Galerie de photos de Rhéa, satellite de la planète Saturne

<h1>PIA08307: Resplendent Rhea</h1><div class="PIA08307" lang="en" style="width:487px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Bright streaks adorn the face of densely cratered Rhea, Saturn's second largest moon.</p><p>The lit terrain seen here is on the leading hemisphere of Rhea (1,528 kilometers, or 949 miles across). North is up and rotated five degrees to the right.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 11, 2006 at a distance of approximately 756,000 kilometers (470,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 49 degrees. Image scale is 5 kilometers (3 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08307" onclick="window.open(this.href); return false;" title="Voir l'image PIA08307: Resplendent Rhea sur le site de la NASA">Voir l'image PIA08307: Resplendent Rhea sur le site de la NASA.</a></div>
PIA08307: Resplendent Rhea
<h1>PIA08350: Enceladus Transits Rhea</h1><div class="PIA08350" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA08350.mov"></a><br />Click on the image for movie of<br />Enceladus Transits Rhea</p><p>The bright crescent of Saturn's moon Enceladus slides past distant Rhea in this mutual event, or occultation, movie from Cassini.</p><p>The movie was created from 40 original images taken over the course of about 20 minutes as the spacecraft's narrow angle camera remained pointed toward Enceladus. Additional frames were inserted between the 40 Cassini images to smooth the appearance of the moons' movement -- a scheme called interpolation.</p><p>As Enceladus (505 kilometers, or 314 miles across) approaches Rhea (1,528 kilometers, or 949 miles across), the shadow of Saturn can be seen, projected onto the unlit side of its incredible rings.</p><p>The images were taken in visible light with the Cassini spacecraft narrow-angle camera on March 2, 2006, at a distance of approximately 2.8 million kilometers (1.7 million miles) from Rhea and 2 million kilometers (1.2 million miles) from Enceladus. Image scale is 17 kilometers (11 miles) per pixel on Rhea and 12 kilometers (7 miles) per pixel on Enceladus. </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/PIA08350" onclick="window.open(this.href); return false;" title="Voir l'image PIA08350: Enceladus Transits Rhea sur le site de la NASA">Voir l'image PIA08350: Enceladus Transits Rhea sur le site de la NASA.</a></div>
PIA08350: Enceladus Transits Rhea
<h1>PIA08402: Rhea's Pop-up Crater</h1><div class="PIA08402" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA08402_fig1.jpg"></a><br />Annotated Version</p><p>Rhea's surface gains some depth in this stereo image, or anaglyph, which features the bright and geologically young-looking rayed crater on the moon's leading hemisphere. The view was created from images taken during Cassini's close encounter with Rhea (1,528 kilometers, or 949 miles across) on Aug. 30, 2007.</p><p>The crater is 48 kilometers (30 miles) wide, and its rays extend several hundred kilometers outward. The rim of this crater is quite sharply defined, and there are few small craters overprinted onto it. These characteristics, along with the brightness of the crater and its rays are indicative of a feature formed relatively recently in geologic history.</p><p>The hummocky floor of the crater possesses a central peak and clusters of small craters. The little craters may be secondary impact sites, formed by ejecta from the primary impact that landed in the crater, or they could have been formed by material that had broken off of the body that struck Rhea.</p><p>For an even higher resolution view of this feature, see <a href="/catalog/PIA07764">PIA07764</a>.</p><p>This stereo image is a mosaic consisting of seven Cassini spacecraft narrow-angle camera images. The view is an orthographic projection centered on 12 degrees south latitude, 112 degrees west longitude and has a resolution of 45 meters (148 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 clear filter images for this stereo image were taken from distances ranging from about 17,000 kilometers (10,600 miles, for the red-colored image) to 7,500 kilometers (4,700 miles, for the blue/green-colored image) from Rhea. </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/PIA08402" onclick="window.open(this.href); return false;" title="Voir l'image PIA08402: Rhea's Pop-up Crater sur le site de la NASA">Voir l'image PIA08402: Rhea's Pop-up Crater sur le site de la NASA.</a></div>
PIA08402: Rhea's Pop-up Crater
