| Piú votate - A Tribute To Mars Global Surveyor |
Craters-Unnamed_Crater_with_Windstreak_in_Sirtis_Major_Planum-PCF-LXTT.jpgCrater and Windstreak in Syrtis Major Planum (Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga)76 visitenessun commentoMareKromium
(4 voti)
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Craters-Unnamed_Crater-PIA07508-PCF-LXTT.jpgImpact Crater and Windstreak (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)56 visiteCaption NASA:"This MGS-MOC image shows a 1,2-Km-diameter North mid-latitude crater with a bright wind streak".
Location near: 30,8° North Lat. and 131,8° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Summer MareKromium
(4 voti)
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Craters-Schiaparelli_Crater-Layers-02.gifLayers in Schiaparelli Crater (Natural Colors; credits: Lunexit)55 visiteDa "NASA - Picture of the Day", del giorno 29 Novembre 2009:"Is this a picture of Mars or Earth?
Oddly enough, it is a picture of Mars. What may appear to some as a terrestrial coastline is in fact a formation of ancient layered hills and wind-blown sand on Mars.
The above-pictured region spans about 3 Km in Schiaparelli Crater. What created the layers of sediment is still a topic of research. Viable hypotheses include ancient epochs of deposit either from running water or wind-blown sand. Winds and sandstorms have smoothed and eroded the structures more recently.
The "water" that appears near the bottom is actually dark colored sand. The image was taken with the Mars Global Surveyor Spacecraft that operated around Mars from 1996-2006 and returned over 200.000 images".MareKromium
(4 voti)
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![South_Polar_Regions-South_Pole-MGS-mg90s000[1]-PCF-LXTT-1.jpg](albums/userpics/10060/small_South_Polar_Regions-South_Pole-MGS-mg90s000%5B1%5D-PCF-LXTT-1.jpg "Nome del file=South_Polar_Regions-South_Pole-MGS-mg90s000[1]-PCF-LXTT-1.jpg
Dimensione del file=48KiB
Dimensioni=1062x1000
Aggiunta il=Ago 09, 2009")
South_Polar_Regions-South_Pole-MGS-mg90s000[1]-PCF-LXTT-1.jpgMartian South Pole and South Polar Regions, from MGS (Darkened Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commentoMareKromium
(4 voti)
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South_Polar_Storm-PIA11982.jpgSouth Polar Dust Storm54 visiteCaption NASA:"This nearly global mosaic of observations made by the Mars Color Imager on NASA's Mars Reconnaissance Orbiter on April 2, 2009, shows billowing clouds of dust being lifted into the Atmosphere by a storm near the edge of the Seasonal Polar Cap of Southern Mars.
The season on Southern Mars is late Spring. Late Southern Spring and early Southern Summer are a peak time of the Martian year for major Dust Storms.
Atmospheric haze due to suspended dust from recent storm activity is evident elsewhere on the Planet, including the Skies over Mars rovers Opportunity (MER-B) and Spirit (MER-A).
Black areas in the mosaic are the result of data drops or high angle roll maneuvers by the Orbiter that limit the camera's view of the Planet.
Equally-spaced blurry areas that run from South-to-North (bottom-to-top) result from the high off-nadir viewing geometry, a product of the spacecraft's low-orbit.
Malin Space Science Systems, San Diego, provided and operates the Mars Color Imager. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, is the prime contractor for the project and built the Spacecraft".MareKromium
(4 voti)
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Channels-Auqakuh_Vallis-MGS-PCF-LXTT.jpgAuqakuh Vallis: "Old Riverbed" or "Windblown Ripples"? (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)56 visiteCaption NASA originale:"This MGS-MOC image shows windblown ripples on the floor of Auqakuh Vallis.
The light-toned area, running diagonally across the scene from South-West to North-East, may be dust that has accumulated in the bottom of the valley and on top of the ripples".
Location near: 31,3° North; 299,3° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMareKromium
(4 voti)
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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
(4 voti)
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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
(4 voti)
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South_Polar_Features-Fog_over_Chasma_Australe-PCF-LXTT.jpgFog over Chasma Australe (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)56 visiteCaption NASA originale:"Fog is a common occurrence in some areas of the retreating South Polar Seasonal Frost Cap. Fogs are commonly banked-up against steep Slopes or found inside Defrosting Craters.
This MGS-MOC image captured mid-afternoon Fog banked against the Layered Walls of Chasma Australe, a Trough in the South Polar Region of Mars. The Frost-covered Layers of Chasma Australe can be seen on the right side of this image, while the billowy Fog is to the left.
Sunlight illuminates this scene from the upper left. The Fog, probably composed of water ice crystals, casts shadows on the Chasm's Wall.
This picture is located near 83,5° South Lat. and 257,9° West Long; it covers an area about 3 Km (1.9 mi) wide". MareKromium
(4 voti)
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00-A-Mars_Global_Surveyor.jpgMars Global Surveyor62 visiteMars Global Surveyor was launched in 1996 on a mission designed to study Mars from orbit for two years. It accomplished many important discoveries during nine years in orbit. On Nov. 2, 2006, the spacecraft transmitted information that one of its arrays (---> pannelli) was not pivoting (--> ruotando) as commanded.
Loss of signal from the MGS Orbiter began on the following orbit.
Mars Global Surveyor has operated longer at Mars than any other spacecraft in history and for more than four times as long as the prime mission originally planned.
NASA has recently formed an internal review board to look more in-depth into why NASA's Mars Global Surveyor went silent in November 2006 and recommend any processes or procedures that could increase safety for other spacecraft.
(4 voti)
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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.
(4 voti)
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Phobos_from_Mgs-007.jpgPhobos, from MGS (Original NASA/MGS/MSSS Full Frame n. 1)53 visiteLett. A: grappolo di boulders a forma "colonnare" (si direbbe un gruppo di tre boulders allineati secondo un ordine dimensionale coerente ed un ulteriore rilievo, anch'esso di apparenza colonnare, posto nelle immediate vicinanze del primo gruppo).
Lett. B: rilievo anomalo, decisamente alto (a giudicare dall'ombra che proietta), posto sul versante interno di un cratere di modeste diomensioni, a circa mezza altezza della murata.
Lett. C: gruppo di rilievi anomali (si direbbe 3 o 4) - concettualmente molto simili al grappolo di boulders evidenziato sub lett. A - posti sul ciglio di un cratere di medie dimensioni.MareKromium
(4 voti)
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