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Add Image to Favorite List 2003-04-15 Mars 2001 Mars Odyssey
 THEMIS
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The circular depressions prevalent throughout this scene from NASA's Mars Odyssey at first glance appear to be craters, but are they? Could they be pits formed by devolatilization? It is not clear. Scientists are studying these features in search of answe
PIA04461:
Ismenia Fossae: Craters or Pits?
Full Resolution:     TIFF (3.147 MB)     JPEG (548.8 kB)
Add Image to Favorite List 2003-04-15 Mars 2001 Mars Odyssey
 THEMIS
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Tall narrow ridges snake between mesas and buttes in this image from NASA's Mars Odyssey. Where one such ridge crosses a flat-topped mesa (in the lower center of the image), the mesa surface is split into two surfaces of different heights.
PIA04462:
Ridges
Full Resolution:     TIFF (2.951 MB)     JPEG (433.4 kB)
Add Image to Favorite List 2003-04-15 Mars 2001 Mars Odyssey
 THEMIS
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Hummocky, textured terrain within lava flows northwest of Pavonis Mons, one of the Tharsis volcanoes, is shown in this image from NASA's Mars Odyssey spacecraft.
PIA04463:
Textured Terrain
Full Resolution:     TIFF (3.605 MB)     JPEG (866 kB)
Add Image to Favorite List 2003-04-15 Mars 2001 Mars Odyssey
 THEMIS
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The Medusae Fossae formation, seen in this NASA Mars Odyssey image, is an enigmatic pile of eroding sediments that spans over 5,000 km (3,107 miles) in discontinuous masses along the Martian equator.
PIA04464:
Medusae Fossae Yardangs
Full Resolution:     TIFF (3.427 MB)     JPEG (638.4 kB)
Add Image to Favorite List 2003-04-16 Mars 2001 Mars Odyssey
 THEMIS
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The surface textures observed in this NASA Mars Odyssey image of Ascraeus Mons are due to different volcanic flow types. Textural variations can be produced under a variety of different conditions such as varying cooling and flow rates.
PIA04466:
Ascraeus Mons
Full Resolution:     TIFF (3.654 MB)     JPEG (794.3 kB)
Add Image to Favorite List 2003-04-18 Mars 2001 Mars Odyssey
 THEMIS
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The remarkable terrain at the 'center' of Mars (0 degrees latitude and longitude), as seen in this NASA Mars Odyssey image, is called Meridiani Planum. It hosts a rare occurrence of gray crystalline hematite.
PIA04469:
Northeastern Meridiani
Full Resolution:     TIFF (3.507 MB)     JPEG (743.5 kB)
Add Image to Favorite List 2003-04-18 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey spacecraft shows a crazy mixture of bizarre surface features in Lucus Planum.
PIA04470:
Lucus Planum
Full Resolution:     TIFF (3.509 MB)     JPEG (787.6 kB)
Add Image to Favorite List 2003-04-21 Mars 2001 Mars Odyssey
 THEMIS
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The crosscutting relationships observed in this image from NASA's Mars Odyssey spacecraft can be used to determine the relative timing of graben and channel formations.
PIA04471:
Crosscutting Grabens
Full Resolution:     TIFF (3.238 MB)     JPEG (578 kB)
Add Image to Favorite List 2003-04-25 Mars 2001 Mars Odyssey
 THEMIS
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Streamlined buttes and mesas are left as remnants of an erosive wind that has carried away sediments and even the rim of a small crater in this image from NASA's Mars Odyssey spacecraft.
PIA04478:
Erosion and Wind Deposition
Full Resolution:     TIFF (3.389 MB)     JPEG (593.9 kB)
Add Image to Favorite List 2003-04-25 Mars 2001 Mars Odyssey
 THEMIS
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Embayment relationship is displayed where mottled plains material laps up against higher standing plains material in this image from NASA's Mars Odyssey spacecraft. The embaying material could be lava or possibly mud.
PIA04479:
Embayment
Full Resolution:     TIFF (3.246 MB)     JPEG (648.2 kB)
Add Image to Favorite List 2003-04-25 Mars 2001 Mars Odyssey
 THEMIS
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Amidst the hummocky topography produced by the ejecta from Lyot crater, smooth patches of material fill shallow depressions in this NASA Mars Odyssey image.
