Galerie de photos de Téthys, satellite de la planète Saturne

<h1>PIA00024: Saturn With Tethys and Dione</h1><div class="PIA00024" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Saturn and two of its moons, Tethys (above) and Dione, were photographed by Voyager 1 on November 3, 1980, from 13 million kilometers (8 million miles). The shadows of Saturn's three bright rings and Tethys are cast onto the cloud tops. The limb of the planet can be seen easily through the 3,500-kilometer-wide (2,170 mile) Cassini Division, which separates ring A from ring B. The view through the much narrower Encke Division, near the outer edge of ring A is less clear. Beyond the Encke Division (at left) is the faintest of Saturn's three bright rings, the C-ring or crepe ring, barely visible against the planet. The Voyager Project is managed by the Jet Propulsion Laboratory for NASA.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA00024" onclick="window.open(this.href); return false;" title="Voir l'image PIA00024: Saturn With Tethys and Dione sur le site de la NASA">Voir l'image PIA00024: Saturn With Tethys and Dione sur le site de la NASA.</a></div>
PIA00024: Saturn With Tethys and Dione
<h1>PIA01385: Pictures of Tethys' large crater.</h1><div class="PIA01385" lang="en" style="width:514px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This series of Voyager 2 pictures of Tethys shows its distinctive large crater, 400 kilometers (250 miles) in diameter, as it rotates toward the termination and limb of this satellite of Saturn. These images were obtained at four-hour intervals beginning late Aug. 24 and ending early the next day; the distances were 1.1 million km. (670,000 mi.), 826,000 km. (510,000 mi.) and 680,000 km. (420,000 mi.), respectively. The crater, the remnant of a large impact, has a central peak and several concentric rings. Some grooves radiating from the center may be formed of material thrown from the crater during the impact. The bottom frame, with the crater in profile, reveals that its floor has risen back to the spherical shape of the satellite, unlike the large crater seen on Tethys sister moon Mimas. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01385" onclick="window.open(this.href); return false;" title="Voir l'image PIA01385: Pictures of Tethys' large crater. sur le site de la NASA">Voir l'image PIA01385: Pictures of Tethys' large crater. sur le site de la NASA.</a></div>
PIA01385: Pictures of Tethys' large crater.
<h1>PIA01386: High resolution view of Tethys</h1><div class="PIA01386" lang="en" style="width:260px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This highest-resolution view of Tethys was obtained Aug. 26 when Voyager 2 was 120,000 kilometers (74,500 miles) from this satellite of Saturn. This image was taken 1 1/2 hours after the spacecraft passed through the planet's ring plane. The smallest features visible here are about 2.2 km. (1.4 mi.) across. The heavily cratered terrain implies a very old surface that has changed little since shortly after the solar system formed. Tethys is a bright object made largely of ice; it has a diameter of 1,050 km. (650 mi.). The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01386" onclick="window.open(this.href); return false;" title="Voir l'image PIA01386: High resolution view of Tethys sur le site de la NASA">Voir l'image PIA01386: High resolution view of Tethys sur le site de la NASA.</a></div>
PIA01386: High resolution view of Tethys
<h1>PIA01392: Saturn - Tethys from 594,000 kilometers (368,000 miles) away.</h1><div class="PIA01392" lang="en" style="width:400px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 obtained this image of Tethys on Aug. 25, when the spacecraft was 594,000 kilometers (368,000 miles) from this satellite of Saturn. This photograph was compiled from images taken through the violet, clear and green filters of Voyager's narrow-angle camera. Tethys shows two distinct types of terrain--bright, densely cratered regions; and relatively dark, lightly cratered planes that extend in a broad belt across the satellite. The densely cratered terrain is believed to be part of the ancient crust of the satellite; the lightly cratered planes are thought to have been formed later by internal processes. Also clearly seen is a trough that runs parallel to the terminator (the day-night boundary, seen at right). This trough is an extension of the huge canyon system Voyager 1 saw last fall. This system extends nearly two-thirds the distance around Tethys. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01392" onclick="window.open(this.href); return false;" title="Voir l'image PIA01392: Saturn - Tethys from 594,000 kilometers (368,000 miles) away. sur le site de la NASA">Voir l'image PIA01392: Saturn - Tethys from 594,000 kilometers (368,000 miles) away. sur le site de la NASA.</a></div>
PIA01392: Saturn - Tethys from 594,000 kilometers (368,000 miles) away.
