A Tribute To Mars Global Surveyor
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Echus_Chasma-PIA08022-2-PCF-LXTT.jpgEchus Chasma (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)70 visitenessun commentoMareKromium
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Elysium_Planitia-M1103342.jpgFeatures of Elysium Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)208 visitenessun commentoMareKromium
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Flow_Features-Zephyria_Planum-PIA03066.jpgFlow Features in Zephyria Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 242 visiteOriginal caption:"This MGS-MOC image shows the broken, platy texture of Flow Surfaces in the Zephyria Region of Mars. Some investigators have suggested that these materials represent the remains of an ice-covered lake; others suggest that these are the Surfaces of hardened Lava that - when it was erupting - was very hot and fluid. Although not illustrated here, a key piece of evidence against the ice-covered lake hypothesis is that there are some small Craters formed on these Surfaces, and some of them have Boulders in their Ejecta Blanket. The Boulders indicate that the material is rock-solid".
Location near: 5,3° North Lat. and 208,6° West Long.
Image width: width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern AutumnMareKromium
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Flow_Features-Zephyria_Planum.jpgFlow Features in Zephyria Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 247 visiteOriginal caption:"This MGS-MOC image shows the solidified remains of Flows — probably Lava, but possibly Mud — in the Zephyria Region of Mars, south of Cerberus Fossae".
Location near: 5,2° North Lat. and 203,6° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern AutumnMareKromium
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Gullies-Hale_Crater-R07-02277_R13-01791_S16-01780_fig.jpgGullies in Hale Crater (False Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)53 visiteThe MGS-MOC captured 2 examples of gullies on crater walls in which a change occurred between 1999 and 2005.
In each case, one in Terra Sirenum, the other in the Centauri Montes, new light-toned material was deposited during the MGS Mission. These new light-toned deposits may be indicators that water flowed at these two gully sites during the past few years. Naturally, a question arises: are there other gullies at which similar light-toned deposits have formed?
To answer the question, the MOC Team at MSSS reviewed every MOC image ever taken of a Martian Gully. Most of the gullies occur at middle latitudes in both the Northern and Southern Hemispheres. This re-examination turned up several good examples of other light-toned materials deposited in gullies. However, in none of these cases is there a “before” image, with no light-toned material, followed by an “after” image in which new light-toned material had appeared. Thus, one cannot know how long ago these other light-toned deposits formed.
However, these are excellent candidates for future monitoring with orbiter cameras that have sufficient spatial resolution to look for new light-toned deposits, should they form during the coming years.
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Gullies-Hellas_Planitia-MGS~2.jpgGullies in Hellas Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr G. Barca - Lunexit Team)54 visiteCaption NASA originale:"This MGS-MOC image shows neighboring networks of gullies in the NorthWestern wall of a South, middle-latitude, crater West of Hellas Planitia. The faint crisscrossing streaks, also observed on the wall of the crater, are evidence of passing Dust Devils, a common phenomena in this Region.
The gullies might have formed by erosion caused by running water, mixed with debris".
Location near: 54,0° South; 337,1° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerMareKromium
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Hellas_Planitia-MGS~0.jpgFeatures of Hellas Planitia: the "Martian Freeways" (Saturated Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)54 visiteCaption NASA originale:"This MGS-MOC image shows an example of the extremely odd, seemingly scrambled layered rocks exposed by erosion near the deepest part of the deepest basin on Mars: Hellas. This pattern of eroded, and perhaps deformed layers was once exposed to the martian surface, then buried, and more recently exposed again. The story behind these layers is not really understood; some members of the MOC team have — for nearly 9 years now —taken to calling these features, "taffy-pull terrain".
Location near: 43,1° South; 307,3° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Spring
Nota Lunexit: immagini come questa, a parte la loro intrinseca bellezza e la grande suggestione che riescono ad infondere in chi le guarda, hanno un Valore immenso.
Tuttavia, di quando in quando, qualche pseudo-scienziato dice che le immagini in arrivo dallo Spazio (TUTTE le immagini, senza eccezioni) sono "sostanzialmente inutili a fini di ricerca scientifica".
Noi non comprendiamo la ratio di questa frase che - onestamente - è tanto "ad effetto", quanto vuota e stupida; però una cosa ci va di dirla: forse le immagini in arrivo dallo Spazio "non servono" alla Ricerca Scientifica. Forse.
