts experienced over the eons.</p><p>Lit terrain seen here is on the leading hemisphere of Tethys. North is up and rotated 15 degrees to the left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 21, 2007. The view was obtained at a distance of approximately 452,000 kilometers (281,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 54 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09723" onclick="window.open(this.href); return false;" title="Voir l'image PIA09723: History on Tethys sur le site de la NASA">Voir l'image PIA09723: History on Tethys sur le site de la NASA.</a></div>
PIA09723: History on Tethys
<h1>PIA09735: Tethys and Calypso</h1><div class="PIA09735" lang="en" style="width:564px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two companion moons share the sky before the Cassini spacecraft. Tethys is seen here with one of its two Trojan moons. Calypso, which trails the larger moon in its orbit by 60 degrees, is a couple of pixels across near lower right. Telesto (not pictured) is the other Tethys co-orbital moon, leading Tethys by 60 degrees.</p><p>For higher resolution Cassini views of Calypso (22 kilometers, or 14 miles across) and Tethys (1071 kilometers, or 665 miles across), see <a href="/catalog/PIA07633">PIA07633</a> and <a href="/catalog/PIA07738">PIA07738</a>, respectively.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 25, 2007. The view was obtained at a distance of approximately 2.2 million kilometers (1.4 million miles) from Tethys. Image scale is 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/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/PIA09735" onclick="window.open(this.href); return false;" title="Voir l'image PIA09735: Tethys and Calypso sur le site de la NASA">Voir l'image PIA09735: Tethys and Calypso sur le site de la NASA.</a></div>
PIA09735: Tethys and Calypso
<h1>PIA09737: Tethys Crescent</h1><div class="PIA09737" lang="en" style="width:549px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The pockmarked crescent of Tethys displays slightly darker terrain in a band at its equator. The rim of the great crater Odysseus lurks on the terminator.</p><p>Lit terrain seen here is on the leading hemisphere of Tethys (1,071 kilometers, or 665 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft wide-angle camera on Aug. 29, 2007. The view was obtained at a distance of approximately 56,000 kilometers (35,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 105 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09737" onclick="window.open(this.href); return false;" title="Voir l'image PIA09737: Tethys Crescent sur le site de la NASA">Voir l'image PIA09737: Tethys Crescent sur le site de la NASA.</a></div>
PIA09737: Tethys Crescent
<h1>PIA09747: Tethys Aloft</h1><div class="PIA09747" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>An icy moon drifts above the stormy skies of Saturn.</p><p>Tethys (1,071 kilometers, or 665 miles across) is seen here before the dark line of the rings. The shadows of the C ring and B ring drape the northern hemisphere at top.</p><p>This view looks toward the unilluminated side of the rings from less than a degree above the ringplane.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Aug. 15, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 750 nanometers. The view was obtained at a distance of approximately 3.9 million kilometers (2.4 million miles) from Saturn. Image scale is about 22 kilometers (17 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/PIA09747" onclick="window.open(this.href); return false;" title="Voir l'image PIA09747: Tethys Aloft sur le site de la NASA">Voir l'image PIA09747: Tethys Aloft sur le site de la NASA.</a></div>
PIA09747: Tethys Aloft
<h1>PIA09766: Dark Belt of Tethys</h1><div class="PIA09766" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Around the equator on its leading side, Tethys wears a band of slightly darker surface material. Cassini imaging scientists suspect that the darkened region may represent an area of less contaminated ice with differently sized grains than the material at higher latitudes on either side of the band.</p><p>Lit terrain seen here is on the Saturn-facing side of Tethys (1071 kilometers, or 665 miles across). North is up. Part of the great canyon system Ithaca Chasma can be seen near the eastern limb in this frame-filling view.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Sept. 30, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 930 nanometers. The view was acquired at a distance of approximately 186,000 kilometers (116,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 62 degrees. Image scale is 1 kilometer (0.6 mile) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09766" onclick="window.open(this.href); return false;" title="Voir l'image PIA09766: Dark Belt of Tethys sur le site de la NASA">Voir l'image PIA09766: Dark Belt of Tethys sur le site de la NASA.</a></div>
