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PSP_009161_1450_RED-01.jpgLong Shadows over Ariadnes Colles (edm - natural colors; credits: Lunexit)58 visiteThis edm shows one of the hills in detail.
The hill appears criss-crossed by long fractures and most of them made apparent by the shadows they cast.
The shadows indicate that the fractures “stick out” from their surroundings, and hence that they are more resistant to erosion. In terrestrial environments this occurs when fluids flow along the fractures, leaving behind cementing minerals or when fractures are filled by igneous materials.MareKromium
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PSP_009192_1890_RED-00.jpgRelatively Recent Slope Streak started from a Dust Devil (ctx frame - natural colors; credits: Lunexit)58 visiteThis Slope Streak occurred in the time between a Viking image of the bottom of this crater (713A57, which saw no streak) and a MOC image (R12/01917, as reported by Schorghofer et al. (2007).
That paper suggested that the Slope Streak may have been caused by a Dust Devil that had passed by (its track is visible in the MOC image). Our HiRISE image shows that there isn’t a small hill or anything at this Slope Streak’s apex, but that the dust devil track really does intersect with the apex. It is likely that the Dust Devil may have caused this Slope Streak.
Dark Slope Streaks are visible in many places on the Martian surface, often where the dust cover is thick.
One explanation for Dark Slope Streaks is that they are little avalanches in the dust. The apexes of Slope Streaks (such as the point where they start from) are often at little hills or ridges on a larger slope, with the thinking that the dust here is already close to being too steep, and then any little perturbation will start one of these tiny avalanches.
Small craters have also been seen at slope streak apexes.MareKromium
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OPP-SOL1634-1N273249874EFF90NVP1937R0M1.jpgOut of Victoria! - Sol 1634 (tri-chromatic version; credits: Lunexit)58 visitenessun commentoMareKromium
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SOL1422-1.jpgGusev's Landscape - Sol 1422 (natural colors; credits: Dr G. Barca)58 visitenessun commentoMareKromium
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PHOE-SOL097-ICEUNDER-MF.jpgUnder the Lander - Sol 97 (True Colors; credits: Dr M. Faccin)58 visitenessun commentoMareKromium
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Channels-Clanis_Vallis-MO.JPGClanis Vallis (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)58 visitenessun commentoMareKromium
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Tethys-PIA10462.jpgTethys, in full light (natural colors; credits: Lunexit)58 visiteCaption NASA:"Five hours after acquiring PIA10460, the Cassini Spacecraft turned its cameras back to Tethys for a more southerly view. The southern reaches of Ithaca Chasma are seen here, along with the large crater Telemus, just right of center.
Lit terrain seen here is on the Saturn-Facing Side of Tethys (approx. 1062 Km, or 660 miles across).
This view looks toward the Southern Hemisphere from a perspective 43° South of the moon's Equator. North is toward the top and rotated 30° to the right.
The image was taken in visible green light with the Cassini Spacecraft narrow-angle camera on July 28, 2008. The view was obtained at a distance of approx. 313.000 Km (such as about 194.000 miles) from Tethys and at a Sun-Tethys-Spacecraft, or Phase, Angle of 42°.
Image scale is roughly 2 Km (a little more than 1 mile) per pixel".MareKromium
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PSP_008825_2040_red.jpgCharacterize Surface Hazards and Science of Possible MSL Rover Landing - Mawrth Vallis (natural colors; credits: Lunexit)58 visitenessun commentoMareKromium
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Psp_008719_1815_red.jpgCharacterize Surface Hazards and Science of MSL Rover Landing Site - Equatorial Regions/Meridiani Planum (natural colors; credits: Lunexit)58 visitenessun commentoMareKromium
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SOL1508-2.jpgGusev's Skylines - Sol 1508 (natural colors; credits: Dr G. Barca)58 visitenessun commentoMareKromium
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PHOE-SOL101-GIF-MF.gifCold Sunshine - Sol 101 (GIF-Movie - false colors; credits: Dr M. Faccin)58 visitenessun commentoMareKromium
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OPP-SOL1640-MF.jpgVictoria's Berries - Sol 1640 (True Colors; credits: Dr M. Faccin)58 visitenessun commentoMareKromium
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