| Piú votate - A Tribute To Mars Global Surveyor |
Thaumasia_Region-The_Electric_Dunes-06.jpgThe "Bright Dunes" of Thaumasia (EDM n.1 - Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)56 visitenessun commento
(6 voti)
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Craters-Unnamed_Crater_with_Intra-crater_Dunes-M0700566-01.jpgIntra-Crater Dunes (EDM)60 visitenessun commento
(6 voti)
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Troughs-Tharsis_Region-PIA04103-002.jpgWhat's inside the Trough? (EDM n.2 - Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commento
(6 voti)
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Phobos_from_Mgs-009.jpgPhobos, from MGS (Original NASA/MGS/MSSS Full Frame n. 3)54 visiteLett. E: il secondo (più piccolo, ma certo non meno inesplicabile) Monolito di Phobos.
Nota: nella parte superiore del frame sono visibili anche altri rilievi colonnari - riconoscibili a causa delle ombre assolutamente peculiari che proiettano in condizioni di illuminazione radente - ancora più piccoli.
Le "Colonne di Phobos" e le "Cuspidi di Blair": potrebbe esistere una connessione? Questi rilievi possono essere il frutto di processi geologici simili?
Che ne pensate?MareKromium
(6 voti)
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North_Polar_Features-North_Polar_Cap-MGS.jpgAnnular Clouds over the North Pole (Natural Colors; credits: NASA/JPL/MSSS)55 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".
(6 voti)
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Dunes-Ogygis_Region-MGS.jpgThe Dunes of Ogygis (Original NASA/MGS/MSSS b/w Frame)54 visiteCaption NASA originale:"This MGS-MOC image shows dark Sand Dunes, with a thin coating of Autumn Frost, in the Ogygis Regio, West of the Argyre Basin. The steepest Slopes on the Dunes (such as their "Slip Faces"), point toward the North-North/East (lower left), indicating that the Dominant Winds in the Region blow from the South-South/West (upper right)".
Location near: 50,4° South Lat. and 66,6° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Autumn
(6 voti)
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Volcanic_Features-Pits-A.jpgUnusually-looking Collapse Pits (Original NASA/MGS/MSSS b/w CTX Frame)54 visiteLocation near: 22,1° North Lat. and 53,2° East Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern Spring
Resolution: 18 mt/pixel
(6 voti)
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Craters-Unnamed_Crater_with_Pedestal-MGS.jpgUNnamed "Pedestal Crater"57 visiteCaption NASA originale:"This MGS-MOC image shows a "pancake" or "pedestal" crater on the Martian Northern Plains. The rocky ejecta from the crater protected the underlying material from being stripped away by wind, leaving the ejecta standing higher than the surrounding terrain. The rocks in the ejecta are not too clearly seen today, especially at the 6 mt (~20 feet) per pixel scale of this image, in part because they have been covered up by later, mantling material".
Location near: 60,0° North; 265,6° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
(6 voti)
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North_Polar_Features-Dunes-MGS-05.jpgNorth Polar Dunes (Original NASA/MGS/MSSS b/w Frame)58 visiteCaption NASA originale:"This MGS-MOC image shows dunes in the North Polar Region of Mars. In this scene, the dunes and the plain on which the dunes reside, are at least in part covered by a bright CO2 frost. Dark spots indicate areas where the frost has begun to change, either by subliming away to expose dark sand, changing to a coarser particle size, or both. The winds responsible for the formation of these dunes blew from the South-West toward the North-East.
Location near: 76,3° North; 261,2° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
(6 voti)
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North_Polar_Features-Dunes-MGS-00.jpgNorth Polar Dunes (Original NASA/MGS/MSSS b/w Frame)56 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 Spring
(6 voti)
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Craters-Unnamed_Craters-MGS.JPGMartian "Spectacles"! (Original NASA/MGS/MSSS b/w Frame)55 visiteCaption NASA originale:"This MGS-MOC image shows a pair of partially-buried impact craters which are being exhumed on a plain east of Hellas in the Promethei Terra Region Mars".
Location near: 45,5° South; 256,5° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Autumn
Nota: "spectacles"---> occhiali
(6 voti)
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Volcanic_Regions-Rocky_Outcrops-MGS-00.JPGStreamlined Rocky Outcrops near Olympus Mons (Original NASA/MGS/MSSS b/w Frame)57 visiteCaption NASA originale:"This MGS-MOC image shows wind-eroded Outcrops overlying Lava Flow Surfaces located to the West of Olympus Mons. Outcrops with this appearance are also called Yardangs. Yardangs typically form in Sedimentary Rock or Volcanic Ash that contains some amount of Sand. The weathering of the Rock due to the Aeolian action cause the release of sand-sized particles from the Outcrops and, in time, such a form of erosion slowly shape the rock into the classic, inverted boat hull-like shapes of Yardangs".
Location near: 13,2° North Lat. and 160,1° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
(6 voti)
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