PIA04480:
Is It Snow?
Full Resolution:     TIFF (3.304 MB)     JPEG (544.8 kB)
Add Image to Favorite List 2003-04-28 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey spacecraft shows several lava flows in Lycus Sulci. Notice the streamlined features near the bottom of the image indicating the flow direction.
PIA04482:
Lycus Sulci
Full Resolution:     TIFF (3.164 MB)     JPEG (647.1 kB)
Add Image to Favorite List 2003-05-02 Mars 2001 Mars Odyssey
 THEMIS
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The predominant feature in this image from NASA's Mars Odyssey spacecraft is a large flooded crater. Are the flows lava or mud? Scientists don't agree.
PIA04489:
Western Amazonis Flow Features and Crater Interaction
Full Resolution:     TIFF (3.143 MB)     JPEG (528.4 kB)
Add Image to Favorite List 2003-05-02 Mars 2001 Mars Odyssey
 THEMIS
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The ejecta material of the impact crater on Mars observed in this image from NASA's 2001 Mars Odyssey spacecraft is partly eroded as the trend of a regional geologic unit is beginning to emerge from beneath, or actively form on top of, the blanket.
PIA04490:
Eroded Ejecta
Full Resolution:     TIFF (3.496 MB)     JPEG (680.6 kB)
Add Image to Favorite List 2003-05-02 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey shows the northeast flank of the 27 km-high volcano Ascraeus Mons on Mars, a set of collapse pits and troughs.
PIA04491:
Martian Kanji
Full Resolution:     TIFF (3.406 MB)     JPEG (646.1 kB)
Add Image to Favorite List 2003-05-05 Mars 2001 Mars Odyssey
 THEMIS
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NASA's 2001 Mars Odyssey spacecraft imaged this low-relief shield volcano on Mars showing two large vents which have erupted several individual lava flows.
PIA04503:
Volcano Vents
Full Resolution:     TIFF (3.732 MB)     JPEG (899 kB)
Add Image to Favorite List 2003-05-08 Mars 2001 Mars Odyssey
 THEMIS
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Craters, pit chains, graben, and lava flows south of Alba Patera, a volcano located within the Tharsis volcanic complex on Mars as seen by NASA's 2001 Mars Odyssey spacecraft.
PIA04504:
Craters, Pit Chains, and Graben, Oh My!
Full Resolution:     TIFF (3.412 MB)     JPEG (617.3 kB)
Add Image to Favorite List 2003-05-08 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey shows the westernmost extent of the Medusae Fossae Formation on Mars, a 5000+ km long belt of eroding sediments, the interleaving of erosional surfaces produces dramatic textural variations.
PIA04505:
Deposition + Erosion = Textures
Full Resolution:     TIFF (3.816 MB)     JPEG (765.3 kB)
Add Image to Favorite List 2003-05-08 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey observed variable surface textures on Mars, the result of different lava flow units.
PIA04506:
Surface Textures
Full Resolution:     TIFF (3.247 MB)     JPEG (515.2 kB)
Add Image to Favorite List 2003-05-14 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey shows lines indicative of flow in a valley floor on Mars cut across similar lines in a slightly smaller valley, indicating both that material flowed along the valley floor.
PIA04510:
Flow Along Valley Floors
Full Resolution:     TIFF (3.287 MB)     JPEG (601.4 kB)
Add Image to Favorite List 2003-05-14 Mars 2001 Mars Odyssey
 THEMIS
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A cliff of many terraces steps down from the south to the north in this image from NASA's Mars Odyssey, showing many successive layers of material now eroded and exposed to the wind.
PIA04511:
Layers Upon Layers
Full Resolution:     TIFF (3.153 MB)     JPEG (534.7 kB)
Add Image to Favorite List 2003-05-14 Mars 2001 Mars Odyssey
 THEMIS
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Goofy ground patterns near the striking split between the Martian southern highlands and northern lowlands are seen in this image captured by NASA's Mars Odyssey.
PIA04512:
Ground Patterns
Full Resolution:     TIFF (3.548 MB)     JPEG (699.6 kB)
Add Image to Favorite List 2003-05-14 Mars 2001 Mars Odyssey
 THEMIS
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At the summit of the low-relief shield volcano Syrtis Major on Mars, the caldera known as Nili Patera hosts a remarkable field of barchan-like dunes as seen in this image captured by NASA's Mars Odyssey spacecraft.
