Mars Reconnaissance Orbiter (MRO)
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PSP_009992_1615_RED.jpgAl-Qahira Vallis (possible True Colors; credits: Lunar Explorer Italia)54 visiteMars Local Time: 15:36 (middle afternoon)
Coord. (centered): 18,2° South Lat. and 162,9° East Long.
Spacecraft altitude: 260,7 Km (such as about 162,9 miles)
Original image scale range: 52,2 cm/pixel (with 1 x 1 binning) so objects ~1,56 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,2°
Phase Angle: 65,6°
Solar Incidence Angle: 65° (meaning that the Sun is about 25° above the Local Horizon)
Solar Longitude: 126,4° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010006_1475_RED.jpgWestern Half of Central Peak of a large and well-preserved Unnamed Southern Crater (possible True Colors; credits: Lunar Explorer Italia)55 visiteMars Local Time: 15:33 (middle afternoon)
Coord. (centered): 32,0° South Lat. and 140,7° East Long.
Spacecraft altitude: 270,8 Km (such as about 169,3 miles)
Original image scale range: 54,2 cm/pixel (with 1 x 1 binning) so objects ~1,63 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 20,7°
Phase Angle: 88,3°
Solar Incidence Angle: 73° (meaning that the Sun is about 17° above the Local Horizon)
Solar Longitude: 126,9° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010008_1555_RED.jpgCentral Uplift of Unnamed Crater in Terra Tyrrhena (possible True Colors; credits: Lunar Explorer Italia)57 visiteMars Local Time: 15:41 (middle afternoon)
Coord. (centered): 24,4° South Lat. and 87,5° East Long.
Spacecraft altitude: 259,4 Km (such as about 162,1 miles)
Original image scale range: 25,9 cm/pixel (with 1 x 1 binning) so objects ~1,04 mt across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 7,8°
Phase Angle: 64,1°
Solar Incidence Angle: 70° (meaning that the Sun is about 20° above the Local Horizon)
Solar Longitude: 127,0° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010008_2630_RED.jpgStructure of the North Polar Layered Deposits (natural colors; credits: Lunexit)56 visiteThis image shows an exposure of the North Polar Layered Deposits (NPLD) within the Northern Residual Ice Cap. The NPLD are thought to have been formed by recent climate changes on Mars, like ice ages on Earth.
Scientists are studying the NPLD to learn more about these climate changes on Mars. In many places, the NPLD layers appear to extend over large areas, suggesting that they were deposited from atmospheric suspension. If the layers in this image are horizontal and continuous, the apparent curves are caused by erosion of valleys into the NPLD. To determine whether this is the case, HiRISE has acquired two images of this location to form a stereo pair. Analysis of this stereo pair will allow the orientation and thickness of the layers to be measured across the region of stereo coverage, constraining hypotheses for their formation.
Also visible in this image are bright and dark streaks that may be caused by the redistribution of frost by winds.MareKromium
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PSP_010012_2225_RED_abrowse-00.jpgDeep Rocks Unveiled at Bonestell Crater (ctx frame; natural colors; credits: Lunexit)54 visiteImpact craters are sometimes nicknamed “Mother Nature's drill holes” because, thanks to them, deep rock formations are exposed at the surface. Bonestell Crater is a good example.
This image depicts part of the floor of this relatively young impact crater located in the Northern Lowlands. The Northern Lowlands occupy most of the northern half of Mars. They are younger than the Southern Highlands, as shown by the lower number of impact craters, and well below the Planet’s Average Elevation. Their origin is still a mystery.
Bonestell is about 42 Km (approx. 26 miles) in diameter and about 1250 meters (4100 feet) deep. The rocky hills on the floor of this crater constitute its “Central Peak”.
Central peaks form due to elastic rebound of subsurface materials immediately after impact. The rocks in Bonestell's Central Peak may have been 4-to-8 Km below the surface before impact.MareKromium
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PSP_010012_2225_RED_abrowse-01.jpgDeep Rocks Unveiled at Bonestell Crater (edm; natural colors; credits: Lunexit)53 visiteThis edm (437x500 mt or 479x547 yards) of the HiRISE image shows a portion of Bonestell's Central Peak. HiRISE reveals details in the structure and color of these deep rocks that will help scientists decipher the origin and history of the Northern Lowlands.MareKromium
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PSP_010013_1725_RED.jpgGreat Exposure of Ganges Chasma Wall and Slump Deposit (possible True Colors; credits: Lunar Explorer Italia)53 visiteMars Local Time: 15:34 (middle afternoon)
Coord. (centered): 7,2° South Lat. and 308,2° East Long.