<h1>PIA08851: Barren Pole</h1><div class="PIA08851" lang="en" style="width:405px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This view looks toward Rhea's north polar region, where icy fractures slither away toward the south.</p><p>Lit terrain in this view is on the Saturn-facing hemisphere of Rhea (1,528 kilometers, or 949 miles across). </p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 4, 2006 at a distance of approximately 773,000 kilometers (480,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 105 degrees. Image scale is 5 kilometers (3 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08851" onclick="window.open(this.href); return false;" title="Voir l'image PIA08851: Barren Pole sur le site de la NASA">Voir l'image PIA08851: Barren Pole sur le site de la NASA.</a></div>
PIA08851: Barren Pole
<h1>PIA08871: Color Across Rhea</h1><div class="PIA08871" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Side-by-side natural color and false-color views highlight the wispy terrain on Rhea's trailing hemisphere.</p><p>The extreme false color image makes it clear that the wisps -- likely networks of fractures as on Dione -- cut across older, cratered terrain. In addition, a set of thin, north-south trending lineaments (also likely fractures) is visible on the left side of both views.</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 Rhea. 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 Rhea (1,528 kilometers, or 949 miles across) is up.</p><p>The images were taken with the Cassini spacecraft narrow-angle camera on Jan. 17, 2007 at a distance of approximately 597,000 kilometers (371,000 miles) from Rhea. 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/PIA08871" onclick="window.open(this.href); return false;" title="Voir l'image PIA08871: Color Across Rhea sur le site de la NASA">Voir l'image PIA08871: Color Across Rhea sur le site de la NASA.</a></div>
PIA08871: Color Across Rhea
<h1>PIA08886: Drawing Out Details</h1><div class="PIA08886" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea displays a marked color contrast from north to south that is particularly easy to see in the extreme color-enhanced Cassini spacecraft view presented here.</p><p>A clear filter image is also presented (left) alongside the color composite (right).</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 Rhea. 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>This view looks toward the trailing hemisphere on Rhea (1,528 kilometers, or 949 miles across). The view shows southerly latitudes on Rhea, down to the south pole. North is up and rotated 17 degrees to the right.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 17, 2007 at a distance of approximately 457,000 kilometers (284,000 miles) from Rhea. 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/PIA08886" onclick="window.open(this.href); return false;" title="Voir l'image PIA08886: Drawing Out Details sur le site de la NASA">Voir l'image PIA08886: Drawing Out Details sur le site de la NASA.</a></div>
PIA08886: Drawing Out Details
<h1>PIA08909: Rhea's Scars</h1><div class="PIA08909" lang="en" style="width:264px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft examines the desolate, cratered crescent of Rhea, a surface so heavily bombarded over the eons that new craters are virtually guaranteed to form on top of older ones. The large Tirawa impact basin is visible here.</p><p>This view looks toward the leading hemisphere on Rhea (1,528 kilometers, or 949 miles across). 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 1.7 million kilometers (1 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 106 degrees. 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 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/PIA08909" onclick="window.open(this.href); return false;" title="Voir l'image PIA08909: Rhea's Scars sur le site de la NASA">Voir l'image PIA08909: Rhea's Scars sur le site de la NASA.</a></div>
PIA08909: Rhea's Scars
<h1>PIA08917: Crossing Saturn</h1><div class="PIA08917" lang="en" style="width:448px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea brushes the stormy face of Saturn, an airless ice orb against the feathery bands of a gas giant.</p><p>Saturn's unilluminated rings are seen at upper right. Rhea is the second largest of Saturn's moons at 1,528 kilometers (949 miles) across.</p><p>This view looks toward the unlit side of the rings from about 3 degrees above the ringplane.</p><p>The image was taken in wavelengths of polarized infrared light with the Cassini spacecraft wide-angle camera on Feb. 4, 2007. Cassini acquired the view at a distance of approximately 1.2 million kilometers (700,000 miles) from Saturn and 679,000 kilometers (422,000 miles) from Rhea. Image scale is 137 kilometers (85 miles) per pixel on Saturn and about 80 kilometers (50 miles) per pixel on Rhea.</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/PIA08917" onclick="window.open(this.href); return false;" title="Voir l'image PIA08917: Crossing Saturn sur le site de la NASA">Voir l'image PIA08917: Crossing Saturn sur le site de la NASA.</a></div>