<h1>PIA01397: Photograph of Saturns' satellite Tethys</h1><div class="PIA01397" lang="en" style="width:600px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This Voyager 2 photograph of Tethys shows objects about 5 kilometers (3 miles) in size and is one of the best images of the Saturnian satellite returned by the spacecraft or its predecessor, Voyager 1. Voyager 2 obtained this picture Aug. 26 from a range of 282,000 kilometers (175,000 miles). It has been specially processed by computer to bring out fine detail on the surface. A boundary between heavily cratered regions (top right) and more lightly cratered areas (bottom right) is very similar to boundaries on the moons Dione and Rhea, indicating a period of internal activity early in Tethys' history that partially resurfaced the older terrain. The large crater in the upper right lies almost on the huge trench system that girdles nearly three-fourths of the circumference of the satellite. The trench itself is seen in this image as a linear set of markings to the lower left of the crater. The trench, several kilometers deep, is indicative of a cold, stiff ice crust at the time of its formation. Formation of this trench system could have resulted from the expansion of Tethys as its warm interior froze. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01397" onclick="window.open(this.href); return false;" title="Voir l'image PIA01397: Photograph of Saturns' satellite Tethys sur le site de la NASA">Voir l'image PIA01397: Photograph of Saturns' satellite Tethys sur le site de la NASA.</a></div>
PIA01397: Photograph of Saturns' satellite Tethys
<h1>PIA01398: Saturn - large crater on Tethys</h1><div class="PIA01398" lang="en" style="width:400px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Special processing has brought out surface detail in this Voyager 2 image focusing on the large crater on Tethys. The spacecraft took this photograph Aug. 25, when it was 826,000 kilometers (513,000 miles) from the icy moon of Saturn. Here, resolution is about 15 km. (9 mi.). The crater has been flattened by the flow of softer ice and no longer shows the deep bowl shape characteristic of fresh craters in hard, cold ice or rock. It appears to have been formed early in Tethys' history, at a time when its interior was still relatively warm and soft. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01398" onclick="window.open(this.href); return false;" title="Voir l'image PIA01398: Saturn - large crater on Tethys sur le site de la NASA">Voir l'image PIA01398: Saturn - large crater on Tethys sur le site de la NASA.</a></div>
PIA01398: Saturn - large crater on Tethys
<h1>PIA01399: Saturn's moon Tethys</h1><div class="PIA01399" lang="en" style="width:250px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Voyager 2 obtained this view of Saturn's moon Tethys on Aug.25 from a distance of 540,000 kilometers (335,000 miles). It shows the numerous impact craters and fault valleys of a very ancient surface. Tethys itself is 1,090 km. (675 mi.) in diameter, and the great chasm seen at the top of this image extends 1,700 km. (1,050 mi.), halfway across the satellite. The largest impact crater visible here is 90 km. (55 mi.) in diameter. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01399" onclick="window.open(this.href); return false;" title="Voir l'image PIA01399: Saturn's moon Tethys sur le site de la NASA">Voir l'image PIA01399: Saturn's moon Tethys sur le site de la NASA.</a></div>
PIA01399: Saturn's moon Tethys
<h1>PIA01974: Cratered surface of Tethys</h1><div class="PIA01974" lang="en" style="width:150px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">The heavily cratered surface of Tethys was photographed at l:35 a.m. PST on November 12 from a distance of l.2 million kilometers (750,000 miles) by Voyager l. This face of Tethys looks toward Saturn and shows a large valley about 750 kilometers long and 60 kilometers wide (500 by 40 miles). The craters are probably the result of impacts and the valley appears to be a large fracture of unknown origin. The diameter of Tethys is about 1000 kilometers (600 miles) or slightly less than l/3 the size of our Moon. The smallest feature visible on this picture is about 24 kilometers across. The Voyager Project is managed by the Jet Propulsion Laboratory for NASA.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01974" onclick="window.open(this.href); return false;" title="Voir l'image PIA01974: Cratered surface of Tethys sur le site de la NASA">Voir l'image PIA01974: Cratered surface of Tethys sur le site de la NASA.</a></div>
