| Piú votate - Mars through Mars Express (ESA - Original Raw Frames & Orbital Panoramas) |
NepenthesMensae-385-090408-5212-6-co1-01.jpgNepenthes Mensae (MULTISPECTRUM; credits: Lunexit)96 visiteThe High Resolution Stereo Camera on board ESA’s Mars Express Orbiter imaged Nepenthes Mensae, a river delta on Mars, on 22 January 2008.
The data was acquired in the Region lying at approx. 3° North and 121° East, with a ground resolution of 15 mt/pixel.
The southern part of the image shows a structure reminiscent of a river delta on Earth, whose material was eroded from a valley, about 30 Km long and upto 1000 mt deep. This formed a fan-shaped deposit at the mouth of the valley. The rim of the deposit stands roughly 300 mt above the floor of the depression.
The resemblance of the structure to river deltas on Earth suggests that it was formed by a similar mechanism. Scientists believe that sediment transported by water was deposited as the flow of the water slowed down where the channel widened and met the mouth of the river.
The pictures show that the Region was affected by two episodes of flooding.
The first left a cone-shaped deposit, reaching far out into the lowland.
The second episode formed the fan with the distinct margin. This margin could indicate the location where sediments flowed into a standing body of water or ice.
Numerous hills and flat-topped mountains visible in the central part of the depression are remnants of the material that was present in the area.
The material was then eroded forming the depression, leaving behind the elevations visible today.MareKromium
(3 voti)
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NP-S-h0241_0009_nd3-00.jpgFrame Mars Express RAW n. h0241_0009_nd356 visiteMareKromium
(3 voti)
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B-h0032_0000_bl3-00.jpgFrame Mars Express RAW n. h0032_0000_bl354 visite
(3 voti)
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Juventae_Chasma_3D-2.gifJuventae Chasma (High-Def-3D - EDM n.1; credits: ESA)53 visitenessun commento
(3 voti)
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Ismenius_Lacus-H1201_0000_ND2_H-PCF-LXTT.jpgFrame H1201_0000_ND2: Ismenius Lacus Region209 visiteCaption ESA:"The scene shows the Region of Ismenius Lacus, about 77 Km wide in the North and 63 Km wide in the South, about 845 Km in length, and centered at - approx. - 25° East Long and 40° North Lat.
The image represents a Transitional Region on the Surface separating the heavily Cratered Highlands in the South from the smooth Northern Plains.
The Dissected Terrain contains a series of Mesas (i.e.: isolated "High Plateaux") and Buttes (i.e.: small and flat-topped Hills).MareKromium
(2 voti)
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Unusually_looking_Surface_Feature-Pit-h1323_0000_nd3.jpgExtremely unusually-looking Surface Feature (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)104 visitenessun commentoMareKromium
(2 voti)
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Valles_Marineris-h0471_0001_nd3.jpgPortion of the Valles Marineris Canyon System (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga)68 visitenessun commentoMareKromium
(2 voti)
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Aeolian_Features-Windstreaks-h0165_0068_nd3-PCF-LXTT.jpgWindstreaks (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)69 visitenessun commentoMareKromium
(2 voti)
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Aeolian_Features-Windstreak-h0232_0000_nd3-01-PCF-LXTT.jpgWindstreaks (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)64 visitenessun commentoMareKromium
(2 voti)
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Lava_Flows-Daedalia_Planum-PCF-LXTT.jpgDaedalia Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)77 visitenessun commentoMareKromium
(2 voti)
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South_Polar_Regions-h1245_0000_nd3~0.jpgThe beautiful Southern Regions of Mars (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)63 visitenessun commentoMareKromium
(2 voti)
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Kasei_Valles_and_Sacra_Fossae-448-20091007-6241-6-co-01_H1.jpgKasei Valles and Sacrae Fossae (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)56 visiteCaption ESA:"Mars Express flew over the boundary between Kasei Valles and Sacra Fossae and imaged the Region, acquiring spectacular views of the Chaotic Terrain in the area.
The image is centred at about 12° North Latitude and 285° East Longitude and have a ground resolution of approx. 21 mt/pixel.
They cover about 225 x 95 Km (or 21.375 sq Km); an area roughly half the size of the Netherlands".MareKromium
(2 voti)
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