PIA08917: Crossing Saturn
<h1>PIA08962: Rhea's Bright Wisps</h1><div class="PIA08962" lang="en" style="width:246px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Wispy markings reach out across Rhea's surface from its trailing hemisphere. The bright markings appear to be fractures, like those found on Dione.</p><p>This view looks toward the northern hemisphere on Rhea's trailing side. North on Rhea (1,528 kilometers, or 949 miles across) is up and rotated about 40 degrees to the right.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 1, 2007 at a distance of approximately 1.9 million kilometers (1.2 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 54 degrees. 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 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/PIA08962" onclick="window.open(this.href); return false;" title="Voir l'image PIA08962: Rhea's Bright Wisps sur le site de la NASA">Voir l'image PIA08962: Rhea's Bright Wisps sur le site de la NASA.</a></div>
PIA08962: Rhea's Bright Wisps
<h1>PIA08970: Accustomed to Her Face</h1><div class="PIA08970" lang="en" style="width:433px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>After nearly three years at Saturn, the Cassini spacecraft continues to observe the planet's retinue of icy moons, seeing exciting details with every orbit. Rhea's cratered face attests to its great age, while its bright wisps hint at tectonic activity in the past.</p><p>This view looks toward the moon's Saturn-facing hemisphere. North on Rhea (1,528 kilometers, or 949 miles across) is up and rotated about 8 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 acquired at a distance of approximately 879,000 kilometers (546,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 43 degrees. Image scale is 5 kilometers (3 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA08970" onclick="window.open(this.href); return false;" title="Voir l'image PIA08970: Accustomed to Her Face sur le site de la NASA">Voir l'image PIA08970: Accustomed to Her Face sur le site de la NASA.</a></div>
PIA08970: Accustomed to Her Face
<h1>PIA08976: Tirawa on the Terminator</h1><div class="PIA08976" lang="en" style="width:246px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea sports an immense impact scar on its leading hemisphere, like several other major Saturnian moons. The impact basin, seen above center on the day-night dividing line, or terminator, is named Tirawa, and is about 360 kilometers (220 miles) across.</p><p>North on Rhea (1,528 kilometers, or 949 miles across) is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 1, 2007. The view was acquired at a distance of approximately 1.6 million kilometers (1 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 55 degrees. 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 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/PIA08976" onclick="window.open(this.href); return false;" title="Voir l'image PIA08976: Tirawa on the Terminator sur le site de la NASA">Voir l'image PIA08976: Tirawa on the Terminator sur le site de la NASA.</a></div>
PIA08976: Tirawa on the Terminator
<h1>PIA08986: Rhea in Saturnshine</h1><div class="PIA08986" lang="en" style="width:512px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The night side of Rhea shines softly in reflected light from Saturn. A similar effect, called Earthshine, can often be seen dimly illuminating the dark side Earth's moon.</p><p>Background stars make short, dim trails across the black sky. The sunlit terrain on Rhea is so much brighter than the part lit by Saturn that the former is completely overexposed in this view, which took more than 30 seconds to acquire.</p><p>This view looks toward the leading hemisphere on Rhea (1,528 kilometers, or 949 miles across). North is up and rotated 28 degrees to the left.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 11, 2007. The view was obtained at a distance of approximately 364,000 kilometers (226,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 154 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">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/PIA08986" onclick="window.open(this.href); return false;" title="Voir l'image PIA08986: Rhea in Saturnshine sur le site de la NASA">Voir l'image PIA08986: Rhea in Saturnshine sur le site de la NASA.</a></div>
