| Ultimi arrivi - Saturn: the "Ringed Beauty" and His Moons |
Rhea-N00043426.jpgHills, Knobs and Craters57 visiteN00043426.jpg was taken on November 26, 2005 and received on Earth November 28, 2005. The camera was pointing toward Rhea that, at the time, was approximately 691 Km away.
The image was taken using the CL1 and CL2 filters.Nov 28, 2005
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Rhea-N00043425.jpgSlopes, Valleys and Craters60 visiteN00043425.jpg was taken on November 26, 2005 and received on Earth November 28, 2005. The camera was pointing toward Rhea that, at the time, was approximately 691 Km away.
The image was taken using the CL1 and CL2 filters.Nov 28, 2005
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Rhea-W00012124.jpgThe Mountains of Rhea59 visiteW00012124.jpg was taken on November 26, 2005 and received on Earth November 28, 2005. The camera was pointing toward Rhea that, at the time, was approximately 531 Km away. The image was taken using the CL1 and CL2 filters.Nov 28, 2005
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Enceladus-N00043439.jpgThe Sun behind Enceladus60 visiteN00043439.jpg was taken on November 27, 2005 and received on Earth November 28, 2005. The camera was pointing toward Enceladus that, at the time, was approximately 149.146 Km away.
The image was taken using the CL1 and CL2 filters.Nov 28, 2005
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Rhea-N00043273.jpgApproaching Rhea (3)58 visiteSpettacolare la nitidezza di alcuni rilievi posti lungo il Terminatore; da notare una sostanziale mancanza di photographic artifacts i quali invece - di regola - caratterizzano questo tipo di immagini. Lo streak di luce che si vede alla Sx di Rhea (circa ore 10 del frame) potrebbe essere un raggio cosmico.
"...Rhea is the largest airless satellite in the Saturnian System. It is an icy body with a low density, which indicates that it is composed of a rocky core taking up less than 1/3rd of the moon's mass, with the rest composed of water-ice. Rhea is somewhat similar to Dione: they both have similar composition, albedo features, varied terrain and synchronous rotations. Rhea is heavily cratered with bright wispy markings. Its surface can be divided into 2 geologically different areas based on crater density. The 1st area contains craters that are larger than 40 Km in diameter while the 2nd area, spanning over parts of the Polar and Equatorial Regions, has craters under 40 Km in diameter and this suggests that a major resurfacing event occurred some time during its formation.Nov 27, 2005
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Rhea-N00043271.jpgApproaching Rhea (2)58 visiteIn the outpost of the Saturn System the moon Rhea waits for the Cassini spacecraft. On Saturday, Nov. 26, 2005, the spacecraft will come within 500 Km (about 310 miles) of its surface. Rhea's cratered surface looks in some ways similar to our own Moon, or the planet Mercury. But make no mistake: Rhea's icy exterior would quickly melt if this moon were brought as close to the Sun as Mercury.
N00043271.jpg was taken on November 26, 2005, and received on Earth on November 27, 2005. The camera was pointing toward Rhea that, at the time, was distant approximately 172.530 Km from the spaceship. The image was taken using the UV1 and CL2 filters.Nov 27, 2005
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Rhea-N00043262~0.jpgApproaching Rhea (1)57 visiteN00043262.jpg was taken on November 26, 2005 and received on Earth on the same date. The camera was pointing toward Rhea from a distance of about 291.020 Km. The image was taken using the UV2 and CL2 filters.Nov 27, 2005
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Mimas-PIA07639.jpgThe "Eye" of Mimas: Herschel Crater in the Sun-light57 visiteImpact-battered Mimas steps in front of Saturn's Rings, showing off its giant 130-Km (about 80-mile) wide Herschel Crater.
The illuminated terrain seen here is on the moon's Leading Hemisphere. North on Mimas is up and rotated 20° to the left.
The image was taken in visible green light with the Cassini narrow-angle camera on Oct. 13, 2005 at a distance of approx. 711.000 Km (roughly 442.000 miles) from Mimas and at a phase angle of 112°.
The image approx. scale is 4 Km (about 3 miles) per pixel.Nov 26, 2005
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Dione-PIA07637.jpgDione: over the clouds of Saturn58 visiteOriginal caption:"Cassini prepared for its rendezvous with Dione on Oct. 11, 2005, capturing the brilliant, cratered iceball in front of its shadow-draped planet. The terrain seen here becomes notably darker toward the West, and is crosscut by the bright, fresh canyons that form wispy markings on Dione's Trailing Hemisphere.
The image was taken in visible light with the Cassini wide-angle camera at a distance of approx. 24.500 Km (about 15.200 miles) from Dione and at a phase angle of 22°. The image scale is about 2 Km (about 1 mile) per pixel".Nov 25, 2005
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Dione-PIA07638.jpgDione: Carthage Linea65 visiteDione's icy surface is scarred by craters and sliced up by multiple generations of geologically-young bright fractures. Numerous fine, roughly-parallel linear grooves run across the terrain in the upper left corner. Most of the craters seen here have bright walls and dark deposits of material on their floors. As on other Saturnian moons, rockslides on Dione may reveal cleaner ice, while the darker materials accumulate in areas of lower topography and lower slope (e.g. crater floors and the bases of scarps).
The terrain seen here is centered at 15,4° North Latitude, 330,3° West Longitude, in a Region called Carthage Linea. North on Dione is up and rotated 50° to the left.
The image was taken in visible green light with the Cassini narrow-angle camera on Oct. 11, 2005, at a distance of approx. 19.600 Km (roughly 12.200 miles) from Dione. The image scale is about 230 mt (760 feet) per pixel".Nov 25, 2005
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Calypso-PIA07633.jpgCalypso (in false colors)57 visiteThis color image provides the best look yet at Saturn's moon Calypso, a Trojan of the larger moon Tethys. Calypso trails Tethys in its orbit by 60°. Telesto is the other Tethys Trojan, orbiting Saturn 60°ahead of Tethys. Calypso is only 22 Km (about 14 miles) across. Calypso, like many other small Saturnian moons and small asteroids, is irregularly shaped by overlapping large craters. Although the resolution here is not as high as in Cassini's best images of Pandora and Telesto, this moon appears to also have loose surface material capable of smoothing the appearance of craters. (...) The images were taken with the Cassini spacecraft narrow-angle camera on Sept. 23, 2005, at a distance of approx. 101.000 Km (about 63.000 mi) from Calypso and at a phase angle of 61°. Resolution in the original image was 602 mt per pixel (...) ".
Nota: notiamo un'incredibile somiglianza fra Calypso e l'asteroide 433-Eros. Coincidenza, o c'è una sorta di "marchio di fabbrica" che unisce le piccole lune agli asteroidi?Nov 18, 2005
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Japetus-N00043118.jpgJapetus' "smile"...56 visiteOriginal caption:"N00043118.jpg was taken on November 16, 2005 and received on Earth November 17, 2005. The camera was pointing toward IAPETUS at approximately 806.360 kilometers away, and the image was taken using the CL1 and IR1 filters".Nov 18, 2005
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