PIA01974: Cratered surface of Tethys
<h1>PIA02276: Tethys</h1><div class="PIA02276" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">The Saturn satellite Tethys was viewed by Voyager 2 on Aug. 25 from a distance of 1 million kilometers (620,000 mi.). Evident on the surface of this icy moon is an enormous impact crater almost 400 km. (250 mi.) in diameter and about 15 km. (10 mi.) deep. Tethys itself is only 1,050 km. (650 mi.) in diameter. The crater contains a central peak about as high as the crater is deep; it is the result of rebound after the impact. Tethys resembles its sister satellite Mimas, seen closeup by Voyager 1 last fall. That body has a crater 130 km. (80 mi.) in diameter. The Tethys crater, which is so large that Mimas would fit inside, is on the opposite side of the great rift valley observed by Voyager 1. Many other, smaller craters pock-mark the surface here. The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA02276" onclick="window.open(this.href); return false;" title="Voir l'image PIA02276: Tethys sur le site de la NASA">Voir l'image PIA02276: Tethys sur le site de la NASA.</a></div>
PIA02276: Tethys
<h1>PIA05420: Tethys: The Sea Goddess</h1><div class="PIA05420" lang="en" style="width:512px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Like a half-full moon, cratered Tethys hangs before the Cassini spacecraft in this narrow angle camera view taken on July 3, 2004.</p><p>Voyager images showed a large fracture on Tethys about 750 kilometers (470 miles) long (not seen in this view). Cassini will investigate this and other features on Tethys during two planned flybys, the first occurring on September 24, 2005. Tethys is 1,060 kilometers (659 miles) across.</p><p>The image was taken in visible light from a distance of 1.7 million kilometers (1 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase angle of about 97 degrees. The image scale is 10 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 Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA05420" onclick="window.open(this.href); return false;" title="Voir l'image PIA05420: Tethys: The Sea Goddess sur le site de la NASA">Voir l'image PIA05420: Tethys: The Sea Goddess sur le site de la NASA.</a></div>
PIA05420: Tethys: The Sea Goddess
<h1>PIA05426: Speeding Away from Tethys</h1><div class="PIA05426" lang="en" style="width:216px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view Saturn's icy moon Tethys shows a large crater with a central peak in the southern hemisphere. Other surface details of this heavily cratered surface are faintly visible. At the time this image was taken, Cassini was speeding away from the Saturn system on its initial long, looping orbit.</p><p>The image was taken in visible light with the Cassini spacecraft narrow angle camera on July 13, 2004. Cassini was 4.8 million kilometers (3 million miles) from Tethys. Thethys, pronounced "TEE-thiss," has a diameter of 1,060 kilometers (659 miles). The Sun-Tethys-spacecraft, or phase angle of the images is 97 degrees. The image scale is 29 kilometers (18 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 Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA05426" onclick="window.open(this.href); return false;" title="Voir l'image PIA05426: Speeding Away from Tethys sur le site de la NASA">Voir l'image PIA05426: Speeding Away from Tethys sur le site de la NASA.</a></div>
PIA05426: Speeding Away from Tethys
<h1>PIA06140: Battered and Grooved</h1><div class="PIA06140" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Having now passed closer to Tethys than the Voyager 2 spacecraft, Cassini has returned the best-ever natural color view of this icy Saturnian moon.</p><p>As seen here, the battered surface of Tethys (1,060 kilometers, or 659 miles across) has a neutral hue. The image here is a mosaic of two footprints. Three images taken in the red, green and blue filters were taken to form a natural color composite. The result reveals a world nearly saturated with craters - many small craters lie on top of older, larger ones, suggesting an ancient surface. At the top and along the boundary between day and night, the moon's terrain has a grooved appearance.</p><p>This moon is known to have a density very close to that of water, indicating it is likely composed mainly of water ice. Its frozen mysteries await Cassini's planned close flyby in September 2005.</p><p>The view shows primarily the trailing hemisphere of Tethys, which is the side opposite the moon's direction of motion in its orbit. The image has been rotated so that north on Tethys is up.</p><p>The images comprising this color view were taken with the Cassini spacecraft narrow angle camera on Oct. 28, 2004, at a distance of about 256,000 kilometers (159,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 50 degrees. The image scale is 1.5 kilometers (0.9 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06140" onclick="window.open(this.href); return false;" title="Voir l'image PIA06140: Battered and Grooved sur le site de la NASA">Voir l'image PIA06140: Battered and Grooved sur le site de la NASA.</a></div>