PIA08986: Rhea in Saturnshine
<h1>PIA09019: Craters in Relief</h1><div class="PIA09019" lang="en" style="width:448px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Large and medium-sized impact basins on Rhea's trailing hemisphere are thrown into sharp relief by the grazing rays of the Sun. Bright, wispy features reach across the surface from the east.</p><p>This view shows roughly the same region as the color view <a href="/catalog/PIA06578">PIA06578</a>.</p><p>North on Rhea (1,528 kilometers, or 949 miles across) is up and rotated 12 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 acquired at a distance of approximately 783,000 kilometers (487,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 76 degrees. Image scale is 5 kilometers (3 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09019" onclick="window.open(this.href); return false;" title="Voir l'image PIA09019: Craters in Relief sur le site de la NASA">Voir l'image PIA09019: Craters in Relief sur le site de la NASA.</a></div>
PIA09019: Craters in Relief
<h1>PIA09725: A Defining Feature</h1><div class="PIA09725" lang="en" style="width:446px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Bright, wispy markings cover the trailing hemisphere of Rhea. The features are thought to be similar in nature to the bright, icy canyons seen on Dione (see <a href="/catalog/PIA06162">PIA06162</a>).</p><p>North on Rhea (1,528 kilometers, 949 miles across) is up and rotated 17 degrees to the left.</p><p>The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on July 22, 2007. The view was acquired at a distance of approximately 1.2 million kilometers (700,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 42 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>.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09725" onclick="window.open(this.href); return false;" title="Voir l'image PIA09725: A Defining Feature sur le site de la NASA">Voir l'image PIA09725: A Defining Feature sur le site de la NASA.</a></div>
PIA09725: A Defining Feature
<h1>PIA09738: Depth of Field</h1><div class="PIA09738" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Cassini puts the enormous distances in the Saturn system in perspective with this view of Rhea and Prometheus.</p><p>Rhea (1,528 kilometers, or 949 miles across) sits in the foreground, while Prometheus (102 kilometers, or 63 miles across) lingers barely visible near the rings about 400,000 kilometers (250,000 miles) beyond. Saturn's cloud tops are about 80,000 kilometers (50,000 miles) farther still.</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. 13, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 750 nanometers. The view was acquired at a distance of approximately 4.1 million kilometers (2.5 million miles) from Saturn. Image scale is 24 kilometers (15 miles) per pixel on Saturn and 21 kilometers (13 miles) per pixel on Rhea.</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/PIA09738" onclick="window.open(this.href); return false;" title="Voir l'image PIA09738: Depth of Field sur le site de la NASA">Voir l'image PIA09738: Depth of Field sur le site de la NASA.</a></div>
PIA09738: Depth of Field
<h1>PIA09740: Banded Giant</h1><div class="PIA09740" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea transits the banded clouds of the Ringed Planet. The edge-on rings cast curved shadows onto Saturn's northern hemisphere. More subtle than the ring shadows, the zonal jet streams of Saturn stripe its globe.</p><p>Rhea is 1,528 kilometers (949 miles) across. Mimas (397 kilometers, or 247 miles across) sits on the far side of the ringplane, near right.</p><p>The image was taken in visible blue light with the Cassini spacecraft wide-angle camera on Aug. 13, 2007. The view was acquired at a distance of approximately 4.1 million kilometers (2.5 million miles) from Saturn. Image scale is 240 kilometers (149 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/PIA09740" onclick="window.open(this.href); return false;" title="Voir l'image PIA09740: Banded Giant sur le site de la NASA">Voir l'image PIA09740: Banded Giant sur le site de la NASA.</a></div>
PIA09740: Banded Giant
