| Ultimi arrivi - Saturn: the "Ringed Beauty" and His Moons |
Saturn_s Clouds-V1-PIA00026_modest.jpgSaturn's Clouds from Voyager 156 visiteCaption NASA originale:"Two brown ovals, at right, some 10,000 kilometers (6,000 miles) across, were found at approximately 40` and 60` latitude in Saturn's northern hemisphere by Voyager l. The photo was taken on November 7, 1980, from a range of 7.500.000 Km. The polar oval (upper right) has a structure similar to the Saturn red spot located in the southern polar latitudes". Ago 31, 2004
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Saturn-V2-PIA00030_modest.jpgSaturn from approx. 33.900.000 Km - Voyager 256 visiteCaption NASA originale:"NASA's Voyager 2 took this 'true color' photograph of Saturn on July 21, 1981, when the spacecraft was 33.900.000 Km from the planet. Two bright, presumably convective cloud patterns are visible in the mid-northern hemisphere and several dark spoke-like features can be seen in the broad B-ring (left of planet). The moons Rhea and Dione appear as blue dots to the south and southeast of Saturn, respectively. Voyager 2 made its closest approach to Saturn on Aug. 25, 1981".Ago 31, 2004
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Saturn_s Clouds-HST-PIA01464_modest.jpgSaturn's Clouds from Hubble Space Telescope54 visiteCaption NASA originale:"This NASA Hubble Space Telescope image of the ringed planet Saturn shows a rare storm that appears as a white arrowhead-shaped feature near the planet's equator. The storm is generated by an upwelling of warmer air, similar to a terrestrial thunderhead. The east-west extent of this storm is equal to the diameter of the Earth (about 7,900 miles). Hubble provides new details about the effects of Saturn's prevailing winds on the storm. The new image shows that the storm's motion and size have changed little since its discovery in September, 1994".Ago 31, 2004
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Saturn_s Clouds-V2-PIA01379_modest.jpgSaturn's Clouds from Voyager 254 visiteCaption NASA originale:"A vortex, or large atmospheric storm, is visible at 74` north latitude in this color composite of Voyager 2 Saturn images obtained on Aug. 25, 1980, from a range of about 1.000.000 Km. This particular storm system seems to be one of the few large-scale structures in Saturn's polar region, which otherwise is dominated by much smaller-scale features suggesting convection. The darker, bluish structure (upper right) oriented east to west strongly suggests the presence of a jet stream at these high latitudes". Ago 31, 2004
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Saturn_s Clouds-V1&V2-PIA01375_modest.jpgSaturn's Clouds from Voyager 1 and Voyager 255 visiteCaption NASA originale:"This comparison shows Saturn’s north temperate region as viewed on Nov. 5, 1980, by Voyager 1 (left) and Aug. 21, 1980, by its sister craft, Voyager 2, from a range of 5.000.000 Km; the large bright oval feature in the lower right of each frame measures about 2.500 Km. The largest bright feature in the Voyager 1 photograph extends about 7.500 Km from north to south. These giant storms lie within one of the strongest westward-flowing currents observed in the atmosphere, with wind speeds of about 20 mt p/s".Ago 31, 2004
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Saturn_s Clouds-V2-PIA01958_modest.jpgSaturn's Clouds from Voyager 255 visiteCaption NASA originale:"In this Voyager 2 observation of Saturn’s northern mid-latitudes is seen a strangely curled cloud attached by a thin ribbon to the bright white cloud region to the north. The cloud has been monitored for seven rotations around the planet. It appears to be forming a closed loop. Other discrete clouds are seen to the east. Also evident is the “ribbonlike” structure at 47 north latitude in the white cloud region. The spacecraft took this image from a distance of about 9.300.000 Km".Ago 31, 2004
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Saturn_s Clouds-V1-PIA00027_modest.jpgSaturn's Clouds from Voyager 155 visitecaption NASA originale:"This image was obtained on November 10, 1980 when Voyager 1 was at a distance of 3,500,000 kilometers (2,200,000 miles) from Saturn. The smallest resolved features in this photograph are 65 kilometers (40 miles) in diameter. Images with similar resolution indicate that Saturn's circulation is somewhat different from Jupiter's. The maximum westward velocities seen on Saturn are located in the middle of the darker regions, while on Jupiter they are located at the poleward interface between belts and zones". Ago 31, 2004
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Saturn-HST-1996upto2000-PIA03156_modest.jpgSaturn from Hubble Space Telescope (1996 - 2000)53 visiteCaption NASA originale:"...Looming like a giant flying saucer in our outer solar system, Saturn puts on a show as the planet and its magnificent ring system nod majestically over the course of its 29-year journey around the Sun. These Hubble Space Telescope images, captured from 1996 to 2000, show Saturn's rings open up from just past edge-on to nearly fully open as it moves from autumn towards winter in its Northern Hemisphere..."Ago 29, 2004
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Saturn-HST-Oct1996-PIA03158_modest.jpgSaturn from Hubble Space Telescope (Oct. 1996)54 visitenessun commentoAgo 29, 2004
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Saturn-HST-Oct1997-PIA03159_modest.jpgSaturn from Hubble Space Telescope (Oct. 1997)54 visitenessun commentoAgo 29, 2004
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Saturn-HST-Oct1998-PIA03160_modest.jpgSaturn from Hubble Space Telescope (Oct. 1998)54 visitenessun commentoAgo 29, 2004
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Saturn-HST-Oct1999-PIA03161_modest.jpgSaturn from Hubble Space Telescope (Oct. 1999)54 visitenessun commentoAgo 29, 2004
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