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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".
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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".
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Saturn-V2-PIA00030_modest.jpgSaturn from approx. 33.900.000 Km - Voyager 254 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".
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Japetus from 2.900.000 Km - PIA06466_modest.jpgTwo-faced Japetus54 visiteCaption NASA originale:"The dark material that coats one hemisphere of Saturn's moon Iapetus is very dark, as these two processed views of the same frame can demonstrate.
The image on the left has been cleaned of cosmic rays and magnified; in this otherwise un-enhanced view, only a small part of the moon's surface, at the bottom, is visible because it is part of the bright side of Iapetus. (Only the right hand side of Iapetus is illuminated by sunlight.) The same image, shown on the right, has been contrast-enhanced to make visible the part of the illuminated side of Iapetus that is coated with dark material".
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OPP-SOL212-1N147014572EFF35BGP1926L0M1.jpgThe Rim of Endurance Crater at Sunset - Sol 21254 visiteQuello che avevamo notato per Spirit, lo ribadiamo per Opportunity: nei primi mesi di permanenza su Marte, la fotografia del Cielo Marziano era un fenomeno rarissimo. Adesso gli scorci o i primi piani si sprecano. Forse gli Scienziati del Centro Controllo Missione si sono stancati di guardare rocce e sabbie oppure, molto probabilmente, devono essersi accorti che il cielo di un altro pianeta non è poi un soggetto così banale e privo di possibili interessi e, magari, sorprese...
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OPP-SOL210-1P146824476EFF35BGP2567L2M1.jpgThe "Dunes" of Endurance (1) - Sol 21054 visiteUna sequenza di 4 frames relativi alle "dune" che giacciono sul fondo di Endurance Crater e, presumibilmente, sul fondo di quasi tutti i crateri Marziani. Le riprese che Vi proponiamo sono state effettuate con diversi filtri/colore, in maniera tale da mettere in maggiore evidenza, di volta in volta, diversi dettagli.
In tutta onestà, queste "dune" sono davvero difficili da affrontare, ma noi proveremo a fare un'ipotesi.
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SOL237-2N147412120EFF8612P1881L0M1.jpgRocky Hills - Landscape (1) - Sol 23754 visitenessun commento
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SOL237-2N147412170EFF8612P1881R0M1.jpgRocky Hills - Landscape (2) - Sol 23754 visitenessun commento
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SOL237-2N147412222EFF8612P1881L0M1.jpgRocky Hills - Landscape (3) - Sol 23754 visitenessun commento
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SOL237-2N147401769EFF8600P1554L0M1.jpgMartian Sky - Sol 23754 visitenessun commento
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OPP-SOL217-1N147434125EFF35BGP1555L0M1.jpgSky over Endurance Crater - Sol 21754 visitenessun commento
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SOL239-2N147592472EFF8800P0506L0M1.jpgRocky Hills - Landscape (8) - Sol 23954 visitenessun commento
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