| Piú votate - A Tribute To Mars Global Surveyor |
Channels-Unnamed_Channel_in_Stygis_Catena-PIA07133-00.jpgAncient Riverbed in Stygis Catena (Original NASA/MGS/MSSS b/w Frame)61 visiteCaption NASA originale:"This MGS-MOC image shows a Trough (trough---> canale) in the Stygis Catena Region, East of the Martian Volcano Elysium Mons. The Trough probably formed by collapse (collapse--->geol. "cedimento" del terreno). Large, dark Boulders can be seen on the Trough Floor in this Volcanic Region. The image is located near 24,4° North Lat. and 210,4° West Long. The image covers an area about 3 km (approx. 1,9 mi) wide and sunlight illuminates the scene from the lower left".
(3 voti)
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Craters-Tikhonravov_Crater-PIA07196.jpgThe "Eyes" and "Eyebrows" of Tikhonravov Crater (Original NASA/MGS/MSSS b/w Frame)75 visiteCaption NASA originale:"This red wide angle MGS-MOC image shows Tikhonravov Crater in Central Arabia Terra. The Crater is about 386 Km (approx. 240 miles) in diameter and presents two Unnamed Impact Craters at its center that have dark patches of Sand in them, giving the impression of pupils in two eyes. Each of these two Unnamed Craters lies a dark-toned patch of Surface Material, providing the impression of eyebrows.
M. K. Tikhonravov was a leading Russian rocket engineer in the 20th Century. The crater named for him, despite its large size, is still partly buried, on its West Side, beneath the heavily Cratered Terrain of Arabia Terra. The center of Tikhonravov is near 13,5° North Lat. and 324,2° West Long. Sunlight illuminates the scene from the upper left".
(3 voti)
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Craters-Unnamed_Crater-MGS-PIA06877.jpgUnnamed Crater in Lycus Sulci (Original NASA/MGS/MSSS b/w Frame)86 visiteUn Cratere da impatto Senza Nome giace nell'area immediatamente ad Ovest di Lycus Sulci ed a Nord-Ovest del Monte Olympus. Spettacolare il livello di dettaglio raggiunto nella ripresa delle pareti del Cratere che, nella sua interezza, copre un'area di circa 3 Km quadrati.
(3 voti)
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Slope_Streaks-MGS-PIA06846.jpgAs Time Goes By... (Original NASA/MGS/MSSS b/w Frame)89 visiteUn'interessantissimo frame che ci mostra "come passa il tempo" (e come cambiano le cose...) su Marte. La stessa zona (Memnonia region - 5,9° South Lat. and 162,2° West Long.) a distanza di quasi 5 anni. Noi vediamo delle differenze palesi del paesaggio ed altre, per così dire, un pò "più sottili", che richiedono una certa attenzione per essere individuate (ma che sono individuabili!). Provateci anche Voi a trovarle!...
(3 voti)
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Chaotic_Terrain-Aram_Chaos-R2200155-03.jpgThe "Many Faces" of Aram Chaos (4 - EDM n. 3 - Enhanced and Darkened Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)87 visitenessun commentoMareKromium
(2 voti)
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South_Polar_Region-PIA08649-1.jpgFeatures of the South Polar Regions (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)229 visitenessun commentoMareKromium
(2 voti)
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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)213 visitenessun commentoMareKromium
(2 voti)
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Channels-Bahram_Vallis-Landslide-M1000913-01.jpgLandslide in Bahram Vallis (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)159 visiteMareKromium
(2 voti)
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Aeolian_Features-Windstreaks-Becquerel_Crater-M0702802-01.jpgWindstreaks inside Becquerel Crater (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)192 visitenessun commentoMareKromium
(2 voti)
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Craters-Unnamed_Crater_in_Terra_Sabaea-02.jpgUnnamed Crater in Terra Sabaea (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)203 visiteCaption originale:"This MGS-MOC image shows a 1,5 mt (~5 feet) per pixel view of an Impact Crater that is approximately 3 Km (about 9840 ft) in diameter. It is located in South-Western Terra Sabaea".
Location near: 21,9° South Lat. and 338,6° West Long.
Image width: ~3 km (~1,9 mi)
Illumination from: upper left
Season: Southern Summer MareKromium
(2 voti)
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Dunes-S2200554sub-01.jpgMigrating Dunes (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team))171 visiteCaption NASA originale:"This MGS-MOC image shows a suite of dunes in one of the several North Polar Dune Fields. The bright surfaces adjacent to some of the dunes are patches of frost. These dunes spend much of the Autumn, Winter, and Spring seasons covered with CO2 frost. Only in late Spring and in Summer are the dark windblown sands fully exposed.
Over the course of the 9+ years of the MGS mission, the MOC team has sought evidence that sand dunes may be migrating downwind over time. However, no clear examples of the movement of a whole dune have been identified. On Earth, such movement is typically detectable in air photos of the smallest active dunes over periods of a few years. Owing to the fact that the North Polar Dunes spend much of each Martian Year under a cover of frost, perhaps these move much more slowly than their frost-free, terrestrial counterparts. The sand may also be somewhat cemented by ice or minerals, likewise preventing vigorous dune migration in the present environment.
This view covers an area approximately 3 km (1.9 mi) wide and is illuminated by sunlight from the lower left. The dunes are located near 79.8°N, 127.1°W, and the picture was acquired on 11 September 2006.MareKromium
(2 voti)
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Craters-Lyell_Crater-01.jpgLyell Crater's Gullies (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)189 visiteCaption originale:"This MGS-MOC image shows a suite of Gullies on a Scarp in Lyell Crater".
Location near: 69,7° South Lat. and 14,0° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerMareKromium
(2 voti)
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