<h1>PIA09743: Icy Interloper</h1><div class="PIA09743" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea enters the Cassini spacecraft's field of view and glides lazily across the scene as the spacecraft observes Saturn's restless atmosphere.</p><p>Rhea is 1,528 kilometers (949 miles) across.</p><p>This view looks toward the unilluminated side of the rings from less than a degree above the ringplane. The rings form a dark line across center and cast shadows onto the northern half of this view. The A ring and B ring cast the darker shadows compared to the C ring and the Cassini division, which are less dense.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Aug. 13, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 750 nanometers. The view was obtained at a distance of approximately 4.1 million kilometers (2.5 million miles) from Saturn. Image scale is 24 kilometers (15 miles) per pixel on Saturn and 21 kilometers (13 miles) per pixel on Rhea.</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/PIA09743" onclick="window.open(this.href); return false;" title="Voir l'image PIA09743: Icy Interloper sur le site de la NASA">Voir l'image PIA09743: Icy Interloper sur le site de la NASA.</a></div>
PIA09743: Icy Interloper
<h1>PIA09794: Rhea Detached</h1><div class="PIA09794" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea is frozen in this Cassini portrait, captured just before it glided in front of Saturn's northern hemisphere. The wispy streaks on Rhea's trailing side are partly visible in the west.</p><p>This view looks toward the anti-Saturn side of Rhea (1,528 kilometers, or 949 miles across). North is up. </p><p>The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on Sept. 9, 2007. The view was acquired at a distance of approximately 2.8 million kilometers (1.7 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 33 degrees. Image scale is 17 kilometers (10 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/PIA09794" onclick="window.open(this.href); return false;" title="Voir l'image PIA09794: Rhea Detached sur le site de la NASA">Voir l'image PIA09794: Rhea Detached sur le site de la NASA.</a></div>
PIA09794: Rhea Detached
<h1>PIA09795: Obscure Moon</h1><div class="PIA09795" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Just before Rhea slipped behind Saturn, the Cassini spacecraft captured the moon in its disappearing act.</p><p>Along with the partly obscured Rhea (1,528 kilometers, or 949 miles across) are Tethys (1,071 kilometers, or 665 miles across), at right, and Enceladus (505 kilometers, or 314 miles across), left of Tethys. </p><p>At the wavelength in which this image was taken, absorption of sunlight by methane gas in Saturn's atmosphere is strong, causing the planet to appear darker than at other wavelengths. </p><p>This view looks toward the unilluminated side of the rings from about 4 degrees above the ringplane. The image was taken with the Cassini spacecraft wide-angle camera on Nov. 9, 2007 using a spectral filter sensitive to wavelengths of infrared light centered at 890 nanometers. The view was acquired at a distance of approximately 2.8 million kilometers (1.7 million miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 44 degrees. Image scale is 162 kilometers (101 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/PIA09795" onclick="window.open(this.href); return false;" title="Voir l'image PIA09795: Obscure Moon sur le site de la NASA">Voir l'image PIA09795: Obscure Moon sur le site de la NASA.</a></div>
PIA09795: Obscure Moon
<h1>PIA09799: Rhea's Pitted Profile</h1><div class="PIA09799" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The low illumination angle near the terminator makes visible the steep topography of craters on Rhea's battered surface. </p><p>This view is centered on 10 degrees north latitude, 128 degrees west longitude. North on Rhea (1,528 kilometers, 949 miles across) is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Nov. 16, 2007. The view was obtained at a distance of approximately 313,000 kilometers (195,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 128 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">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/PIA09799" onclick="window.open(this.href); return false;" title="Voir l'image PIA09799: Rhea's Pitted Profile sur le site de la NASA">Voir l'image PIA09799: Rhea's Pitted Profile sur le site de la NASA.</a></div>
PIA09799: Rhea's Pitted Profile