PIA09766: Dark Belt of Tethys
<h1>PIA09781: Toward Tethys</h1><div class="PIA09781" lang="en" style="width:356px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Tethys hangs before the Cassini spacecraft, its great crater Odysseus in view. </p><p>See <a href="/catalog/PIA07693">PIA07693</a> for a close-up view of Odysseus.</p><p>This view looks toward the anti-Saturn hemisphere of Tethys (1,071 kilometers, or 665 miles across). North is up.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Oct. 25, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 752 nanometers. The view was obtained at a distance of approximately 798,000 kilometers (496,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 12 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09781" onclick="window.open(this.href); return false;" title="Voir l'image PIA09781: Toward Tethys sur le site de la NASA">Voir l'image PIA09781: Toward Tethys sur le site de la NASA.</a></div>
PIA09781: Toward Tethys
<h1>PIA09785: Ultraviolet Revelation</h1><div class="PIA09785" lang="en" style="width:220px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This low resolution view of Tethys provides scientists with useful information about the moon's surface properties, regardless of the image's small size. </p><p>The view, which was taken using an ultraviolet spectral filter, demonstrates that the eastern terrain seen here is less reflective than the west at the short wavelengths of light sampled here. This dramatic difference in brightness is not visible in images taken through other, longer wavelength filters from similar viewing geometries.</p><p>Scientists use images taken at various wavelengths, and at different viewing and lighting angles, to tease out details about the surfaces of Saturn's moons.</p><p>This view looks toward the trailing hemisphere on the Saturn-facing side of Tethys (1,071 kilometers, or 665 miles across). North is up. Ithaca Chasma is seen here at left.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Oct. 26, 2007 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was obtained at a distance of approximately 1.6 million kilometers (972,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 16 degrees. Image scale is 9 kilometers (6 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09785" onclick="window.open(this.href); return false;" title="Voir l'image PIA09785: Ultraviolet Revelation sur le site de la NASA">Voir l'image PIA09785: Ultraviolet Revelation sur le site de la NASA.</a></div>
PIA09785: Ultraviolet Revelation
<h1>PIA09788: True Colors</h1><div class="PIA09788" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn’s dark-side rings glow in shades of brown and gold, contrasting with the more neutral appearance of the icy moon Tethys.</p><p>This view looks toward the anti-Saturn side of Tethys (1,062 kilometers, 660 miles across). North is up and rotated 35 degrees to the right.</p><p>The view looks toward the unilluminated side of the rings from about 2 degrees above the ringplane.</p><p>Images taken using red, green and blue spectral filters were combined to create this natural color view. The view was acquired with the Cassini spacecraft narrow-angle camera on Oct. 29, 2007, at a distance of approximately 2.1 million kilometers (1.3 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 21 degrees. Image scale is 12 kilometers (8 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09788" onclick="window.open(this.href); return false;" title="Voir l'image PIA09788: True Colors sur le site de la NASA">Voir l'image PIA09788: True Colors sur le site de la NASA.</a></div>
PIA09788: True Colors
<h1>PIA09835: The Triad of Tethys</h1><div class="PIA09835" lang="en" style="width:328px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view of Tethys displays three of the moon's most notable surface features. At upper left is the giant Odysseus impact basin. At lower right is the great scar of Ithaca Chasma. Extending from east to west across the moon is the great swath of terrain that appears slightly darker than the rest of the moon's surface.</p><p>See <a href="/catalog/PIA09766">PIA09766</a> for a different view of the dark belt.</p><p>This view looks toward the Saturn-facing side of Tethys (1,071 kilometers, or 665 miles across) from 33 degrees above the equator. North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 14, 2008. The view was obtained at a distance of approximately 1.2 million kilometers (715,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 70 degrees. Image scale is 7 kilometers (4 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09835" onclick="window.open(this.href); return false;" title="Voir l'image PIA09835: The Triad of Tethys sur le site de la NASA">Voir l'image PIA09835: The Triad of Tethys sur le site de la NASA.</a></div>