PIA04513:
Nili Patera
Full Resolution:     TIFF (3.394 MB)     JPEG (557.6 kB)
Add Image to Favorite List 2003-05-16 Mars 2001 Mars Odyssey
 THEMIS
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An unusual crater northeast of Ascraeus Mons on Mars displays an ejecta blanket that appears turned up around its edges, as seen in this image from NASA's Mars Odyssey.
PIA04522:
Unusual Crater
Full Resolution:     TIFF (3.551 MB)     JPEG (664.1 kB)
Add Image to Favorite List 2003-05-16 Mars 2001 Mars Odyssey
 THEMIS
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Classic catastrophic flood morphology (streamlined hills and longitudinal grooves) is captured in this image from NASA's Mars Odyssey of Lunae Planum on Mars.
PIA04523:
Streamlined Hills of Maja Vallis
Full Resolution:     TIFF (3.46 MB)     JPEG (685.1 kB)
Add Image to Favorite List 2003-05-26 Mars 2001 Mars Odyssey
 THEMIS
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This image from NASA's Mars Odyssey shows fine-scale textures around a crater southwest of Athabasca Vallis. These fine scale ridges are most likely the remnants of older flood eroded layered rocks and not longitudinal grooves carved out of the landscape.
PIA04534:
Fine-scale Textures
Full Resolution:     TIFF (3.3 MB)     JPEG (624.9 kB)
Add Image to Favorite List 2003-05-26 Mars 2001 Mars Odyssey
 THEMIS
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This crater on Mars is located at 37°N, a latitude far enough north that ground ice is present, and it sculpts the terrain when it moves. This image is from NASA's Mars Odyssey.
PIA04535:
Crater Deformation
Full Resolution:     TIFF (3.463 MB)     JPEG (622.9 kB)
Add Image to Favorite List 2003-05-26 Mars 2001 Mars Odyssey
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Just a small part of the huge Kasei Valles outflow channel on Mars is shown in this image captured by NASA's Mars Odyssey. Still, the awesome erosive power of the water that once flowed through this channel is evident.
PIA04536:
Kasei Valles
Full Resolution:     TIFF (3.142 MB)     JPEG (352.8 kB)
Add Image to Favorite List 2003-05-26 Mars 2001 Mars Odyssey
 THEMIS
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A channel-like feature roughly halfway between the Isidis Basin and Elysium Mons on Mars shows no connection to either a source region or terminal basin is seen in this image from NASA's Mars Odyssey.
PIA04537:
Channel to Nowhere
Full Resolution:     TIFF (3.792 MB)     JPEG (849.4 kB)
Add Image to Favorite List 2003-05-26 Mars 2001 Mars Odyssey
 THEMIS
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Just south of the 2 km high main mass of the Medusae Fossae Formation, in a region dissected by channels, lies an unnamed crater that may have been filled by mud, as seen by NASA's Mars Odyssey.
PIA04538:
Isidis Planitia
Full Resolution:     TIFF (2.949 MB)     JPEG (497.2 kB)
Add Image to Favorite List 2003-05-29 Mars 2001 Mars Odyssey
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This image taken by NASA's 2001 Mars Odyssey shows the Medusae Fossae Formation, in a region dissected by channels, lies an unnamed crater that may have been filled by mud on the martian landscape.
PIA04544:
Crater in the Mangala Valles Region
Full Resolution:     TIFF (3.074 MB)     JPEG (516.7 kB)
Add Image to Favorite List 2003-05-29 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows Mangala Vallis, one of the large outflow channels on Mars.
PIA04545:
Old Geology and New Geology
Full Resolution:     TIFF (3.677 MB)     JPEG (631.4 kB)
Add Image to Favorite List 2003-05-29 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows strange-looking grooved terrain overlies lava flows off of the western flank of the giant shield volcano Arsia Mons on Mars.
PIA04546:
Grooved Terrain
Full Resolution:     TIFF (3.797 MB)     JPEG (793.1 kB)
Add Image to Favorite List 2003-06-02 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows lava flows and channels are visible here on the eastern flanks of Ascraeus Mons. One of the channels is bordered by levees, which form as lava overflows the channel banks, cools and solidifies.
