| Piú viste - Mars in JPEG2000 |
ESP_018273_2245_RED_abrowse-04-MF-LXTT.jpgExposed Ice in Fresh Crater (Natural Colors; credits for the additional process. and color.: Dr Marco Faccin - Lunexit Team)78 visitenessun commentoMareKromium
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PSP_006755_2030_RED_abrowse-5.jpgUnusual Surface Features in Mawrth Vallis: the "Black Box" (EDM - credits for the additional process.: Dr Gianluigi Barca - Lunexit Team)77 visitenessun commentoMareKromium
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Collapse_Pit_in_Tractus_Fossae_(ESP_011386_2065)-2.jpgCollapse Pit in Tractus Fossae (stretched version)77 visitenessun commentoMareKromium
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PSP_006755_2030_RED_abrowse-1.jpgUnusual Surface Features in Mawrth Vallis Channel: the "Tepe" (EDM - credits for the additional process.: Dr Gianluigi Barca - Lunexit Team)76 visitenessun commentoMareKromium
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PSP_002047_1890-3.jpgUnbelievable Surface Features... (credits: Dr G. Barca)76 visitenessun commentoMareKromium
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A_Pair_of_Small_Pit_Craters_(PSP_009488_1745)-2.jpgCollapse Pit76 visitePit Craters exist in volcanic regions across Mars, and form when surface materials collapse into large underground cavities. Such Pits are generally bowl-shaped, filled with sediment, and are relatively shallow when compared with their diameters.
Recently, a small number of anomalous pit craters were identified with strikingly different visible and thermal characteristics such as: sheer cliff walls; deep interiors that can extend out-of-sight beneath the Surface and temperature fluctuations that behave unlike any known feature on Mars.MareKromium
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Collapse_Pit_in_Tractus_Fossae_(ESP_011386_2065)-1.jpgCollapse Pit in Tractus Fossae76 visiteThis HiRISE image shows a Collapse Pit in Tractus Fossae, a Region of large ridges and troughs created by tectonic activity.
The "Fossae" occur on the Tharsis Volcanic Rise, a giant Region of enhanced volcanic activity that includes the three large volcanoes Ascraeus Mons, Pavonis Mons and Arsia Mons.
The Pit in this image has very steep walls, and so only a narrow arc is illuminated by Sunlight. The rest of the Pit is in dark shadow. However, a stretched version of the image shows details of the pit floor, due to a small amount of scattered Sunlight.
Pits like this form by collapse into underground voids, such as those left by propagating magma-filled dikes. They may sometimes have overhanging walls, although in this case the walls can be seen and appear nearly vertical. Some similar features are found on Earth: Devils Throat, in Hawaii, is one example. Other similar examples have been imaged on Mars as well.MareKromium
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ESP_014342_0930-07.jpgSouth Polar Residual Cap Intraseasonal Change Monitoring (EDM n.7 - Natural Colors; credits: Lunexit)76 visitenessun commentoMareKromium
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PSP_001497_2480-7.jpgLake "Ginny" (EDM n.2 - Natural - but enhanced - Colors; credits for the add. process. and color.: Drr Gianluigi Barca & Paolo C. Fienga)76 visitenessun commentoMareKromium
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MartianHole-0002.jpgThe "Martian Black Hole" (extra detail mgnf)75 visitePer i commenti su questo frame, Vi invitiamo a leggere l'articolo pubblicato su TruePlanets dal titolo:The “Martian Black Hole”, ovvero: una ricostruzione alternativa circa la possibile natura di un rilievo marziano inquietante…
(riesame critico del frame Mars Reconnaissance Orbiter PSP_003647_1745) - del Dr Paolo C. Fienga e di Lunar Explorer Italia.
MareKromium
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Chain_of_Pits_on_Arsia_Mons_(PSP_005414_1735)-1.jpgCollapse Pit on Arsia Mons75 visitenessun commentoMareKromium
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Chain_of_Pits_on_Arsia_Mons_(PSP_005414_1735)-2.jpgCollapse Pit on Arsia Mons (Natural Colors; credits: Lunar Explorer Italia)75 visitenessun commentoMareKromium
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