PIA06140: Battered and Grooved
<h1>PIA06460: Distant Tethys</h1><div class="PIA06460" lang="en" style="width:308px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>With just a bit of detail visible on its lit hemisphere, Tethys was imaged by Cassini on July 20, 2004. A round feature, likely a large crater, can be seen near the boundary where day and night meet, at the bottom of the image. Dark markings are visible near the top.</p><p>The image was taken in visible light, with the Cassini spacecraft narrow angle camera from a distance of 6.1 million kilometers (3.8 million miles) from Tethys, and at a Sun-Tethys-spacecraft, or phase angle of 92 degrees. The image scale is 37 kilometers (23 miles) per pixel. The image has been magnified by a factor of four 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 Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06460" onclick="window.open(this.href); return false;" title="Voir l'image PIA06460: Distant Tethys sur le site de la NASA">Voir l'image PIA06460: Distant Tethys sur le site de la NASA.</a></div>
PIA06460: Distant Tethys
<h1>PIA06492: Tethys Magnified</h1><div class="PIA06492" lang="en" style="width:312px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini sighted the far-off icy moon Tethys as it headed back toward Saturn in its long, looping first orbit of the planet. A faint hint of detail on the moon's cratered surface is visible here. Tethys was discovered by Giovanni Cassini, for whom the spacecraft was named. Its diameter is 1,060 kilometers (659 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow angle camera on Sept. 9, 2004, at a distance of 8.8 million kilometers (5.5 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 81 degrees. The image scale is 53 kilometers (33 miles) per pixel. The image was magnified by a factor of four 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 Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06492" onclick="window.open(this.href); return false;" title="Voir l'image PIA06492: Tethys Magnified sur le site de la NASA">Voir l'image PIA06492: Tethys Magnified sur le site de la NASA.</a></div>
PIA06492: Tethys Magnified
<h1>PIA06518: Craters of Tethys</h1><div class="PIA06518" lang="en" style="width:624px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two large craters and hints of several smaller ones are visible in this Cassini image of Saturn's icy moon Tethys (1060 kilometers, or 659 miles, across).</p><p>The image was taken in visible light with the Cassini spacecraft narrow angle camera on Sept. 23, 2004, at a distance of 7.9 million kilometers (4.9 million miles) from Tethys and at a Sun- Tethys-spacecraft, or phase, angle of 80 degrees. The image scale is 48 kilometers (30 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of four 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 Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.<p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06518" onclick="window.open(this.href); return false;" title="Voir l'image PIA06518: Craters of Tethys sur le site de la NASA">Voir l'image PIA06518: Craters of Tethys sur le site de la NASA.</a></div>
PIA06518: Craters of Tethys
<h1>PIA06526: Breathtaking Vista</h1><div class="PIA06526" lang="en" style="width:689px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This dazzling view looks beyond gigantic storms near Saturn's south pole to the small but clear disc of Tethys (1,060 kilometers, or 659 miles, across). Clouds and ribbons of gas swirl about in the planet's atmosphere in the foreground, while a tremendous chasm is visible on the icy moon.</p><p>The image was taken with the Cassini spacecraft narrow angle camera on Oct. 18, 2004, at a distance of 3.9 million kilometers (2.4 million miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 61 degrees. The view is in wavelengths of visible red light centered at 619 nanometers. The image scale is 23 kilometers (14 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06526" onclick="window.open(this.href); return false;" title="Voir l'image PIA06526: Breathtaking Vista sur le site de la NASA">Voir l'image PIA06526: Breathtaking Vista sur le site de la NASA.</a></div>