Spacecraft altitude: 264,3 Km (such as about 165,2 miles)
Original image scale range: 52,9 cm/pixel (with 1 x 1 binning) so objects ~1,59 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,7°
Phase Angle: 60,0°
Solar Incidence Angle: 59° (meaning that the Sun is about 31° above the Local Horizon)
Solar Longitude: 127,2° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010017_1460_RED.jpgRelatively Flat Crater Floor bounded By sharp change in Slope (possible True Colors; credits: Lunar Explorer Italia)53 visiteMars Local Time: 15:42 (middle afternoon)
Coord. (centered): 33,7° South Lat. and 202,9° East Long.
Spacecraft altitude: 253,3 Km (such as about 158,3 miles)
Original image scale range: 50,7 cm/pixel (with 1 x 1 binning) so objects ~1,52 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 5,2°
Phase Angle: 71,8°
Solar Incidence Angle: 75° (meaning that the Sun is about 15° above the Local Horizon)
Solar Longitude: 127,3° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010025_1410_RED.jpgDark Area in Hartwig Crater (possible True Colors; credits: Lunar Explorer Italia)53 visiteMars Local Time: 15:39 (middle afternoon)
Coord. (centered): 38,2° South Lat. and 344,1° East Long.
Spacecraft altitude: 256,7 Km (such as about 160,4 miles)
Original image scale range: 51,4 cm/pixel (with 1 x 1 binning) so objects ~1,54 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 6,6°
Phase Angle: 82,8°
Solar Incidence Angle: 78° (meaning that the Sun is about 12° above the Local Horizon)
Solar Longitude: 127,6° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010027_1745_RED.jpgLayers in Candor Mensa (natural colors; credits: Lunexit)54 visiteThis image shows Layered Sedimentary Deposits in Candor Mensa, a broad plateau of thickly stacked sedimentary rocks in Candor Chasma, part of the giant troughs of Valles Marineris.
Valles Marineris is a system of tectonic depressions formed by down-dropping faults; the floors are among the lowest points on the surface of Mars, and may have once held lakes. Some sites show evidence for streams or rivers. The troughs may have also been sites of volcanic activity.
Currently, the deep floors contain massive deposits of bright sedimentary rocks. Some of the deposits are several kilometers thick, and have diverse composition and appearance. They were probably formed by many different processes in different environments.
At this site, most of the bright rocks exhibit a scalloped, patterned texture.
This is thought to be associated with low-density deposits undergoing wind erosion, although the process is still not well-understood. Despite this relatively uniform texture, some variations are evident. The Southern (left) part of the Deposit is relatively uniform, while the central portion appears to have thin layers.
On close inspection, the layers near the center of the image are all composed of the same material; they are probably visible due to slight topographic steps caused by variations in the strength of the rock. The layers have been highlighted by a mantle of dark, wind-blown sand ripples, which cover the flat parts of the stepped structure. At low resolution, this gives the appearance of alternating light and dark layers.
In the Northernmost part of the image (right), the sediments have an entirely different texture, ranging from massive to fractured. These sediments also show evidence of layering.
Interpretation of these sediments is complicated by younger mantling materials. In addition to the sand ripples (some of which may have hardened to rock), a relatively massive dark layer appears to cap or drape the deposit in many places, including the southern part of this image.MareKromium
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PSP_010040_2640_RED~0.jpgEnds of n. 2 North Polar Troughs (possible True Colors; credits: Lunar Explorer Italia)96 visiteMars Local Time: 14:16 (early afternoon)
Coord. (centered): 83,8° North Lat. and 264,3° East Long.
Spacecraft altitude: 321,4 Km (such as about 200,9 miles)
Original image scale range: 32,2 cm/pixel (with 1 x 1 binning) so objects ~96 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 7,4°
Phase Angle: 59,4°
Solar Incidence Angle: 65° (meaning that the Sun is about 25° above the Local Horizon)
Solar Longitude: 128,2° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_010047_1745_RED-00.jpgStar-like shaped Hill in Terra Tyrrhena (possible True Colors; credits: Lunar Explorer Italia)61 visiteMars Local Time: 15:34 (middle afternoon)
Coord. (centered): 5,2° South Lat. and 99,6° East Long.
Spacecraft altitude: 264,2 Km (such as about 165,1 miles)
Original image scale range: 26,4 cm/pixel (with 1 x 1 binning) so objects ~52,9 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 1,6°
Phase Angle: 59,6°
Solar Incidence Angle: 58° (meaning that the Sun is about 32° above the Local Horizon)
Solar Longitude: 128,4° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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