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http://photojournal.jpl.nasa.gov/jp...5726_modest.jpg
PIA05726.tif (791.1 kB) http://photojournal.jpl.nasa.gov/tiff/PIA05726.tif

Citation: This image taken by the Mars Exploration Rover's panoramic camera on sol 91 (April 5, 2004) shows the rover's ultimate destination - the eastern-lying "Columbia Hills." The rover will head toward the hills in coming sols, while stopping to investigate rocks and soils along the way. Of particular interest is the light-toned coating seen here on the low-lying rocks. Scientists intend to find out if this coating is the same as that observed on the well-studied rock dubbed "Mazatzal." They believe Mazatzal's coating may have formed by cementation of airborne dust, perhaps in a slightly wetter, past environment. The scientists also plan to determine if the soil here is the same as the somewhat cohesive soil seen near the rover's lander. Like the coatings, this soil may have formed in past moist environments. This image was taken with the panoramic camera's infrared (750 nanometer) filter.

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http://photojournal.jpl.nasa.gov/jp...5727_modest.jpg
PIA05727.tif (3.124 MB) http://photojournal.jpl.nasa.gov/tiff/PIA05727.tif

Citation: This 360-degree image mosaic was constructed from a sequence of images taken by the navigation camera onboard the Mars Exploration Rover Opportunity. The mosaic was created from 10 images. The images were acquired on the 72nd martian day, or sol, of Opportunity's mission to Meridiani Planum. The camera acquired the images at approximately 16:00 local solar time, or just before midnight Pacific Daylight Time on April 6, 2004. The image was taken from the rover's current position along the edge of the large trough dubbed "Anatolia," located some 150 meters (492 feet) away from "Eagle Crater." Scientists will likely investigate the rocks contained here in coming sols. They are also interested in the area's soil, which -- as evident from the rover's shallow tracks -- appears stronger than that of Eagle Crater. The dark crater behind the trough can be seen from orbit. Anatolia was named after the Anatolian fault system in Turkey.

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http://photojournal.jpl.nasa.gov/jp...5728_modest.jpg
PIA05728.tif (2.744 MB) http://photojournal.jpl.nasa.gov/tiff/PIA05728.tif

Citation: This mosaic image from the Mars Exploration Rover Spirit panoramic camera shows the view acquired after the rover drove 50.2 meters (165 feet) on the martian afternoon of sol 89 (April 3, 2004). The view shows the direction of the rover's future drive destination. In the distance are the eastern-lying "Columbia Hills." This image was assembled from images in the panoramic camera's green (530 nanometer) filter. Anatolia was named after the Anatolian fault system in Turkey.

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Solacin

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Allez, encore !!!!!!!!!!!!

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shakes808080

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c'est incroyable comme toutes ces images se sont banalisées aux yeux des médias : on n'en entend presque plus parler...

Au début c'était : "ouaaaa, c'est quoi ça ??? un caillou ??.. t'as vu la définition ?"

Maintenant, c'est :"ben dis donc, j'aimerais pas y vivre..." ou qqchose dans le style.

Moi, je suis toujours comme un gosse devant ces images...

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Racket logiciel

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Solacin

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Tout a fait d'accord avec toi shakes .......... l'exploit est toujours là, et la beauté de ces images ne se déments absolument pas.
La banalisation ........... c'était à prévoir malheuresement. Mais bon, on a toujours Seth pour nous faire le topo quotidien des nouvelles images, et c'est ça le principal

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http://photojournal.jpl.nasa.gov/jp...5730_modest.jpg
PIA05730.tif (822.2 kB) http://photojournal.jpl.nasa.gov/tiff/PIA05730.tif

Citation: NASA's Mars Exploration Rover Spirit acquired this microscopic imager view of its capture magnet on sol 92 (April 6, 2004). Both Spirit and the Mars Exploration Rover Opportunity are equipped with a number of magnets. The capture magnet, as seen here, has a stronger charge than its sidekick, the filter magnet. The lower-powered filter magnet captures only the most magnetic airborne dust with the strongest charges, while the capture magnet picks up all magnetic airborne dust. The magnets' primary purpose is to collect the martian magnetic dust so that scientists can analyze it with the rovers' Moessbauer spectrometers. While there is plenty of dust on the surface of Mars, it is difficult to confirm where it came from, and when it was last airborne. Because scientists are interested in learning about the properties of the dust in the atmosphere, they devised this dust-collection experiment. The capture magnet is about 4.5 centimeters (1.8 inches) in diameter and is constructed with a central cylinder and three rings, each with alternating orientations of magnetization. Scientists have been monitoring the continual accumulation of dust since the beginning of the mission with panoramic camera and microscopic imager images. They had to wait until enough dust accumulated before they could get a Moessbauer spectrometer analysis. The results of that analysis, performed on sol 92, have not been sent back to Earth yet.