Ma CERTAMENTE non servono alla predetta Ricerca degli pseudo-scienziati (probabilmente dei ricercatori universitari falliti o fallendi) che, quando gli "gira", proferiscono impunemente (dall'alto della loro stratosferica ignoranza) simili assurdità.
Vere e proprie bestemmie, insomma, specie se si pensa a QUANTE VITE e QUANTI SOLDI sono costate e costano le "scientificamente inutili" immagini che ci arrivano dal resto del Sistema Solare.
Morale: certa gente dovrebbe solo tacere, rivoltarsi nel proprio guano e vergognarsi.MareKromium
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Hellas_Planitia-MGS~1.jpgValley in Hellas Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 54 visiteCaption originale:"This MGS-MOC image shows a valley which has become partially-filled with material. It is located West of Hellas Planitia. The valley, entering the scene from the East (lower side), turns toward the South-West (upper right) and splits to form a "V". Partially-filled depressions are common throughout the scene, including the circular feature near the top of the image.
In each such case, the filling material is probably the remains of a material that once covered the entire scene".
Location near: 48,4° South; 318,1° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerMareKromium
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Hellas_Planitia.jpgHellas Planitia in Winter (Natural Colors; credits: NASA/MGS/MSSS)121 visite"This picture captures two dust storms, each large enough to cover Arizona or New Mexico. One is located near the lower left, the other at the lower right. Taken on April 8, 2001 (Mid-Southern Winter), this is a mosaic of six MOC daily global images centered around Hellas Planitia in the Martian Southern Hemisphere. Hellas Planitia is the dominant elliptical feature just below the center of the picture. The bright, nearly white surfaces along the lower (southern) edge of the picture are covered by wintertime frost. The strong temperature difference between the winter frost and the warmer air just off the edge of this Polar Cap generates winds that - at this time of year - are often strong enough to lift Dust into large, reddish-brown, billowy clouds".
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Hills-Utopia_Planitia-PCF-LXTT.jpgBouldery Hill in Utopia Planitia (Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)153 visiteCaption NASA originale:"Boulders are one of the possible keys to determining which processes have eroded, transported and deposited material on Mars (i.e.: Landslides, Mudflows, Flood Debris etc.).
During the first year in orbit, MGS-MOC obtained pictures with resolutions between 2 and 30 mt per pixel. It was found that Boulders are difficult to identify on Mars in images with resolutions worse than about 2-3 meters per pixel. Some rather larger Boulders (larger than about 10 mt in size) have already been seen on Mars by the orbiting camera.
This is a feat similar to that which can be obtained by "spy" satellites on Earth. The MOC image 53104 subframe shown here features a low, rounded Hill in South/Eastern Utopia Planitia. Each of the small, lumpy features on the top of this Hill is a Boulder.
In this picture, Boulders are not seen on the surrounding Plain. These Boulders are interpreted to be the remants of a layer of harder rock that once covered the top of the Hill, but was subsequently eroded and broken up by weathering and wind processes".MareKromium
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Hills-Zephyria_Region-PIA07859-00.jpgFlow Features and Hills in Zephyria Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 272 visiteCaption NASA originale:"This MGS-MOC image shows a Plain covered by Flow Material that surrounded and banked against 3 older, rounded Hills in the Zephyria Region. Although some investigators have proposed that the Flows covering Plains in this Region are the remains of an ice-covered lake, others have found considerable evidence, including small Volcanoes, to suggest that the Flows are Volcanic. The textures on these Flows resemble that of some of the Lava Flows in the Tharsis Region of Mars".
Location near: 2,7° South Lat. and 195,7° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Southern WinterMareKromium
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Hills_with_Snow-MGS-PCF-LXTT.jpgWould you like to ski on Mars? (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)189 visiteUna fantastica ripresa effettuata dalla Sonda MGS ci permette di vedere degli abbondanti depositi di neve (o di qualcosa che alla neve assomiglia davvero moltissimo) sui fianchi di alcune colline Marziane. Non c'è nulla di scientifico nel desiderio di dare un'occhiata da vicino a questi pendii innevati: Scienza è anche Curiosità e, come già dicemmo in passato, Bellezza. L'idea di passeggiare (o anche di sciare, perchè no?...) alle pendici di una montagna di Marte che giace, parzialmente ricoperta di neve, in uno spesso ed inviolabile silenzio, la troviamo splendidamente affascinante. Chissà se, un giorno, una simile passeggiata potrà essere davvero possibile e chissà chi sarà il primo Uomo (o la prima Donna) a farla...MareKromium
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