PIA04553:
Lava Flows
Full Resolution:     TIFF (3.442 MB)     JPEG (806.3 kB)
Add Image to Favorite List 2003-06-02 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows Hebes Chasma, the northernmost canyon of Mars' vast Valles Marineris system.
PIA04554:
Hebes ILD
Full Resolution:     TIFF (3.36 MB)     JPEG (574.6 kB)
Add Image to Favorite List 2003-06-03 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows two craters in Arabia Terra on Mars, in the old cratered highlands, are surrounded by many small mesas.
PIA04555:
Eroded Crater Ejecta
Full Resolution:     TIFF (3.276 MB)     JPEG (519.5 kB)
Add Image to Favorite List 2003-06-12 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows chaotic terrain on Mars is thought to form when there is a sudden removal of subsurface water or ice, causing the surface material to slump and break into blocks.
PIA04556:
Chaotic Terrain
Full Resolution:     TIFF (3.316 MB)     JPEG (498.3 kB)
Add Image to Favorite List 2003-06-12 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows the height of the interior mound of sediment inside this unnamed crater on Mars.
PIA04557:
Bizarre Crater Mound
Full Resolution:     TIFF (3.129 MB)     JPEG (491.8 kB)
Add Image to Favorite List 2003-06-12 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows rugged terrain that is part of a massive lobe of material extending from the basal scarp of Mars' Olympus Mons is called sulci, which means furrows or grooves.
PIA04558:
Lycus Sulci
Full Resolution:     TIFF (3.115 MB)     JPEG (389.8 kB)
Add Image to Favorite List 2003-06-12 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey showing large, tilted blocks of chaotic terrain in Masursky Crater on Mars. Chaotic terrain is thought to occur when subsurface water is suddenly released to the surface.
PIA04559:
Masursky Crater
Full Resolution:     TIFF (3.548 MB)     JPEG (579.8 kB)
Add Image to Favorite List 2003-06-12 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows that polar regions of Mars have surfaces than can show dark spots on a brighter background. These surfaces are informally called 'dalmatian terrain' because of their appearance.
PIA04560:
Dalmatian Terrain
Full Resolution:     TIFF (3.081 MB)     JPEG (555 kB)
Add Image to Favorite List 2003-06-12 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows a crater called Gusev in the southern hemisphere of Mars. This crater may have been the site of an ancient lake.
PIA04561:
Destination: Gusev
Full Resolution:     TIFF (3.345 MB)     JPEG (582.7 kB)
Add Image to Favorite List 2003-06-17 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows craters and hills form high standing streamlined plateaus or islands in a channeled area on the martian landscape.
PIA04576:
Lava-Filled Craters
Full Resolution:     TIFF (3.665 MB)     JPEG (701.2 kB)
Add Image to Favorite List 2003-06-17 Mars 2001 Mars Odyssey
 MOLA
Thermal Emission Imaging System
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This image taken by NASA's 2001 Mars Odyssey shows high canyon walls of Valles Marineris on Mars. Geologic materials that are more resistant to erosion produce cliff forming units while landslides and streaks are observed on slope units.
PIA04577:
Canyon Walls
Full Resolution:     TIFF (2.865 MB)     JPEG (287.6 kB)
Add Image to Favorite List 2003-06-19 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows platy surface texture of the vast plains southeast of the volcano Elysium Mons on Mars likely formed by very fluid cooling lava.
PIA04578:
Volcanic Surface Textures
Full Resolution:     TIFF (3.929 MB)     JPEG (958 kB)
Add Image to Favorite List 2003-06-19 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows 'etched terrain' near the south pole of Mars. In several places in this image there are large areas with many dark spots.
PIA04579:
Etched Terrain
Full Resolution:     TIFF (2.867 MB)     JPEG (390.9 kB)
Add Image to Favorite List 2003-06-19 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows an outflow channel to the east of the Tharsis volcanos and north of Valles Marineris on Mars.
PIA04580:
Wind, Water, and Lava
Full Resolution:     TIFF (3.37 MB)     JPEG (538 kB)
Add Image to Favorite List 2003-06-20 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows a flat-floored crater in Mars' central Arabia hosts an interior crater with interesting ejecta. The scrambled patterns in the ejecta suggest fluidized flow during emplacement.
