Galerie de photosde Titania, satellite de Uranus

<h1>PIA00036: Titania High-Resolution Color Composite</h1><div class="PIA00036" lang="en" style="width:700px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This high-resolution color composite of Titania was made from Voyager 2 images taken Jan. 24, 1986, as the spacecraft neared its closest approach to Uranus. Voyager's narrow-angle camera acquired this image of Titania, one of the large moons of Uranus, through the violet and clear filters. The spacecraft was about 500,000 kilometers (300,000 miles) away; the picture shows details about 9 km (6 mi) in size. Titania has a diameter of about 1,600 km (1,000 mi). In addition to many scars due to impacts, Titania displays evidence of other geologic activity at some point in its history. The large, trenchlike feature near the terminator (day-night boundary) at middle right suggests at least one episode of tectonic activity. Another, basinlike structure near the upper right is evidence of an ancient period of heavy impact activity. The neutral gray color of Titania is characteristic of the Uranian satellites as a whole. The Voyager project is managed for NASA by the Jet Propulsion Laboratory.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA00036" onclick="window.open(this.href); return false;" title="Voir l'image PIA00036: Titania High-Resolution Color Composite sur le site de la NASA">Voir l'image PIA00036: Titania High-Resolution Color Composite sur le site de la NASA.</a></div>
PIA00036: Titania High-Resolution Color Composite
<h1>PIA00039: Titania - Highest Resolution Voyager Picture</h1><div class="PIA00039" lang="en" style="width:640px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This is the highest-resolution picture of Titania returned by Voyager 2. The picture is a composite of two images taken Jan. 24, 1986, through the clear filter of Voyager's narrow-angle camera. At the time, the spacecraft was 369,000 kilometers (229,000 miles) from the Uranian moon; the resolution was 13 km (8 mi). Titania is the largest satellite of Uranus, with a diameter of a little more than 1,600 km (1,000 mi). Abundant impact craters of many sizes pockmark the ancient surface. The most prominent features are fault valleys that stretch across Titania. They are up to 1,500 km (nearly 1,000 mi) long and as much as 75 km (45 mi) wide. In valleys seen at right-center, the sunward-facing walls are very bright. While this is due partly to the lighting angle, the brightness also indicates the presence of a lighter material, possibly young frost deposits. An impact crater more than 200 km (125 mi) in diameter distinguishes the very bottom of the disk; the crater is cut by a younger fault valley more than 100 km (60 mi) wide. An even larger impact crater, perhaps 300 km (180 mi) across, is visible at top. The Voyager project is managed for NASA by the Jet Propulsion Laboratory.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA00039" onclick="window.open(this.href); return false;" title="Voir l'image PIA00039: Titania - Highest Resolution Voyager Picture sur le site de la NASA">Voir l'image PIA00039: Titania - Highest Resolution Voyager Picture sur le site de la NASA.</a></div>
PIA00039: Titania - Highest Resolution Voyager Picture
<h1>PIA01978: Uranus Moon - Titania</h1><div class="PIA01978" lang="en" style="width:150px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The terminator region of Titania, one of Uranus' five large moons, was captured in this Voyager 2 image obtained in the early morning hours of Jan. 24, 1986. Voyager was about 500,000 kilometers (300,000 miles) from Titania and inbound toward closest approach. This clear-filter, narrow-angle view is along the terminator -- the line between the sunlit and darkened parts of the moon. The low-angle illumination shows the shape of the surface very clearly. Among the features visible are long linear valleys perhaps 50-100 km (30-60 mi) wide and several hundred km (or mi) long. At least two directions of faulting are visible, as are many circular impact craters attributed to cosmic debris. The resolution of this image is about 9 km (6 mi). The Voyager project is managed for NASA by the Jet Propulsion Laboratory.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01978" onclick="window.open(this.href); return false;" title="Voir l'image PIA01978: Uranus Moon - Titania sur le site de la NASA">Voir l'image PIA01978: Uranus Moon - Titania sur le site de la NASA.</a></div>
PIA01978: Uranus Moon - Titania
<h1>PIA01979: Full-disk View of Titania</h1><div class="PIA01979" lang="en" style="width:784px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>Voyager 2 obtained this full-disk view of Uranus' moon Titania in the early morning hours of Jan. 24, 1986, from a distance of about 500,000 kilometers (300,000 miles). Many circular depressions -- probably impact craters -- are visible in this clear-filter image returned by the Voyager narrow-angle camera. Other bright spots are distinguished by radiating rays and are probably halo craters that mark relatively more recent impacts. Even more interesting are linear troughs (right) that are probably fault canyons. The troughs break the crust in two directions, an indication of some tectonic extension of Titania's crust. These features indicate that this icy satellite has a dynamic, active interior. Titania is about 1,600 km (1,000 mi) in diameter; the resolution of this image is about 9 km (6 mi). The Voyager project is managed for NASA by the Jet Propulsion Laboratory.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01979" onclick="window.open(this.href); return false;" title="Voir l'image PIA01979: Full-disk View of Titania sur le site de la NASA">Voir l'image PIA01979: Full-disk View of Titania sur le site de la NASA.</a></div>
PIA01979: Full-disk View of Titania
Uranus_Titania_2.jpg
Uranus_Titania_2.jpg