| Piú votate - A Tribute To Mars Global Surveyor |
South_Polar_Features-Thawing_Time.gifThawing (GIF-Movie; credits for the additional process.: Mars Unearthed)116 visitenessun commentoMareKromium
(9 voti)
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Craters-Unnamed_Crater.gifThawing (GIF-Movie; credits for the additional process.: Mars Unearthed)106 visitenessun commentoMareKromium
(9 voti)
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Craters-Unnamed_Crater_with_Gullies-MGS-1-PCF-LXTT.jpgUnnamed Crater with Gullies (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)65 visiteCaption NASA originale:"This MGS-MOC image shows Gullies and cracked and stressed Gully-Apron Deposits in a South Mid-Latitude Unnamed Crater. Gullies can also be seen in the deep shadow on the North Wall of the Crater. These Gullies might have formed by the erosive action of liquid water, sometime in the not-too-distant Martian Past".
Location near: 36,7 South; 206,2 West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Autumn
Nota: attenzione a quello che la NASA ha scritto in sede di commento: adesso il passato al quale fare riferimento per pensare ad acqua che scorre "allo stato liquido" su Marte non pi remoto (un miliardo di anni o gi di l); adesso questo passato "...not too distant..." e cio "passato prossimo". RicordateVi, in futuro, di quello che stiamo scrivendo da mesi: un frame dopo l'altro ed una parola dopo l'altra, la NASA si sta (lentamente ma) costantemente ridefinendo in chiave possibilista molte delle proprie posizioni (da anni pi che consolidate) su molti aspetti/enigmi del Pianeta Rosso.
A quando l'ammissione di una "forma vitale" attuale, magari sotterranea?!?... MareKromium
(9 voti)
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Aeolian_Features-DD_and_Dust_Storms-2003_06_02-01.jpgDust Storms and Dust Devils between Syria Planum and Claritas Fossae (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)67 visitenessun commentoMareKromium
(9 voti)
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North_Polar_Features-Dunes-MGS-04.jpgNorth Polar Dunes (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)64 visitenessun commentoMareKromium
(9 voti)
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North_Polar_Features-Dunes-MGS-08.jpgNorth Polar Dunes (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)66 visiteCaption NASA originale:"This MGS-MOC image shows dunes in the Martian North Polar Region. The dunes are composed of dark,
coarse (--> ruvido, di tessitura grossolana) sand.
The white areas around the dunes are the last remaining areas of seasonal CO2 frost cover.
The solid CO2 accumulates during the Autumn and Winter and sublimes (goes from solid to gas) away in the Spring.
This image was taken near the end of the Northern Spring".
Location near: 78,0° North; 244,5° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMareKromium
(9 voti)
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North_Polar_Features-Dunes-MGS-01.jpgNorth Polar Dunes (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)64 visiteCaption NASA originale:"This MGS-MOC image shows dunes in the North Polar Region of Mars. In this Springtime view, the dunes are largely covered by frozen Carbon Dioxide (CO2) that was deposited during the Winter months in the Northern Hemisphere. Dark spots indicate areas where the frost has begun to either sublime away, acquire a roughened texture, or both".
Location near: 77,3 North; 95,4 West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMareKromium
(9 voti)
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South_Polar_Features-01.jpgSouth Polar "River-like" Surface Features? (RAW Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)76 visitenessun commentoMareKromium
(9 voti)
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Craters-Unnamed_Crater_with_Pedestal-MGS.jpgAnother "Pedestal Crater" (Enhanced Natural Colors; credits for the additioanl process. and color.: Dr Paolo C. Fienga - Lunexit Team)72 visitenessun commentoMareKromium
(9 voti)
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Craters-Unnamed_Crater-S16-01-140-03.jpgFresh Crater near Ulysses Patera (Natural Colors; credits: NASA/MGS/MSSS)69 visiteCaption NASA originale:"Ths frame has been colorized using a look-up table derived from the Colors of Mars as seen by the Mars Reconnaissance Orbiters High Resolution Imaging Science Experiment (HiRISE) camera".MareKromium
(9 voti)
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North_Polar_Features-North_Polar_Cap-MGS.jpgAnnular Clouds over the North Pole (Natural Colors; credits: NASA/JPL/MSSS)64 visiteCaption NASA:"Two annular (---> somewhat circular) clouds are seen in the upper left corner of this mosaic of MOC wide angle camera daily global mapping images. To the right of the picture's center is the Martian North Polar Cap. The image has a scale of about 7,5 Km (about 4,7 miles) per pixel. Annular clouds are common in mid-Northern Summer in the North Polar Region and may result from eddy currents in the lower atmosphere. The appearance of such clouds happens every year; this year they came like clockwork within a two-week forecasted period, based on the previous 4 Martian Years of experience gained from MGS MOC daily global imaging.
Despite their superficial resemblance to Earth-orbiting satellite views of hurricanes, these cloud features are not the result of strong winds and they typically dissipate later in the day. The pictures used to make this mosaic were acquired less than 2 days before the MOC was turned off for MGS's 5th Mars-Earth Solar Conjunction period. During Conjunction, Mars was on the other side of the Sun, relative to Earth, and thus MGS could not transmit data (through the Sun) during the second half of October".
(9 voti)
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Craters-Unnamed_Crater_with_Gullies-MGS-0.jpgUnnamed Crater with Gullies (Original NASA/MGS/MSSS b/w Frame)66 visiteCaption NASA originale:"This MGS-MOC image shows gullies and cracked and stressed gully apron deposits in a South mid-Latitude crater. Gullies can also be seen in the deep shadow on the North wall of the crater. These gullies might have formed by the erosive action of liquid water, sometime in the not-too-distant martian past".
Location near: 36,7 South; 206,2 West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Autumn
Nota: attenzione a quello che la NASA ha scritto in sede di commento: adesso il passato al quale fare riferimento per pensare ad acqua che scorre "allo stato liquido" su Marte non pi remoto (un miliardo di anni o gi di l); adesso questo passato "...not too distant..." e cio "passato prossimo". RicordateVi, in futuro, di quello che stiamo scrivendo da mesi: un frame dopo l'altro ed una parola dopo l'altra, la NASA si sta (lentamente ma) costantemente ridefinendo in chiave possibilista molte delle proprie posizioni (da anni pi che consolidate) su molti aspetti/enigmi del Pianeta Rosso.
A quando l'ammissione di una "forma vitale" attuale, magari sotterranea?!?...
(9 voti)
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