PIA04585:
Smooth and Scrambled
Full Resolution:     TIFF (3.339 MB)     JPEG (673 kB)
Add Image to Favorite List 2003-06-20 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows a dissected and eroded channel in plains materials southwest of Mars' volcano Elysium Mons shows typical erosional islands and depositional features.
PIA04586:
Channels and Erosion
Full Resolution:     TIFF (3.23 MB)     JPEG (613.6 kB)
Add Image to Favorite List 2003-06-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Observations by NASA's 2001 Mars Odyssey spacecraft show a summertime view of the north polar region of Mars in intermediate-energy, or epithermal, neutrons.
PIA04593:
Summer in Mars' North Polar Region
Full Resolution:     TIFF (10.15 MB)     JPEG (337.8 kB)
Add Image to Favorite List 2003-06-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Observations by NASA's 2001 Mars Odyssey spacecraft show a summertime view of the north polar region of Mars in intermediate-energy, or epithermal, neutrons.
PIA04595:
Winter in Mars' North Polar Region
Full Resolution:     TIFF (9.608 MB)     JPEG (381.1 kB)
Add Image to Favorite List 2003-06-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Observations by NASA's 2001 Mars Odyssey spacecraft show a comparison of wintertime (left) and summertime (right) views of the north polar region of Mars in intermediate-energy, or epithermal, neutrons.
PIA04596:
Seasonal Frost Changes on Mars
Full Resolution:     TIFF (4.931 MB)     JPEG (239.6 kB)
Add Image to Favorite List 2003-07-01 Mars 2001 Mars Odyssey
 THEMIS
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This image taken by NASA's 2001 Mars Odyssey shows lava flows from the broad shield volcano Syrtis Major have poured into the Isidis Basin to the east on Mars.
PIA04597:
Syrtis in Retreat
Full Resolution:     TIFF (3.201 MB)     JPEG (538.5 kB)
Add Image to Favorite List 2010-03-25 Mars 2001 Mars Odyssey
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Dark slope streaks, like the ones in this unnamed crater in Terra Sabaea on Mars, are believed to be formed when surface dust is displaced and the darker rock below is exposed. This image is from NASA's 2001 Mars Odyssey spacecraft.
PIA12981:
Dark Slope Streak
Full Resolution:     TIFF (3.699 MB)     JPEG (284.9 kB)
Add Image to Favorite List 2003-07-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003 of dalmatian terrain near Mars' south pole. The bright material is polar ice and the dark spots dark sands that are appearing in depressions where the ice has defrosted.
PIA04607:
Dalmatian Terrain
Full Resolution:     TIFF (2.891 MB)     JPEG (482.6 kB)
Add Image to Favorite List 2003-07-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003 of small hills/mounds in Isidis Planitia on Mars which may be of volcanic origin or alternatively eroded impact craters called pedestal craters.
PIA04608:
Bumps and Humps
Full Resolution:     TIFF (3.673 MB)     JPEG (805.3 kB)
Add Image to Favorite List 2003-07-03 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003 of defrosting dunes of the southern hemisphere in southern summer on Mars.
PIA04611:
Dunes
Full Resolution:     TIFF (3.184 MB)     JPEG (508.8 kB)
Add Image to Favorite List 2003-07-09 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003 of platy flows covering the plains of Southern Elysium on Mars. These flows appear to be very fluid lava flows but a mudflow origin can't be completely ruled out for these flows.
PIA04617:
Platy Flows
Full Resolution:     TIFF (3.412 MB)     JPEG (673.3 kB)
Add Image to Favorite List 2003-07-09 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003 of Meridiani Planum on Mars, which contains a mineral called hematite, usually forming in the presence of water.
PIA04618:
Destination: Meridiani
Full Resolution:     TIFF (3.221 MB)     JPEG (489.9 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, roughly halfway between the great volcanoes of Olympus Mons and Pavonis Mons, the graben (troughs) of Ulysses Fossae intersect with the furrows of Gigas (gigantic) Sulci.
PIA04642:
Gigas Meets Ulysses
Full Resolution:     TIFF (3.334 MB)     JPEG (648.5 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing the central uplift of an impact crater on Mars that formed by inward and upward movement of material below the crater floor during the crater-forming event.
