Walking on Mars with Spirit and Opportunity
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OPP-SOL952-PIA08809-2.jpgCape Verde (2)155 visitenessun commento
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OPP-SOL952-PIA08810.jpgCape Verde66 visiteCaption NASA originale:"This view of Victoria Crater is looking North from Duck Bay towards the dramatic promontory called Cape Verde. The dramatic cliff of layered rocks is about 50 mt (about 165 feet) away from the Rover and is about 6 mt (about 20 feet) tall. The taller promontory beyond that is about 100 mt (about 325 feet) away, and the vista beyond that extends away for more than 400 mt (about 1300 feet) into the distance. This is a false color rendering (enhanced to bring out details from within the shadowed regions of the scene) of images taken by the PanCam on NASA's Mars Exploration Rover Opportunity during the Rover's 952nd Sol (such as Sept. 28, 2006) using the camera's 750-nanometer, 530-nanometer and 430-nanometer filters".
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OPP-SOL952-PIA10007-3.jpgWelcome to Victoria Crater! (possible natural colors; elab. Lunexit - inset: elab. NASA)54 visiteCaption NASA:"This image taken by the Panoramic Camera (PanCam) on the Mars Exploration Rover (MER) Opportunity shows the view of Victoria Crater from Duck Bay. Opportunity reached Victoria Crater on Sol 951 (September 27, 2006) after traversing 9,28 Km (5,77 miles) since her Landing Site at Eagle Crater.
Victoria Crater is roughly 800 mt (about 0,5 mile) wide -- about 5 times wider than Endurance Crater, and 40 times as wide as Eagle Crater. The south face of the 6 mt (20 foot) tall layered Cape Verde promontory can be seen in the left side of the inner crater wall, about 50 mt (approx. 165 feet) away from the Rover at the time of the imaging. The north face of the 15 mt (50 foot) tall stack of layered rocks called Cabo Frio can be seen on the right side of the Inner Crater Wall.
This mosaic was taken on Soles 952 and 953 (September 28 and 29, 2006).
There are 30 separate pointings through 6 different filters at each pointing.
This mosaic was generated from Pancam's 753, 535 and 482 nnmts filters".MareKromium
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OPP-SOL952-site_B76_275_navcam_CYL_L-B953R1-1.jpgVictoria Crater, from Duck Bay (1)53 visiteCaption NASA originale:"NASA's Mars Rover Opportunity edged 3,7 meters (12 feet) closer to the top of the Duck Bay alcove along the rim of Victoria Crater during the Rover's 952nd Martian day, or Sol (overnight Sept. 27 to Sept. 28), and gained this vista of the Crater. (...)
The far side of the crater is about 800 mt (one-half mile) away.
The rim of the crater is composed of alternating promontories, rocky points towering approximately 70 mt (about 230 feet) above the crater floor, and recessed alcoves, such as Duck Bay. The bottom of the crater is covered by sand that has been shaped into ripples by the Martian wind.
The rocky cliffs in the foreground have been informally named Cape Verde, on the left, and Cabo Frio, on the right".
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OPP-SOL952-site_B76_275_navcam_CYL_L-B953R1-2.jpgVictoria Crater, from Duck Bay (2)53 visitenessun commento
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OPP-SOL952-site_B76_275_navcam_CYL_L-B953R1-3.jpgVictoria Crater, from Duck Bay (3)53 visitenessun commento
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OPP-SOL953-1N212785100EFF76EVP0773R0M1.jpgThe way behind "Duck Bay" (1) - Sol 95353 visitenessun commento
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OPP-SOL953-1N212785152EFF76EVP0773L0M1.jpgThe way behind "Duck Bay" (2) - Sol 95353 visitenessun commento
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OPP-SOL953-Victoria1c_opportunity-00.jpgThe "colors of Victoria", according to "Aviation Week" (1)76 visite...In un "Mondo di Idee", un "Mondo di Interpretazioni": questa ci viene proposta dalla Rivista "Aviation Week", ripresa da "NASA - Picture of the Day" del giorno 2 Ottobre 2006.
Bene: chissà se la NASA, un giorno, non prenderà ispirazione anche dai "Colori di Marte" proposti da Lunar Explorer Italia... In fondo, siamo nel campo - ed ormai lo avrete capito benissimo - del "TOTALMENTE OPINABILE" e quindi...Una opinione vale l'altra!
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OPP-SOL953-Victoria1c_opportunity-01.jpgThe "colors of Victoria", according to "Aviation Week" (2)80 visitenessun commento
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OPP-SOL953-Victoria1c_opportunity-02.jpgThe "colors of Victoria", according to "Aviation Week" (3)64 visitenessun commento
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OPP-SOL956-PIA09170-1.gifClouds over Meridiani - Sol 956 (GIF-Movie)53 visiteNASA's MER Opportunity captured a view of wispy afternoon clouds, not unlike fair weather clouds on Earth, passing overhead on the Rover's 956th Sol (such as Oct. 2, 2006). With Opportunity facing North-East, the clouds appear to drift gently toward the West in this movie taken with the Rover's NavCam.
The 10 frames, taken 32" apart, show the formation and evolution of what are likely mid-level, convective water clouds. Such clouds are common near Mars' Equator at this time of the Martian year. They have been observed by both of NASA's MER, by satellites orbiting Mars and by the HST. In this case, the clouds appear to develop at a fixed location, in the center of the frame about 25° above the horizon. This style of origin suggests that a thermal plume is rising over a surface feature. In spite of apparent winds aloft, the thermal plume appears to remain stationary for the whole duration of the movie.
Though scientists have determined from the images that the wind bearing is East/North-East, approximately 80°, it is not possible on the basis of the movie to unambiguously determine the height and speed of the clouds. Scientists estimate, based on models of atmospheric wind profiles and the apparent displacement of the clouds, that all of the clouds in the movie are at about the same height somewhere between 5 and 25 Km (about 3 to 20 miles) above the surface. The clouds are estimated to be moving at 2,5 mt per second, if they are low, to 12,5 mt per second, if they are high (8 to 41 feet per second).
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