| Piú viste - A Tribute To Mars Global Surveyor |
Aeolian_Features-Yardangs-Terra_Sabaea-MGS-01.jpgYardangs in Terra Sabaea (2 - Original NASA/MGS/MSSS b/w Frame)58 visiteLocation near: 1,4° North Lat. and 333,9° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Northern Spring
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Noachis_Terra-M1501427-PCF-LXTT-00.jpgNoachis Panorama (CTX Frame - Enhanced and Darkened Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)58 visitenessun commento
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Aeolian_Features-Windstreaks-V20036001.jpgWindstreaks, Pseudo-Windstreaks and Surface Striations (3 - False Colors)58 visitenessun commentoMareKromium
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North_Polar_Features-Dunes-PCF-LXTT.jpgThe Frozen Dunes of the North in early Spring (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)58 visiteCaption NASA originale:"This MGS-MOC image shows a group of sand dunes, covered by seasonal Carbon Dioxide frost, in the Martian North Polar Region. Over the course of Northern Hemisphere Spring, the CO2 frost sublimes away, slowly revealing the dark sand that makes up the dunes. The dark spots in this image may be patches of freshly-exposed sand, or they could be places where the CO2 frost has changed, either becoming rougher, coarser-grained (larger crystals), or both. A rougher or coarser-grained surface will appear darker because of an increase in shadowing of the surface by the small-scale roughness elements".
Location near: 75,2° North Lat.and 51,3° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMareKromium
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North_Polar_Features-Dunes-MGS-09.jpgNorth Polar Dunes (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)58 visiteCaption NASA:"What causes the black dots on dunes on Mars? As spring dawned on the Northern Hemisphere of Mars in 2004, dunes of sand near the Poles begin to defrost. Thinner regions of ice typically thaw first revealing sand whose darkness soaks in sunlight and accelerates the thaw.
The process might involve sandy jets exploding through the thinning ice. By Summer, the spots expanded to encompass the entire dunes that were then completely thawed and dark. The carbon dioxide and water ice actually sublime in the thin atmosphere directly to gas. Taken in mid-July, the above image shows a field of spotted polar dunes spanning about 3 Km near the Martian North Pole.
Today, the future of Mars Rovers Spirit and Opportunity remains unknown windy dust storms continue to starve them of needed sunlight".MareKromium
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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)58 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
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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)58 visitenessun commentoMareKromium
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North_Polar_Features-Dunes-MGS-11.jpgDefrosting North Polar Dunes (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)58 visitenessun commentoMareKromium
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Chaotic_Terrain-Aram_Chaos-S0100839-PCF-LXTT-00.jpgUnusual Surface Features in Aram Chaos (CTX Frame - False Colors)58 visiteIl "punto interrogativo" indica - come da commento/segnalazione di un nostro Amico Lettore (il Sig. Pietro Camin) - un dettaglio superficiale apparentemente anomalo la cui forma ricorda, sebbene vagamente, quella di un triangolo isoscele che giace coricato su un fianco (in accordo, come ovvio, al punto di vista dell'Osservatore).
Si tratta, forse, di una "Struttura Artificiale"?
Ebbene la risposta ad un simile interrogativo e sulla base di un frame orbitale ottenuto da oltre 300 Km di altitudine (lo sapete bene) è impossibile (e, questo ci teniamo a sottolinearlo, solo chi tira brutalmente ad indovinare - o specula sulla credulità popolare - potrebbe rispondere manifestando certezze a tal riguardo).
Tuttavia, dato che il Sig. Camin ha legittimamente manifestato un dubbio il quale, a ben guardare, si "posiziona" (anche fisicamente) su una Regione (quella di Aram Chaos) che è in sè ricca di Rilievi Superficiali "curiosi", abbiamo deciso di fare un piccolo sforzo investigativo e quindi proporre e proporVi, in totale umiltà e senza pretesa alcuna di fornire "certezze", NON UNO, MA ALTRI TRE possibili Rilievi Superficiali Anomali presenti nei pressi del rilivo segnalato dal Sig. Pietro Camin (che ringraziamo per lo spunto).
Ed ora osservate il detail-mgnf che segue...MareKromium
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South_Polar_Features-Swiss_Cheese.gifGlobal Warming on Mars (GIF-Movie; credits: Mars Unearthed)58 visitenessun commentoMareKromium
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Craters-Unnamed_Crater.gifThawing (GIF-Movie; credits for the additional process.: Mars Unearthed)58 visitenessun commentoMareKromium
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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)58 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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