PIA04643:
Crater Interior
Full Resolution:     TIFF (3.603 MB)     JPEG (791.9 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing lava has flooded this crater in Daedalia Planum on Mars.
PIA04644:
Lava Flows
Full Resolution:     TIFF (3.095 MB)     JPEG (611.6 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing graben (fracture) in Memnonia Fossae, noteworthy because one can still see large blocks on the floor. These blocks most likely dropped down from above when the fracture opened up.
PIA04645:
Fractures and Collapse
Full Resolution:     TIFF (3.35 MB)     JPEG (457 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing a crater named after Dutch astronomer Christian Huygens (1629-1695) with an unusual texture. Smooth-topped mesas are scattered across a more rugged surface.
PIA04646:
Huygens Crater
Full Resolution:     TIFF (3.547 MB)     JPEG (801.2 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing a complex process of deposition, burial and exhumation. The crater ejecta at top is in the form of flow lobes, indicating that the crater was formed in volatile-rich terrain.
PIA04647:
Processes of Geology
Full Resolution:     TIFF (3.478 MB)     JPEG (664.3 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing fine-scale layered deposits in both N/S polar regions. At the south pole, alternating light and dark bands represent varying amounts of dust or sand mixed in with carbon dioxide ice.
PIA04648:
South Polar Layered Deposits
Full Resolution:     TIFF (3.349 MB)     JPEG (501.3 kB)
Add Image to Favorite List 2003-07-18 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing Tader Valles, a set of small channels at mid-southern latitudes that is filled by smooth material with rounded margins. This may be snow covered by a mantle of dust or dirt.
PIA04649:
Tader Valles
Full Resolution:     TIFF (3.563 MB)     JPEG (1.072 MB)
Add Image to Favorite List 2003-07-23 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing mesas with interesting erosional patterns just south of Olympus Mons on Mars.
PIA04651:
Eroded Mesas
Full Resolution:     TIFF (3.521 MB)     JPEG (660.1 kB)
Add Image to Favorite List 2003-07-24 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing the western slope of the Tharsis volcanic bulge. This landscape on Mars shows the effect of the large-scale wind regime of the region.
PIA04659:
Wind Effects in Tharsis
Full Resolution:     TIFF (3.524 MB)     JPEG (730.9 kB)
Add Image to Favorite List 2003-07-29 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing wrinkle ridges deforming the plains in the bottom of Gusev crater. The plains were likely created from a flood basalt with ridges forming where there were compressional forces.
PIA04661:
Gusev Crater
Full Resolution:     TIFF (3.208 MB)     JPEG (640.2 kB)
Add Image to Favorite List 2003-07-30 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing the strange landscape of the eroding Medusa Fossae Formation. In the southern portion, small mounds of sedimentary material are all that remains of a once more continuous layer.
PIA04666:
Remnants of MFF
Full Resolution:     TIFF (3.685 MB)     JPEG (1.013 MB)
Add Image to Favorite List 2003-07-30 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing valley networks, a relatively common feature in the southern highlands of Mars.
PIA04667:
Valley Networks
Full Resolution:     TIFF (3.458 MB)     JPEG (574.8 kB)
Add Image to Favorite List 2003-07-31 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing remarkable differences in brightness and texture are apparent between these lava flows found on the southern flanks of Arsia Mons on Mars.
PIA04671:
Lava Flows
Full Resolution:     TIFF (3.208 MB)     JPEG (898.2 kB)
Add Image to Favorite List 2003-08-01 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in July 2003, showing younger crenulated lava flows of Daedalia Planum lap up against the ancient highlands on Mars. The crenulated ridges are most likely pressure ridges.
PIA04673:
Crenulated Lava Flows of Daedalia Planum
Full Resolution:     TIFF (3.615 MB)     JPEG (900.1 kB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing knobby terrain is in the southern highlands on Mars.
PIA04701:
Knobby Terrain Down Under
Full Resolution:     TIFF (3.145 MB)     JPEG (724.1 kB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing parallel grooves oriented north to south, slowly eroded by winds of the same alignment. At bottom, a round mesa is most likely an inverted crater on Mars.
