Altre foto da Curiosity e un articolo su alcune rocce da osservare.
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La Luna della Terra in questa foto non si vede perchĂŠ:
- troppo piccola
- fuoro campo
- in linea di vista con Terra
Dovâè la Luna?
Un umano lâavrebbe vista. Per la Mastcam lâesposizione era troppo breve.
Dallâarticolo:
Lemmon says. âEarth would have been the âfirst starâ seen in the diminishing twilight and as bright as the brightest stars we see here [on Earth]. Iâm sure a person viewing that scene would have also seen our Moon, just below and to the left of Earth, although it wasnât bright enough with the short exposures and the sky background.â
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A fine settembre NASA ha pubblicato nuove immagini di una delle ruote di Curiosity.
The image shows the MAHLI view of the right-middle (RM) wheel, which is still holding up well despite taking some of the worst abuse from Mars.
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MSL continua a fare scienza eh
Trovate le piĂš grandi molecole organiche in una roccia polverizzata da Curiosity.
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Nuovo articolo di Simone Montrasio pubblicato su AstronautiNEWS.it.
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Secondo un paper appena pubblicato, le tracce di metano scoperte in passato da Curiosity potrebbero provenire da una perdita dello spettrometro che le ha rilevate.
Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover
We find that the TLS [Tunable Laser Spectrometer] foreoptics chamber typically contained methane abundances that were 3â4 orders of magnitude greater than those reported in the sample cell, alongside unexpected and rapidly varying pressure changes inside the instrument.
Using information from unreported experiments where methane diffusion into the cell was observed, we estimate a gas transport coefficient and develop a model to simulate gas exchanges between the two compartments in typical experiments, investigating the implications for methane measurements. We find that tiny leaks (<0.1% of foreoptics methane) would suffice to explain the reported atmospheric methane measurementsâleaks that are otherwise undetectable from housekeeping data. [âŚ]
Furthermore, the TLS protocol for analyzing the collected spectraâaveraging different methane levels deduced from individual triplet spectral lines separately rather than retrieving methane from the triplet as a wholeâexhibits inconsistencies that might have underestimated uncertainties.
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