PIA09835: The Triad of Tethys
<h1>PIA09870: Twilight Realm</h1><div class="PIA09870" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Dark shadows are an ever-present part of Saturn's already twilit world, where the Sun's rays are a hundred times more feeble than at Earth.</p><p>Here, the rings cast their silhouette upon the planet, which reciprocates with its own shade upon the rings at upper right. The moon Tethys also casts a dark spot onto Saturn's clouds.</p><p>This view looks toward the unilluminated side of the rings from about 21 degrees above the ringplane. The image was taken with the Cassini spacecraft wide-angle camera on Feb. 25, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 728 nanometers. The view was acquired at a distance of approximately 1.6 million kilometers (1 million miles) from Saturn. Image scale is 94 kilometers (58 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09870" onclick="window.open(this.href); return false;" title="Voir l'image PIA09870: Twilight Realm sur le site de la NASA">Voir l'image PIA09870: Twilight Realm sur le site de la NASA.</a></div>
PIA09870: Twilight Realm
<h1>PIA09878: Odysseus in the Light</h1><div class="PIA09878" lang="en" style="width:412px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft looks down onto high northern latitudes on Tethys, spying the enormous impact basin Odysseus.</p><p>Lit terrain seen here is on the anti-Saturn side of Tethys (1,071 kilometers, or 665 miles across). North is towards the top of the image.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 11, 2008. The view was acquired at a distance of approximately 765,000 kilometers (475,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 97 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" 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/PIA09878" onclick="window.open(this.href); return false;" title="Voir l'image PIA09878: Odysseus in the Light sur le site de la NASA">Voir l'image PIA09878: Odysseus in the Light sur le site de la NASA.</a></div>
PIA09878: Odysseus in the Light
<h1>PIA09903: Impact on the Ice</h1><div class="PIA09903" lang="en" style="width:411px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The enormous impact basin Odysseus sits on the eastern limb of icy Tethys.</p><p>This view looks toward the anti-Saturn side of Tethys (1,062 kilometers, or 660 miles across). North is toward the top of the picture.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on April 14, 2008 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was obtained at a distance of approximately 1.1 million kilometers (714,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 26 degrees. Image scale is 7 kilometers (4 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/PIA09903" onclick="window.open(this.href); return false;" title="Voir l'image PIA09903: Impact on the Ice sur le site de la NASA">Voir l'image PIA09903: Impact on the Ice sur le site de la NASA.</a></div>
PIA09903: Impact on the Ice
<h1>PIA09915: Fortunate View</h1><div class="PIA09915" lang="en" style="width:357px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>From a highly inclined orbit, the Cassini spacecraft looks toward far northern latitudes on Tethys.</p><p>Here, the spacecraft was above a position about 45 degrees north of the moon's equator. This vantage point afforded a view of the moon's three most recognizable features: the Ithaca Chasma canyon system (at lower right), Odysseus crater (at upper left) and the equatorial band of darker terrain (at lower left).</p><p>Lit terrain seen here is on the leading hemisphere of Tethys (1,062 kilometers, or 660 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 29, 2008. The view was obtained at a distance of approximately 991,000 kilometers (616,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 73 degrees. Image scale is 6 kilometers (4 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/PIA09915" onclick="window.open(this.href); return false;" title="Voir l'image PIA09915: Fortunate View sur le site de la NASA">Voir l'image PIA09915: Fortunate View sur le site de la NASA.</a></div>
PIA09915: Fortunate View