<h1>PIA09809: Wisp-covered Rhea</h1><div class="PIA09809" lang="en" style="width:314px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Wispy markings on Rhea reach across the moon's icy surface. The Tirawa impact basin is seen straddling the terminator at upper right. The crater is about 360 kilometers (220 miles) across.</p><p>This view looks toward the anti-Saturn side of Rhea (1,528 kilometers, or 949 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Nov. 29, 2007. The view was obtained at a distance of approximately 1.3 million kilometers (800,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 37 degrees. Image scale is 8 kilometers (5 miles) per pixel.</p><p>The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.</p><p>For more information about the Cassini-Huygens mission visit <a href="http://saturn.jpl.nasa.gov">http://saturn.jpl.nasa.gov/home/index.cfm</a>. The Cassini imaging team homepage is at <a href="http://ciclops.org">http://ciclops.org</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09809" onclick="window.open(this.href); return false;" title="Voir l'image PIA09809: Wisp-covered Rhea sur le site de la NASA">Voir l'image PIA09809: Wisp-covered Rhea sur le site de la NASA.</a></div>
PIA09809: Wisp-covered Rhea
<h1>PIA09819: North on Rhea</h1><div class="PIA09819" lang="en" style="width:666px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft looks down onto middle northern latitudes on Rhea. The large Tirawa basin is seen on the terminator at right.</p><p>Lit terrain seen here is primarily on the trailing side of Rhea (1,528 kilometers, or 949 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 17, 2007. The view was obtained at a distance of approximately 539,000 kilometers (335,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 79 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09819" onclick="window.open(this.href); return false;" title="Voir l'image PIA09819: North on Rhea sur le site de la NASA">Voir l'image PIA09819: North on Rhea sur le site de la NASA.</a></div>
PIA09819: North on Rhea
<h1>PIA09825: Icy Moonlight</h1><div class="PIA09825" lang="en" style="width:481px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft examines the icy, crater-saturated face of Rhea.</p><p>This view looks toward the anti-Saturn side of Rhea (1,528 kilometers, or 949 miles across). North is up.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Dec. 21, 2007 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was obtained at a distance of approximately 890,000 kilometers (553,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 16 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/PIA09825" onclick="window.open(this.href); return false;" title="Voir l'image PIA09825: Icy Moonlight sur le site de la NASA">Voir l'image PIA09825: Icy Moonlight sur le site de la NASA.</a></div>
PIA09825: Icy Moonlight
<h1>PIA09827: Trailing Rhea</h1><div class="PIA09827" lang="en" style="width:262px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft observes the wispy terrain that covers the trailing side of Rhea.</p><p>North on Rhea (1,528 kilometers, or 949 miles across) is up and rotated 27 degrees to the right.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 22, 2007. The view was obtained at a distance of approximately 1.9 million kilometers (1.2 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 22 degrees. 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 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/PIA09827" onclick="window.open(this.href); return false;" title="Voir l'image PIA09827: Trailing Rhea sur le site de la NASA">Voir l'image PIA09827: Trailing Rhea sur le site de la NASA.</a></div>
PIA09827: Trailing Rhea
<h1>PIA09841: The Rays of Rhea</h1><div class="PIA09841" lang="en" style="width:725px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft views Rhea and the bright, rayed crater that is likely one of the younger features on the moon's surface. The impact excavated fresh material from beneath the ground, which spread out in this pattern as it fell back to Rhea.</p><p>This view, centered on 12 degrees south latitude, 133 degrees west longitude, predominately encompasses the anti-Saturn side on Rhea's leading hemisphere. North is up and rotated 28 degrees to the right. Icy Rhea is 1,528 kilometers (949 miles) across.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Jan. 17, 2008 using a combination of spectral filters sensitive to wavelengths of polarized green light centered at 617 and 568 nanometers. The view was obtained at a distance of approximately 538,000 kilometers (334,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 9 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09841" onclick="window.open(this.href); return false;" title="Voir l'image PIA09841: The Rays of Rhea sur le site de la NASA">Voir l'image PIA09841: The Rays of Rhea sur le site de la NASA.</a></div>
