| Risultati della ricerca nelle immagini - "Newton" |
Craters-Newton_Crater-03.jpgNewton Crater's Gullies (Original NASA/MGS/MSSS b/w Frame)167 visiteDa "NASA - Picture of the Day" del 26.6.2000:"...Inside a small crater that lies inside large Newton Crater on Mars, numerous narrow channels run from the top down to the crater floor. The above picture covers a region spanning about 3000 meters across. These and other gullies have been found on Mars in recent HR pictures taken by the orbiting Mars Global Surveyor robot spacecraft. Similar channels on Earth are formed by flowing water, but on Mars the temperature is normally too cold and the atmosphere too thin to sustain liquid water. Nevertheless, many scientists now hypothesize that liquid water did burst out here from underground Mars, eroded the gullies and pooled at the bottom as it froze and evaporated. If so, life-sustaining ice and water might exist even today below the Martian surface (...)". L'idea che ci sia acqua allo stato liquido sotto la superficie di Marte non รจ nuova, anzi: la NASA stessa lo ipotizzava 4 anni fa. Oggi, dopo mesi di esplorazione "in loco", tutto tace. Forse un ripensamento?
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Craters-Newton_Crater-PCF-LXTT-04.jpgNewton Crater's Gullies (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)252 visitenessun commentoMareKromium
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ESP_023045_1380-PCF-LXTT-00.jpgFlow Features inside Newton Crater (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)158 visitenessun commentoMareKromium
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PSP_002620_1410_RED_browse-00.jpgGullies on the edge of Newton Basin (context image)53 visiteThis image shows a portion of two impact craters on the floor of Newton Basin where a smaller crater formed within a earlier larger one.
The larger crater's North rim can be seen diagonally (South-West/North-East) across the image and the smaller crater's north rim is near the right-side of the image.
Along the interior wall of the larger crater, several gullies have incised into the wall of the Crater. MareKromium
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PSP_002620_1410_RED_browse-01.jpgGullies on the edge of Newton Basin (extra-detail mgnf)53 visiteThe gullies start near the top of the wall and can be traced across a break in slope partway down the wall (see here, 750 mt across). This break in slope occurs along the entire portion of the Crater wall in this image. The gullies appear shallower just above the break in slope, and deeper below the slope break.
This suggests that the fluid which eroded and carved out the wall materials forming the gullies, increased in velocity after the slope break, creating a deeper section of the gully.MareKromium
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