Walking on Mars with Spirit and Opportunity
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SOL585-3-PIA04184.jpgPanorama from the Summit (3) - Sol 58554 visiteIn this time of year when Mars is most likely to be covered by global dust storms, NASA's Spirit Rover has been experiencing relative calm.
In fact, the martian winds have been quite beneficial, clearing dust from the Rover's solar panels and increasing the solar energy available for driving to new places and conducting scientific experiments.
Another thing the martian wind has done is send hundreds of Dust Devils spinning across the surface of the Planet.
From Spirit's high perch approximately 90 mt (about 295 feet) above the surrounding plains, as shown in many images taken from the Summit of Husband Hill, many DD's have been clearly visible in the plains of Gusev Crater.
Planetary Scientist Ron Greeley of Arizona State University, describes the whirling vortices of wind and dust as "vacuum cleaners" that were first seen in images from the Viking Orbiter in 1985, though their existence was predicted as early as 1964.
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SOL585-4-PIA04184.jpgPanorama from the Summit (4) - Sol 58554 visiteGreeley has calculated that if the number and frequency of DD Spirit has encountered are similarly spaced throughout Gusev Crater, the Crater probably experiences about 90.000 Dust Devils per Sol.
Collectively, the whirlwinds lift and redeposit an estimated 4,5 MKg (about 9,9 M-U.S.-pounds) of sediment per Sol.
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SOL585-5-PIA04184.jpgPanorama from the Summit (5) - Sol 58559 visitenessun commento
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SOL585-6-PIA04184.jpgPanorama from the Summit (6) - Sol 58554 visitenessun commento
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SOL585-7-PIA04184.jpgPanorama from the Summit (7) - Sol 58554 visitenessun commento
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SOL585-8-PIA04184.jpgPanorama from the Summit (8) - Sol 58554 visitenessun commento
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SOL586-1.jpgMarble-like Rocks in the Sand - Sol 586 (True Colors + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)55 visitenessun commentoMareKromium
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SOL586-2.jpgReddish Dust on the "NASA" Logo - Sol 586 (True Colors - credits: Dr G. Barca)54 visitenessun commentoMareKromium
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SOL586-2P178380791EFFAE03P2551L2M1.jpgSometimes...Close views are like watching from orbit! (1) - Sol 58654 visiteUna serie di scatti, decisamente ravvicinati, relativi a diverse rocce che si trovano situate nelle immediate vicinanze di Spirit.
Su questi frames Vi suggeriamo di svolgere almeno un paio di riflessioni:
1) ribadiamo: con i cambi di filtro/colore, sembra di guardare oggetti diversi (confrontate le prime due immagini ad esempio);
2) avete mai notato che frames come questi, se vengono guardati molto attentamente, assomigliano incredibilmente ad alcune "vedute orbitali" della Sonda MGS?...
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SOL586-2P178380924EFFAE03P2551L7M1.jpgSometimes...Close views are like watching from the orbit! (2) - Sol 58654 visitenessun commento
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SOL586-2P178384462EFFAE03P2273L5M1.jpgSometimes...Close views are like watching from the orbit! (3) - Sol 58655 visitenessun commento
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SOL586-2P178384552EFFAE03P2273L2M1.jpgSometimes...Close views are like watching from the orbit! (4) - Sol 58654 visitenessun commento
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