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http://photojournal.jpl.nasa.gov/jp...5731_modest.jpg
PIA05731.tif (2.907 MB) http://photojournal.jpl.nasa.gov/tiff/PIA05731.tif

Citation: This approximate true-color image, acquired by the Mars Exploration Rover Opportunity's panoramic camera, features the hole ground by the rover's rock abrasion tool into "Bounce" rock. The hole measures approximately 35 centimeters (14 inches) long and 10 centimeters (4 inches) high. The depression measures 6.44 millimeters (0.25 inch) deep and about 4.5 centimeters (1.7 inches) across. The grinding procedure took place on the rover's 66th sol on Mars and lasted 2 hours and 15 minutes. A combination of limited solar power, added safety measures and the rock's jagged texture led the rock abrasion tool team to set more aggressive grinding parameters to ensure that the end result was a full circle, suitable for a thorough read from the rover's spectrometers. Bounce's outer ring consists of the cuttings from the rock, pushed out by the brushes on the grinding instrument. The small impressions filled with red dust on the outer ring were caused by the instrument's contact mechanism, which serves to stabilize it while grinding. This image was created using the panoramic camera's blue, green and red filters.

Citation: Message écrit par shakes808080, le 09-04-2004 à 17:05 .... Au début c'était : "ouaaaa, c'est quoi ça ??? un caillou ??.. t'as vu la définition ?" ...

Il etait beau le caillou.... before NASA saw it

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http://photojournal.jpl.nasa.gov/jp...5739_modest.jpg
PIA05739.tif (491.5 kB) http://photojournal.jpl.nasa.gov/tiff/PIA05739.tif

Citation: 10 April 2004 Marte Valles is an outflow channel system that straddles 180°W longitude between the region south of Cerberus and far northwestern Amazonis. The floor of the Marte valleys have enigmatic platy flow features that some argue are formed by lava, others suggest they are remnants of mud flows. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows an island created in the middle of the main Marte Valles channel as fluid---whether lava or mud---flowed past two older meteor impact craters. The craters are located near 21.5°N, 175.3°W. The image covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the lower left.

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http://photojournal.jpl.nasa.gov/jp...5740_modest.jpg
PIA05740.tif (329 kB) http://photojournal.jpl.nasa.gov/tiff/PIA05740.tif

Citation: 11 April 2004 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows evidence of wind deposition of fine sediment in the form of drifts in the lee of obstacles in the martian south polar region. The picture is located near 83.4°S, 8.1°W. The image covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the upper left.

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http://photojournal.jpl.nasa.gov/jp...5742_modest.jpg
PIA05742.tif (1.05 MB) http://photojournal.jpl.nasa.gov/tiff/PIA05742.tif

Citation: 13 April 2004 The martian south polar residual ice cap is composed mainly of frozen carbon dioxide. Each summer, a little bit of this carbon dioxide sublimes away. Pits grow larger, and mesas get smaller, as this process continues from year to year. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a view of a small portion of the south polar cap as it appeared in mid-summer in January 2004. The dark areas may be places where the frozen carbon dioxide contains impurities, such as dust, or places where sublimation of ice has roughened the surface so that it appears darker because of small shadows cast by irregularities in the roughened surface. The image is located near 86.9°S, 7.6°W. The image covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the upper left.

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http://photojournal.jpl.nasa.gov/jp...5748_modest.jpg
PIA05748.tif (579.5 kB) http://photojournal.jpl.nasa.gov/tiff/PIA05748.tif

Citation: 14 April 2004 The north polar cap of Mars is nearly surrounded by fields of dark sand dunes. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows some of the north polar dunes as they appeared in late winter in January 2004. At the time, the dunes were covered with frost. The image is located near 77.8°N, 52.8°W. The image covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the lower left

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http://photojournal.jpl.nasa.gov/jp...5750_modest.jpg

Citation: This illustration shows that the rock dubbed "Bounce" near the Mars Exploration Rover Opportunity's landing region at Meridiani Planum is not made up of the same minerals as surrounding soil. Spectra, or light signatures, from three soil samples taken outside of "Eagle Crater" are compared to that of Bounce (bottom). The dashed white line in the center of the spectra indicates where the "fingerprint" for triple-oxidized iron (Fe 3+) occurs. While the soil samples possess this feature, Bounce does not. The results suggest that Bounce did not originate in the plains of Meridiani Planum. These spectra were taken by the rover's Moessbauer spectrometer. Measurements of Bounce were made on sol 67.

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http://photojournal.jpl.nasa.gov/jp...5751_modest.jpg

Citation: This illustration compares the light signature or spectrum of "Bounce," a rock at Meridiani Planum, to that of a martian meteorite found on Earth called Shergotty. Bounce's spectrum, and thus mineral composition, is unique to the rocks studies so far at Merdiani Planum and Gusev Crater, the landings sites of the Mars Exploration Rovers Opportunity and Spirit. However, the results here indicate that Bounce is not a one-of-a-kind rock, but shares origins with Shergotty. Shergotty landed in India in 1865. Bounce's spectra were taken on sol 67 by Opportunity's Moessbauer spectrometer.

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http://photojournal.jpl.nasa.gov/jp...5752_modest.jpg

Citation: These two sets of bar graphs compare the elemental compositions of six martian rocks: "Bounce," located at Meridiani Planum; EETA79001-B, a martian meteorite found in Antarctica in 1979; a rock found at the Mars Pathfinder landing site; Shergotty, a martian meteorite that landed in India in 1865; "Adirondack," located at Gusev Crater; and "Humphrey," also located at Gusev Crater. The graph on the left compares magnesium/iron ratios in the rocks, and the graph on the right compares aluminum/calcium ratios. The results illustrate the diversity of rocks on Mars and indicate that Bounce probably shares origins with the martian meterorite EETA79001-B. The Bounce data was taken on sol 68 by the alpha particle X-ray spectrometer on Mars Exploration Rover Opportunity.

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