PIA09841: The Rays of Rhea
<h1>PIA09844: Background Planet</h1><div class="PIA09844" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Rhea drifts in front of Saturn. The battered, icy moon is seen here near the western limb of the planet's northern hemisphere.</p><p>This image was taken eight hours after <a href="/catalog/PIA09841">PIA09841</a>. The view looks toward the anti-Saturn side of Rhea (1,528 kilometers, or 949 miles across). North is up.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on Jan. 17, 2008 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was acquired at a distance of approximately 576,000 kilometers (358,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 12 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>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09844" onclick="window.open(this.href); return false;" title="Voir l'image PIA09844: Background Planet sur le site de la NASA">Voir l'image PIA09844: Background Planet sur le site de la NASA.</a></div>
PIA09844: Background Planet
<h1>PIA09884: Soaring Over Rhea</h1><div class="PIA09884" lang="en" style="width:406px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft takes a northern view of Rhea, spying the large Tirawa impact basin left of center.</p><p>The moon's noted bright-rayed crater can be seen at bottom. See <a href="/catalog/PIA08148">PIA08148</a> for a more southerly view of this same region.</p><p>Lit terrain seen here is on the anti-Saturn side of Rhea (1,528 kilometers, or 949 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 20, 2008. The view was acquired at a distance of approximately 1.1 million kilometers (652,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 74 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/PIA09884" onclick="window.open(this.href); return false;" title="Voir l'image PIA09884: Soaring Over Rhea sur le site de la NASA">Voir l'image PIA09884: Soaring Over Rhea sur le site de la NASA.</a></div>
PIA09884: Soaring Over Rhea
<h1>PIA09895: Ancient Plains of Rhea</h1><div class="PIA09895" lang="en" style="width:385px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Densely cratered plains cover the ancient surface of Saturn's moon Rhea.</p><p>Following the Voyager spacecraft encounters with Saturn, cryovolcanism was suggested as a source for the wispy markings on both Rhea and Dione. Cassini has shown that Rhea's bright streaks are, like those on Dione, tectonic features. Planetary scientists now think it is unlikely that cryovolcanic activity has ever occurred on this moon.</p><p>This view looks toward the trailing hemisphere of Rhea (1,528 kilometers, or 949 miles across). North is up.</p><p>The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 4, 2008. The view was acquired at a distance of approximately 1.2 million kilometers (735,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 39 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/PIA09895" onclick="window.open(this.href); return false;" title="Voir l'image PIA09895: Ancient Plains of Rhea sur le site de la NASA">Voir l'image PIA09895: Ancient Plains of Rhea sur le site de la NASA.</a></div>
PIA09895: Ancient Plains of Rhea
<h1>PIA09898: South on Rhea</h1><div class="PIA09898" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Cassini spacecraft surveys the south polar region of icy Rhea.</p><p>This is a similar view to <a href="/catalog/PIA07572">PIA07572</a>. This view is a bit farther south and has slightly different solar illumination.</p><p>Cassini flybys have shown that Rhea is not differentiated, or separated into distinct layers; instead, it appears to be a mixture of approximately 75 percent ices and 25 percent rock and metal.</p><p>Saturn's second-largest moon, Rhea is 1,528 kilometers (949 miles) wide.</p><p>The image was taken with the Cassini spacecraft narrow-angle camera on April 12, 2008 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was acquired at a distance of approximately 345,000 kilometers (214,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 73 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/PIA09898" onclick="window.open(this.href); return false;" title="Voir l'image PIA09898: South on Rhea sur le site de la NASA">Voir l'image PIA09898: South on Rhea sur le site de la NASA.</a></div>
PIA09898: South on Rhea
PIA10246