PIA06526: Breathtaking Vista
<h1>PIA06548: Rings from Afar</h1><div class="PIA06548" lang="en" style="width:699px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Even from afar, Cassini's cameras reveal a tremendous amount of detail in the planet's rings. The punctuated detail in the C ring, the bright fine structure in the B ring, the dark bands within the Cassini Division, the bland nature of the outermost A ring, as well as knots in the twisted F ring, are all visible. The moon Tethys (1,060 kilometers, or 659 miles, across) hovers beyond the rings at the top.</p><p>This image was taken from beneath the ring plane in visible green light with the Cassini spacecraft wide angle camera on Nov. 1, 2004, at a distance of approximately 2.2 million kilometers (1.4 million miles) from Saturn. The image scale is 129 kilometers (80 miles) per pixel. This image has been slightly contrast-enhanced to aid visibility. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06548" onclick="window.open(this.href); return false;" title="Voir l'image PIA06548: Rings from Afar sur le site de la NASA">Voir l'image PIA06548: Rings from Afar sur le site de la NASA.</a></div>
PIA06548: Rings from Afar
<h1>PIA06558: Tethys' Great Rift</h1><div class="PIA06558" lang="en" style="width:585px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This dazzling view of Tethys shows the tremendous rift called Ithaca Chasma, which is 100 kilometers (60 miles) wide in places, and runs nearly three-fourths of the way around the icy moon. Tethys is 1,060 kilometers (659 miles) across.</p><p>Adjacent to the great Chasma is a large multi-ring impact basin with a diameter of about 300 kilometers (185 miles). The inner ring of the basin is about 130 kilometers (80 miles) in diameter. The moon's heavily cratered face is indicative of an ancient surface.</p><p>This view shows principally the Saturn-facing hemisphere of Tethys. The image was taken in visible light with the Cassini spacecraft narrow angle camera on Dec. 15, 2004, at a distance of approximately 560,000 kilometers (348,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 91 degrees. The image scale is about 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 Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information, about the Cassini-Huygens mission visit, <a href="http://saturn.jpl.nasa.gov/">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org/">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06558" onclick="window.open(this.href); return false;" title="Voir l'image PIA06558: Tethys' Great Rift sur le site de la NASA">Voir l'image PIA06558: Tethys' Great Rift sur le site de la NASA.</a></div>
PIA06558: Tethys' Great Rift
<h1>PIA06571: Dawn for Odysseus</h1><div class="PIA06571" lang="en" style="width:469px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The eastern rim of the large crater Odysseus is visible along the terminator in this image of Saturn's moon Tethys. This enormous impact feature is the largest on Tethys, at approximately 450 kilometers (280 miles) across. The shadowy rim of another smaller crater can be seen at the bottom. Tethys is 1,060 kilometers (659 miles) across.</p><p>This Cassini view shows principally the leading hemisphere of Tethys. The image was taken in visible light with the Cassini spacecraft narrow angle camera on Dec. 18, 2004, at a distance of 1.7 million kilometers (1.1 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 94 degrees. The image scale is about 10 kilometers (6 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 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 images visit the Cassini imaging team home page <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06571" onclick="window.open(this.href); return false;" title="Voir l'image PIA06571: Dawn for Odysseus sur le site de la NASA">Voir l'image PIA06571: Dawn for Odysseus sur le site de la NASA.</a></div>
PIA06571: Dawn for Odysseus
