| Ultimi arrivi - Mars Reconnaissance Orbiter (MRO) |
ESP_021568_1925_RED_abrowse-PCF-LXTT.jpgYardangs in Eumenides Dorsum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)477 visitenessun commentoMareKromiumApr 26, 2011
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ESP_021551_1710_RED_abrowse-PCF-LXTT.jpgElorza Crater (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)226 visitenessun commentoMareKromiumApr 24, 2011
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South_Pole-PIA13985.jpgCross-Section of buried Carbon-Dioxide (CO2) Ice on Mars272 visiteCaption NASA:"This cross-section view of underground layers near Mars' South Pole is a radargram based on data from the Shallow Subsurface Radar (SHARAD) instrument on NASA's Mars Reconnaissance Orbiter. Researchers interpret the zone that is nearly free of radio-wave reflections (hence dark in the radargram) to be composed of frozen Carbon Dioxide, or "dry ice."
The newly found deposit of dry ice contains enough CO2 to dramatically increase the total amount of Atmosphere on Mars when it will vaporize, as climate models suggest it does at times when the Planet's Tilt increases. Mars' current Atmosphere is about 95% Carbon Dioxide, and this deposit contains up to about 80% as much Carbon Dioxide as the Atmosphere does.
This cross-section covers a transect about 330 Km (approx. 205 miles) long in a Region from about 86° to 87° South Latitude and 280° to 10° East Longitude. The vertical dimension of the graphic is time delay of the radar echoes. The depth of the tallest portion of the cross-section corresponds to about 20 microseconds difference in time delay, which can be converted to roughly 1,7 Km (a little more than 1 mile).
(SHARAD was provided by the Italian Space Agency. Its operations are led by Sapienza University of Rome, and its data are analyzed by a joint U.S.-Italian science team. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for the NASA Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the Spacecraft)MareKromiumApr 23, 2011
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ESP_016036_1370_RED_abrowse-02-PCF-LXTT.jpgDunes in Noachis Terra (EDM n.2 - Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)237 visitenessun commentoMareKromiumApr 22, 2011
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ESP_021862_1175_RED_abrowse.jpgSouthern Boulderfield (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)218 visitenessun commentoMareKromiumApr 22, 2011
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PSP_003239_1870_RED_browse-01-PCF-LXTT.jpgSlope Streaks on Collapse Pits (EDM - Absolute Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)371 visitenessun commentoMareKromiumApr 20, 2011
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PSP_003239_1870_RED_browse-00-PCF-LXTT.jpgSlope Streaks on Collapse Pits (CTX Frame - Absolute Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)362 visitenessun commentoMareKromiumApr 20, 2011
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PSP_003249_1510_RED_abrowse-00.jpgMineral Diversity inside Ritchey Crater (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)303 visitenessun commentoMareKromiumApr 20, 2011
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PSP_003249_1510_RED_abrowse-01.jpgMineral Diversity inside Ritchey Crater (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)303 visitenessun commentoMareKromiumApr 20, 2011
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Psp_001700_2505_red-00~0.jpgLauth Crater and the Frozen "Pseudo-Lake" of Vastitas Borealis (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)310 visiteThe right side of PSP_001700_2505 shows a portion of a Frost Patch on a Mound inside a Northern Hemisphere Crater (unofficially known as "Lauth Crater").
The Frost Patch has remained largely stable at least since the Viking era (late 1970s). The bright Frost Region is bounded by a Dunefield on the North-East. Several sizes of Dunes are visible. The size classes probably represent generations of Dunes that formed under a variety of dominant wind conditions. MareKromiumApr 19, 2011
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Psp_001700_2505_red-01.jpgLauth Crater and the Frozen "Pseudo-Lake" of Vastitas Borealis (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)295 visiteThis EDM shows the Dunes and Frost boundary up-close. The Frost is largely absent over the Dunes and is more stable over the Ground that does not have Dune-shaped Landforms.MareKromiumApr 19, 2011
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ESP_021705_1510_RED_abrowse-00-PCF-LXTT-0.jpgHydrated Minerals (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)435 visitenessun commentoMareKromiumApr 18, 2011
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