| Piú viste - A Tribute To Mars Global Surveyor |
Thaumasia_Region-The_Electric_Dunes-03.jpgThaumasia Dunes: the brightest dunes of Mars (EDM n.2)91 visiteDa questa immagine, la luminosità di queste "dune" appare davvero in maniera inequivocabile. La prudenza, come sapete, non è mai troppa, ma la nostra sensazione è che stiamo guardando del ghiaccio o del metallo. L'immagine è stata ottenuta da un'altezza di 370 Km e sono le 14:48 MLT (cioè l'ora locale del luogo ripreso). Il Sole, a quell'ora, è decisamente alto sull'orizzonte e quindi la possibilità che l'albedo elevatissima di queste strutture dipenda proprio da un fenomeno di riflessione diretta della luce solare ci sembra, tutto sommato, accettabile.
Ciò che non ci sembra accettabile è l'atteggiamento della NASA riguardo a questo e ad altri fenomeni similari (ed eclatanti): un atteggiamento di TOTALE INDIFFERENZA.
Ma questa, come sapete, è tutta un'altra storia...
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Volcanoes-Arsia_Mons-PIA07298-PCF-LXTT.jpgLayering in Arsia Mons (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 91 visitenessun commentoMareKromium
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Slope_Streaks-MGS-PIA06846.jpgAs Time Goes By... (Original NASA/MGS/MSSS b/w Frame)90 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!...
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Craters-Unnamed_Crater-Southern_Regions.jpgUnnamed Crater covered by Fog (Original NASA/MGS/MSSS b/w Frame)90 visiteCaption NASA originale:"Craters near the edge of the retreating South Polar Seasonal Frost Cap often have fog in them, this time of year. This MGS-MOC wide angle red image was acquired on July 13, 2003. It shows an Unnamed Crater, roughly 36 Km across, that is enveloped in Fog.
This picture was taken as a context frame for a high resolution view that was intended to show Dunes on the Floor of the Crater. That high resolution view was frustrated by thick Fog that hid the Dunes from view. This wide angle context frame shows that winds from the lower right (South/East) were blowing over the Crater, causing the Fog to bunch up in a wavy, rippled pattern. Winds streaming off the South Polar Cap toward the North create a variety of patterns in the Fogs formed by Water Ice or Vapor as the Seasonal Cap retreats during Southern Spring.
This picture shows an area located at about 66,4° South Lat. and 208,6° West Long; sunlight illuminates the scene from the upper left (North/West)".
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Aeolian_Features-Dust_Devil-Daedalia_Planum-M0803122Det~0.jpgDust Devil in Daedalia Planum (EDM - Original NASA/MGS/MSSS b/w Frame)90 visitenessun commento
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North_Polar_Regions-Frozen_Dunes-MGS-01.jpgPolar Dunes and Ice (False Colors; credits: NASA)90 visitenessun commento
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Volcanoes-The_FootPrint_Volcano-A-MGS-PCF-LXTT-IPF.jpgThe "Footprint" Volcano (Absolute Natural Colors; credits for the additional process. and color.: Drr Don P. Mitchell and Paolo C. Fienga - Lunexit Team)89 visiteThis NASA - Mars Global Surveyor (MGS) - Mars Orbiter Camera (MOC) High Resolution image, acquired on the date of July, 13, 2003, shows a small, Dust-covered and so far - officially - Unnamed Volcano (note: the nickname "Footprint" has been given to this Surface Feature by the Researchers of the Italian Planetary Foundation) that is located on the Volcanic Plains to the East of the Giant Martian Volcano, Pavonis Mons.
It is interesting to notice that the Floor of the Caldera - such as the elliptical depression visible at the Summit of the Volcano - has a few windblown Ripples on it. The Ripples and the extremely thick Dust Mantle, together with a number of small Impact Craters located on its Surface, are signs which indicate that the "Footprint" Volcano erupted a VERY long time ago, and that there has been no more activity in (geologically speaking) recent times. In addition to the above, we also wish to underline that, while the Surface surrounding the Footprint Volcano has kept, despite the eons of volcanic idleness, a dark gray color (such as the typical colors of Lava, once is cooled off, and Volcanic Ashes), the Land that is farther away from the Volcano has maintained (or maybe re-gained?) the typical brown-orange color which characterizes most of the Equatorial and Peri-Equatorial Surface of Mars. This image covers an area approx. 3 by 6,8 Km wide (such as approx. 1,9 by 4,2 miles). The Footprint Volcano is located near 1,6° South Lat. and 105,7° West Long.; the Sunlight illuminates the scene from the South.
The frame has been colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Mars Global Surveyor Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.MareKromium
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Craters-Unnamed_Crater-MGS-PIA06877.jpgUnnamed Crater in Lycus Sulci (Original NASA/MGS/MSSS b/w Frame)88 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.
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Craters-Unnamed_Crater-AB107707-00-PCF-LXTT.jpgUnnamed Crater with wide Dunefield (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)88 visitenessun commentoMareKromium
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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)88 visitenessun commentoMareKromium
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Craters-Galle_Crater-Happy_Face_Crater-2003_05_15_M2300366.jpgGalle Crater (Natural Colors; credits: NASA/MGS/MSSS)87 visiteCaption NASA originale:"The 2 pictures shown here are taken from the same daily global image mosaic (the only difference is that each was processed slightly differently). The pictures show Galle Crater, informally known as "Happy Face," as it appeared in early Southern Winter. The white-ish gray surfaces are coated with wintertime carbon dioxide frost. The pattern of frost distribution gives the appearance that "Happy Face" has opened its mouth. Galle Crater is located on the east rim of Argyre Planitia at 51°S, 31°W. Sunlight illuminates the scene from the upper left. Galle Crater is about 230 Km (143 mi) across".
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North_Polar_Features-Dunes-Dark_Dunes-MGS.jpgDark Dunes in Vastitas Borealis (Original NASA/JPL/MSSS b/w Frame)87 visiteCaption NASA originale:"This MGS-MOC image shows dark North Polar Dunes overlying other materials in the North Polar Region".
Location near: 79,1° North Lat. and 228,8° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Summer
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