<h1>PIA06583: The Great Rift</h1><div class="PIA06583" lang="en" style="width:687px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Ithaca Chasma is one of the two most prominent features on Saturn's moon Tethys; the other is the gigantic crater Odysseus. Ithaca Chasma is visible near the moon's lower right limb in this image, which does not reveal the branching canyon's full extent. Tethys is 1,060 kilometers (659 miles) across.</p><p>Discovered in NASA Voyager images, the chasm is 100 kilometers (60 miles) across on average, and is 4 kilometers (2 miles) deep in places. It stretches more than 1,000 kilometers (620 miles) over Tethys' surface, from north to south.</p><p>This view is roughly centered on the leading hemisphere of Tethys. The image has been rotated so that north on Tethys is up.</p><p>This view was obtained with the Cassini spacecraft narrow angle camera on Jan. 17, 2005, at a distance of approximately 1 million kilometers (621,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 110 degrees. A spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers was used to capture the image. Resolution in the original image was about 6 kilometers (3.7 miles) per pixel. Contrast was enhanced and the image was 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> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06583" onclick="window.open(this.href); return false;" title="Voir l'image PIA06583: The Great Rift sur le site de la NASA">Voir l'image PIA06583: The Great Rift sur le site de la NASA.</a></div>
PIA06583: The Great Rift
<h1>PIA06590: Slice of Tethys</h1><div class="PIA06590" lang="en" style="width:464px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This Cassini view of Saturn's moon Tethys shows several large craters near the moon's eastern limb. These craters have fanciful names such as Phemius, Polyphemus and Ajax. The moon's massive rift-like canyon system, Ithaca Chasma, is in the darkness to the west. Tethys is 1,071 kilometers (665 miles) across.</p><p>The image has been rotated so that north on Tethys is up. This view shows mainly the moon's trailing hemisphere.</p><p>The image was taken in visible blue light with the Cassini spacecraft narrow angle camera on Jan. 19, 2005, at a distance of approximately 1.9 million kilometers (1.2 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 111 degrees. Resolution in the original image was 11 kilometers (7 miles) per pixel. The image has been contrast-enhanced and 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> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06590" onclick="window.open(this.href); return false;" title="Voir l'image PIA06590: Slice of Tethys sur le site de la NASA">Voir l'image PIA06590: Slice of Tethys sur le site de la NASA.</a></div>
PIA06590: Slice of Tethys
<h1>PIA06622: Hanging Half-Moon</h1><div class="PIA06622" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This Cassini image shows Saturn's crater-covered moon Tethys as it slid silently along in its orbit while Saturn's delicate rings sliced the view in two. Tethys is 1,071 kilometers (665 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 23, 2005, 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 78 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 team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission, visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06622" onclick="window.open(this.href); return false;" title="Voir l'image PIA06622: Hanging Half-Moon sur le site de la NASA">Voir l'image PIA06622: Hanging Half-Moon sur le site de la NASA.</a></div>
PIA06622: Hanging Half-Moon
<h1>PIA06625: Eye of Tethys</h1><div class="PIA06625" lang="en" style="width:371px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's moon Tethys turns like a great eye as the enormous crater Odysseus (450 kilometers or 280 miles across) rotates into Cassini's view. Tethys is 1,071 kilometers (665 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 6, 2005, at a distance of approximately 1.7 million kilometers (1.1 million miles) from Tethys and from a Sun-Tethys-spacecraft, or phase, angle of 35 degrees. The image scale is 10 kilometers (6 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 team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission, visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06625" onclick="window.open(this.href); return false;" title="Voir l'image PIA06625: Eye of Tethys sur le site de la NASA">Voir l'image PIA06625: Eye of Tethys sur le site de la NASA.</a></div>
PIA06625: Eye of Tethys