<h1>PIA09918: Canyons' End</h1><div class="PIA09918" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft provides an excellent view of the southernmost reaches of the great rift of Tethys—Ithaca Chasma.</p><p>The view is centered on terrain at 43 degrees south latitude, 52 degrees west longitude. North on Tethys (1,062 kilometers, or 660 miles across) is up and rotated 28 degrees to the right.</p><p>The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on May 10, 2008. The view was acquired at a distance of approximately 183,000 kilometers (114,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 73 degrees. Image scale is 1 kilometer (0.6 mile) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" 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/PIA09918" onclick="window.open(this.href); return false;" title="Voir l'image PIA09918: Canyons' End sur le site de la NASA">Voir l'image PIA09918: Canyons' End sur le site de la NASA.</a></div>
PIA09918: Canyons' End
<h1>PIA10400: Broken Ice</h1><div class="PIA10400" lang="en" style="width:788px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft takes in a southern view of the scarred face of icy Tethys. </p><p>The moon's south pole is at bottom center, just above the terminator. To the left of the pole is the crater Melanthius, with its complex of central peaks poking upward into sunlight. On the limb at right, Ithaca Chasma extends northward. The smoothness of the limb is interrupted at the 11 o'clock position by the rim of the crater Odysseus. A belt of darker terrain girdles the moon's equator.</p><p>This is a similar view to that shown in <a href="/catalog/PIA09918">PIA09918</a>. </p><p>This view shows terrain to the west of that seen in the earlier image.</p><p>Lit terrain seen here is on the leading hemisphere of Tethys (1,062 kilometers, 660 miles across). North is up and rotated 9 degrees to the right.</p><p>The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on May 10, 2008. The view was acquired at a distance of approximately 477,000 kilometers (296,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 44 degrees. Image scale is 3 kilometers (2 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" 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/PIA10400" onclick="window.open(this.href); return false;" title="Voir l'image PIA10400: Broken Ice sur le site de la NASA">Voir l'image PIA10400: Broken Ice sur le site de la NASA.</a></div>
PIA10400: Broken Ice
<h1>PIA10401: Distant Moon</h1><div class="PIA10401" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>With nearby Saturn looming large, the Cassini spacecraft spies the bright distant moon Tethys in the icy blackness beyond. </p><p>This view looks toward the unilluminated side of the rings from about 15 degrees above the ringplane. </p><p>Tethys is 1,062 kilometers, or 660 miles, across.</p><p>The image was taken in visible red light with the Cassini spacecraft wide-angle camera on May 13, 2008. The view was obtained at a distance of approximately 1.3 million kilometers (836,000 miles) from Saturn. 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 <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/PIA10401" onclick="window.open(this.href); return false;" title="Voir l'image PIA10401: Distant Moon sur le site de la NASA">Voir l'image PIA10401: Distant Moon sur le site de la NASA.</a></div>
PIA10401: Distant Moon
<h1>PIA10412: On the South Side</h1><div class="PIA10412" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This Cassini spacecraft view looks almost directly at the south pole of Tethys. The large crater Melanthius is seen above center.</p><p>Tethys is 1,062 kilometers (660 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 18, 2008. The view was acquired at a distance of approximately 357,000 kilometers (222,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 72 degrees. Image scale is 2 kilometers (1 mile) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov" 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/PIA10412" onclick="window.open(this.href); return false;" title="Voir l'image PIA10412: On the South Side sur le site de la NASA">Voir l'image PIA10412: On the South Side sur le site de la NASA.</a></div>
PIA10412: On the South Side
<h1>PIA10420: Odysseus the Great</h1><div class="PIA10420" lang="en" style="width:494px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Tethys sports an enormous impact basin, Odysseus. The impact basin is 450-kilometers (280-miles) wide and contains a central complex of mountains. </p><p>See <a href="/catalog/PIA07693">PIA07693</a> for a close-up view of Odysseus.</p><p>Lit terrain seen here is on leading hemisphere of Tethys (1,062 kilometers, 660 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 31, 2008. The view was obtained at a distance of approximately 717,000 kilometers (446,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 59 degrees. Image scale is 4 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/PIA10420" onclick="window.open(this.href); return false;" title="Voir l'image PIA10420: Odysseus the Great sur le site de la NASA">Voir l'image PIA10420: Odysseus the Great sur le site de la NASA.</a></div>
PIA10420: Odysseus the Great