| Piú votate - A Tribute To Mars Global Surveyor |
Channels-Unnamed_Channel_in_Stygis_Catena-PIA07133-00.jpgAncient Riverbed in Stygis Catena (Original NASA/MGS/MSSS b/w Frame)82 visiteCaption NASA originale:"This MGS-MOC image shows a Trough (trough---> canale) in the Stygis Catena Region, East of the Martian Volcano Elysium Mons. The Trough probably formed by collapse (collapse--->geol. "cedimento" del terreno). Large, dark Boulders can be seen on the Trough Floor in this Volcanic Region. The image is located near 24,4 North Lat. and 210,4 West Long. The image covers an area about 3 km (approx. 1,9 mi) wide and sunlight illuminates the scene from the lower left".
(4 voti)
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Z-00-20130618_s2300831.pngEnd of Transmissions (the Final Image from MGS-MOC - CTX Frame)97 visiteThe Mars Orbiter Camera's blue wide-angle instrument on Mars Global Surveyor took image S23/00831 as part of MOC's routine observations of Mars for weather monitoring purposes. It was garbled upon reception on Earth because Mars Global Surveyor was close to solar conjunction at the time. Little did MOC's operators know that this would be their instrument's last image ever sent from Mars. NASA / JPL / MSSS
As garbled as it looks, there is a tiny bit of "sense" in the image, a small area of cratered terrain near the top. Ken Edgett says this is in southern Terra Sirenum near the Copernicus basin.MareKromium
(3 voti)
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Z-01-20130618_S23_00831sub.gifEnd of Transmissions (EDM)125 visiteMars Global Surveyor was the first successful U.S. Mission launched to Mars since the Viking Missions in 1976. After a 20-year absence at the planet, Mars Global Surveyor ushered in a new era of Mars exploration with its five science investigations. Mars Global Surveyor arrived at Mars on September 11, 1997 (September 12, UTC), and has contributed a multitude of findings, including signs of past, persistent water such as an ancient delta and currently active water features in the gullies of canyon walls. After nearly a decade of discovery, MGS went silent in November, 2006.MareKromium
(3 voti)
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Chaotic_Terrain-Aram_Chaos-R2200155-03.jpgThe "Many Faces" of Aram Chaos (4 - EDM n. 3 - Enhanced and Darkened Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)97 visitenessun commentoMareKromium
(3 voti)
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South_Polar_Region-PIA08649-1.jpgFeatures of the South Polar Regions (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)247 visitenessun commentoMareKromium
(3 voti)
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Elysium_Planitia-M1103342.jpgFeatures of Elysium Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)223 visitenessun commentoMareKromium
(3 voti)
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North_Polar_Features-The_Erg-PIA07375.jpgDark Dunes and Frost in the North Polar Erg (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)162 visiteCaption NASA originale:"This MGS-MOC image shows sand dunes in the North Polar Region of Mars, as they appeared during Northern Summer in December 2004".
Location near: 78.1 North Lat. and 227,2 West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Northern Summer
MareKromium
(3 voti)
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Volcanoes-Olympus-Viking-MGS.gifAs Time Goes By... (a GIF-Movie by Dr Paolo C. Fienga - Lunexit Team)237 visitenessun commentoMareKromium
(3 voti)
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Dunes-S2200554sub-01.jpgMigrating Dunes (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team))179 visiteCaption NASA originale:"This MGS-MOC image shows a suite of dunes in one of the several North Polar Dune Fields. The bright surfaces adjacent to some of the dunes are patches of frost. These dunes spend much of the Autumn, Winter, and Spring seasons covered with CO2 frost. Only in late Spring and in Summer are the dark windblown sands fully exposed.
Over the course of the 9+ years of the MGS mission, the MOC team has sought evidence that sand dunes may be migrating downwind over time. However, no clear examples of the movement of a whole dune have been identified. On Earth, such movement is typically detectable in air photos of the smallest active dunes over periods of a few years. Owing to the fact that the North Polar Dunes spend much of each Martian Year under a cover of frost, perhaps these move much more slowly than their frost-free, terrestrial counterparts. The sand may also be somewhat cemented by ice or minerals, likewise preventing vigorous dune migration in the present environment.
This view covers an area approximately 3 km (1.9 mi) wide and is illuminated by sunlight from the lower left. The dunes are located near 79.8N, 127.1W, and the picture was acquired on 11 September 2006.MareKromium
(3 voti)
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Volcanic_Features-Pits-Ascraeus_Mons-PIA07313-02.jpgAscraeus Mons' Pit Chain (EDM/HD - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)199 visitenessun commentoMareKromium
(3 voti)
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Volcanic_Features-Pits-Ascraeus_Mons-PIA07313-04.jpgAscraeus Mons' Pit Chain (EDM/HD - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)201 visitenessun commentoMareKromium
(3 voti)
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Craters-Unnamed_Defrosting_Crater-PIA03921-01.jpgUnnamed Defrosting Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)250 visiteCaption NASA originale:"This MGS-MOC image shows a Surface in the South Polar Region, covered by CO2 Frost. In this springtime scene, the Frost has begun to sublime so that Sandy Surfaces exhibit an abundance of Dark Spots. The circular depression is probably the remains of an Impact Crater. In summer, the Spotted Surfaces in this image would be darker than their surroundings, because they are patches of Windblown Sand".
Location near: 67,6 South Lat. and 254,3 West Long.
Image width: ~3 Km (~1,9) mi
Illumination from: upper left
Season: Southern SpringMareKromium
(3 voti)
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