<h1>PIA06629: Sister Moons</h1><div class="PIA06629" lang="en" style="width:529px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini offers this lovely comparison between two of Saturn's satellites, Dione and Tethys, which are similar in size but have very different surfaces.</p><p>Extensive systems of bright fractures carve the surface of Dione (1,118 kilometers, or 695 miles across). The double-pronged feature Carthage Linea points toward the crater Turnus at the nine o'clock position near the terminator, and Palatine Linea runs toward the moon's bottom limb near the five o'clock position.</p><p>In contrast, the surface of Tethys (1,071 kilometers, or 665 miles across) appears brighter and more heavily cratered. The large crater Penelope is near the eastern limb. The huge rift zone Ithaca Chasma, which is 3 to 5 kilometers (2 to 3 miles) deep and extends for about 2,000 kilometers (1,200 miles) from north to south across Tethys, is hidden in shadow just beyond the terminator. For comparison, the Grand Canyon in Arizona is about 1.5 kilometers (1 mile) deep, and about 450 kilometers (280 miles) long.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 7, 2005, at a distance of approximately 1.5 million kilometers (908,000 miles) from Tethys and 1.6 million kilometers (994,000 miles) from Dione. The image scale is 9 kilometers (6 miles) per pixel on Tethys, and 10 kilometers (6 miles) per pixel on Dione. </p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission, visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov</a> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06629" onclick="window.open(this.href); return false;" title="Voir l'image PIA06629: Sister Moons sur le site de la NASA">Voir l'image PIA06629: Sister Moons sur le site de la NASA.</a></div>
PIA06629: Sister Moons
<h1>PIA06632: Banded Moon</h1><div class="PIA06632" lang="en" style="width:492px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>In this infrared view, Saturn's cratered moon Tethys shows a faint, dark band across its equatorial region. Tethys is 1,071 kilometers (665 miles) across.</p><p>North is up in this view, which shows the leading hemisphere on Tethys. </p><p>The image was taken with the Cassini spacecraft narrow-angle camera on March 11, 2005, through a filter sensitive to wavelengths of infrared light centered at 930 nanometers. The view was acquired at a distance of approximately 1.4 million kilometers (850,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 80 degrees. Resolution in the original image was 8 kilometers (5 miles) per pixel. The image has been contrast-enhanced and 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> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06632" onclick="window.open(this.href); return false;" title="Voir l'image PIA06632: Banded Moon sur le site de la NASA">Voir l'image PIA06632: Banded Moon sur le site de la NASA.</a></div>
PIA06632: Banded Moon
<h1>PIA06633: North and South on Tethys</h1><div class="PIA06633" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view of Saturn's moon Tethys shows the contrast between the more heavily cratered region near the top and the more lightly cratered (and presumably younger) plains toward the bottom part of the image and near the limb. Some of the larger craters in the latter region appear to be somewhat subdued or filled in. Tethys is 1,071 kilometers (665 miles) across.</p><p>This view shows principally the anti-Saturn hemisphere on Tethys. North is up and tilted 20 degrees to the left.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on March 9, 2005, through a filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was obtained at a distance of approximately 200,000 kilometers (127,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 120 degrees. Resolution in the image is 1 kilometer (0.6 mile) per pixel. </p><p>The image was taken with the Cassini spacecraft narrow-angle camera on March 11, 2005, through a filter sensitive to wavelengths of infrared light centered at 930 nanometers. The view was acquired at a distance of approximately 1.4 million kilometers (850,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 80 degrees. Resolution in the original image was 8 kilometers (5 miles) per pixel. The image has been contrast-enhanced and 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> and the Cassini imaging team home page, <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA06633" onclick="window.open(this.href); return false;" title="Voir l'image PIA06633: North and South on Tethys sur le site de la NASA">Voir l'image PIA06633: North and South on Tethys sur le site de la NASA.</a></div>
PIA06633: North and South on Tethys
