Walking on Mars with Spirit and Opportunity
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SOL788-PIA08039-1.jpgSaltland, in natural colors (1) - Sol 78857 visiteCaption NASA originale:"While driving Eastward toward the North-Western flank of McCool Hill, the wheels of NASA's MER Spirit churned up the largest amount of bright soil discovered so far in the Mission. This image from Spirit's PanCam, taken on Sol 788 (such as March 22, 2006), shows the strikingly bright tone and large extent of the materials uncovered.
Several days earlier, Spirit's wheels unearthed a small patch of light-toned material informally named Tyrone. In images from Spirit's PanCam, Tyrone strongly resembled both Arad and Paso Robles, two patches of light-toned soils discovered earlier in the Mission.
Spirit found Paso Robles in 2005 while climbing Cumberland Ridge on the Western slope of Husband Hill. In early January 2006, Spirit discovered Arad on the basin floor just South of Husband Hill. Spirit's instruments confirmed that those soils had a salty chemistry dominated by iron-bearing sulphates".
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SOL788-PIA08039-2.jpgSaltland, in natural colors (2) - Sol 78854 visiteCaption NASA originale:"Spirit's PanCam and Miniature Thermal Emission Spectrometer examined this most recent discovery, and researchers will compare its properties with the properties of those other deposits.
These discoveries indicate that salty, light-toned soil deposits might be widely distributed on the flanks and valley floors of the Columbia Hills Region in Gusev Crater.
The salts, which are easily mobilized and concentrated in liquid solution, may record the past presence of water. So far, these enigmatic materials have generated more questions than answers, however, and as Spirit continues to drive across this Region in search of a safe Winter haven, the team continues to formulate and test hypotheses to explain the Rover's most fascinating recent discovery.
This view is an approximately true-color rendering that combines separate images taken through the PanCam's 753-, 535- and 432-nanometer filters".
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SOL788-PIA08039-3.jpgSaltland, in natural colors (3) - Sol 78854 visiteUn grande plauso alla caption originale NASA la quale, sebbene lunga ed articolata, è riuscita a non dirci assolutamente nulla di nuovo, nè di utile, nè di interessante, nè di significativo in relazione a queste interessanti e, per tanti versi, enigmatiche peculiarità presenti nella zona situata alle pendici e nei dintorni delle Columbia Hills.
Un ottimo lavoro, davvero.
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SOL790-GB.jpgBright Salts and Sulphates in Spirit's Rover Tracks - Sol 790 (possible True Colors; credits: Dr G. Barca)55 visitenessun commentoMareKromium
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SOL792-2F196675846EFFAQBWP1201R0M1.jpgTracks, salts and sulphates (1) - Sol 79253 visitenessun commento
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SOL792-2F196679715EFFAQCYP1209R0M1.jpgTracks, salts and sulphates (2) - Sol 79254 visitenessun commento
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SOL792-2N196680347EFFAQCYP1910R0M1.jpgTracks, salts and sulphates (3) - Sol 79280 visitenessun commento
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SOL792-2N196680545EFFAQCYP1911R0M1.jpgTracks, salts and sulphates (4) - Sol 79258 visitenessun commento
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SOL792-MF-3D.jpgRover Tracks in Gusev Crater - Sol 792 (3D; credits: Dr G. M. Faccin)54 visitenessun commentoMareKromium
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SOL796-2F197029426EFFAQEMP1211L0M1.jpgSalty tracks (1) - Sol 79692 visitenessun commento
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SOL796-2N197029834EFFAQEMP1911L0M1.jpgSalty tracks (2) - Sol 79654 visitenessun commento
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SOL796-2P197030604EFFAQEMP2398R1M1.jpgMartian balance... - Sol 79674 visitenessun commento
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