<h1>PIA06649: Tethys and Rings</h1><div class="PIA06649" lang="en" style="width:629px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Two large impact basins, including the 450-kilometer-wide (280-mile) Odysseus basin (at the top), mark the face of Saturn's moon Tethys. The outer edge of Saturn's rings is visible at the lower right. </p><p>Just discernable is a slight north-south difference in brightness across Tethys' surface. North on Tethys is up and tilted about 20 degrees to the left. This view shows principally the anti-Saturn hemisphere of Tethys. Tethys is 1,071 kilometers (665 miles) across.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 3, 2005, at a distance of approximately 1.8 million kilometers (1.1 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase angle of 80 degrees. The image scale is 11 kilometers (7 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging 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/PIA06649" onclick="window.open(this.href); return false;" title="Voir l'image PIA06649: Tethys and Rings sur le site de la NASA">Voir l'image PIA06649: Tethys and Rings sur le site de la NASA.</a></div>
PIA06649: Tethys and Rings
<h1>PIA07535: Icy Scars</h1><div class="PIA07535" lang="en" style="width:534px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's icy moon Tethys displays a very old impact basin here, just southeast of its giant canyon system, Ithaca Chasma. The large crater has been degraded, or softened, by time and a more recent impact has formed a smaller crater near its southern edge. This large basin was first seen in images from the NASA Voyager mission. Tethys is 1,071 kilometers (665 miles) across.</p><p>A sharper, presumably younger crater called Penelope lies near the eastern limb, at the 3 o'clock position. This view shows principally the trailing hemisphere on Tethys. North is directly up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 20, 2005, at a distance of approximately 1 million kilometers (600,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 31 degrees. Resolution in the original image was 6 kilometers (4 miles) per pixel. The image has been contrast-enhanced and 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/PIA07535" onclick="window.open(this.href); return false;" title="Voir l'image PIA07535: Icy Scars sur le site de la NASA">Voir l'image PIA07535: Icy Scars sur le site de la NASA.</a></div>
PIA07535: Icy Scars
<h1>PIA07536: Tethys Mysteries</h1><div class="PIA07536" lang="en" style="width:620px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Saturn's moon Tethys, named for a sea goddess, shows off two of its more puzzling features in this Cassini image. Ithaca Chasma, near lower right, stretches for more than 1,000 kilometers (620 miles) across the moon's surface. The origin of this canyon system, which is 100 kilometers (60 miles) across on average, is not completely understood, but might have resulted from the impact that created the giant crater Odysseus. Tethys is 1,071 kilometers (665 miles) across.</p><p>Also notable in this view is the dark band that girdles the moon's equator. The nature of this feature may be better understood following Cassini's planned close flyby in September, 2005.</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 in visible light with the Cassini spacecraft narrow-angle camera on May 22, 2005, at a distance of approximately 884,000 kilometers (550,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 97 degrees. Resolution in the original image was 5 kilometers (3 miles) per pixel. The image has been contrast-enhanced and 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/PIA07536" onclick="window.open(this.href); return false;" title="Voir l'image PIA07536: Tethys Mysteries sur le site de la NASA">Voir l'image PIA07536: Tethys Mysteries sur le site de la NASA.</a></div>
PIA07536: Tethys Mysteries
<h1>PIA07545: Fantasy Made Real</h1><div class="PIA07545" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The majesty of Saturn overwhelms in this image from Cassini. Saturn's moon Tethys glides past in its orbit, and the icy rings mask the frigid northern latitudes with their shadows. Tethys is 1,071 kilometers (665 miles) across.</p><p>The image was taken in visible green light with the Cassini spacecraft wide-angle camera on June 10, 2005, at a distance of approximately 1.4 million kilometers (900,000 miles) from Saturn. The image scale is 80 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 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/PIA07545" onclick="window.open(this.href); return false;" title="Voir l'image PIA07545: Fantasy Made Real sur le site de la NASA">Voir l'image PIA07545: Fantasy Made Real sur le site de la NASA.</a></div>
PIA07545: Fantasy Made Real