PIA04702:
Wind-sculpted Rocks
Full Resolution:     TIFF (3.628 MB)     JPEG (833.8 kB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing the floor of a crater just north of the Argyre basin in the southern hemisphere. Dark dunes have been pushed up against the northeastern interior rim of the crater on Mars.
PIA04703:
Dunes in a Crater Floor
Full Resolution:     TIFF (3.659 MB)     JPEG (1.022 MB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing large grooves indicating tectonic faulting cross just south of the Tharsis Monteson Mars.
PIA04704:
Craters and Grabens: Circles and Lines
Full Resolution:     TIFF (3.364 MB)     JPEG (572.5 kB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing a large outflow channel, split and diverted around an obstacle just north of Memnonia Fossae on Mars.
PIA04705:
Outflow Channel
Full Resolution:     TIFF (3.696 MB)     JPEG (1.031 MB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing a crater named after a Swedish astronomer, Charlier, hosts a dune field that is brightened by a layer of frost on Mars.
PIA04706:
Charlier Crater Dunes
Full Resolution:     TIFF (3.261 MB)     JPEG (496.1 kB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing an unusual layer of smooth material covering the flanks of the volcano Peneus Patera just south of the Hellas Basin on Mars.
PIA04707:
Peneus Patera
Full Resolution:     TIFF (3.217 MB)     JPEG (595.1 kB)
Add Image to Favorite List 2003-08-28 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing a great highland/lowland boundary that divides the whole of Mars cuts diagonally. This may be a remnant of the Medussae Fossae Formation.
PIA04708:
Three Terrains
Full Resolution:     TIFF (3.185 MB)     JPEG (706.9 kB)
Add Image to Favorite List 2003-09-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing Koga crater, named for a town in Tanzania. It is located in a region called Claritas Fossae on Mars. A mantle of fine material that is draped over much of the terrain.
PIA04709:
Koga Crater
Full Resolution:     TIFF (2.97 MB)     JPEG (520.8 kB)
Add Image to Favorite List 2003-09-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing knobby terrain and an eroded impact crater in the Eumenides Dorsum region on Mars; evidence the surface has been heavily modified and stripped over time.
PIA04710:
Eroded Surfaces
Full Resolution:     TIFF (3.564 MB)     JPEG (734 kB)
Add Image to Favorite List 2003-09-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing steep canyon walls and ridge-forming layers of Valles Marineris on Mars.
PIA04711:
Valles Marineris Landforms
Full Resolution:     TIFF (2.425 MB)     JPEG (305 kB)
Add Image to Favorite List 2003-09-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing the southern flank of the massive Pavonis Mons volcano on Mars which hosts a remarkable concentration of channels, pit chains, and graben.
PIA04712:
A Suite of Features
Full Resolution:     TIFF (2.898 MB)     JPEG (452.7 kB)
Add Image to Favorite List 2003-09-02 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing several linear cross-cutting grabens and collapse features on Mars.
PIA04713:
Cross-Cutting Relationships
Full Resolution:     TIFF (3.22 MB)     JPEG (575.3 kB)
Add Image to Favorite List 2003-09-03 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing curious graben on the floor of Sirenum Fossae on Mars. The braided pattern suggests that water has flowed through this fracture in the past.
PIA04714:
Sirenum Fossae
Full Resolution:     TIFF (2.688 MB)     JPEG (500.3 kB)
Add Image to Favorite List 2003-09-03 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing part of the western flank of Arsia Mons, the southernmost of the three great Tharsis Montes on Mars. The surface shows parallel ridges.
PIA04715:
Alpine Glaciers
Full Resolution:     TIFF (2.861 MB)     JPEG (483.4 kB)
Add Image to Favorite List 2003-09-03 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing an area not too far south of Meridiani where the mineral hematite was found on the Martian surface.
PIA04716:
Upside Down Craters
Full Resolution:     TIFF (3.493 MB)     JPEG (799.2 kB)
Add Image to Favorite List 2003-09-03 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in August 2003, showing a crater on Mars in the rugged Thaumasia uplands surrounding Solis Lacus containing an unusual filling of smooth material ramped up against the crater rim.
PIA04717:
Thaumasia Crater
Full Resolution:     TIFF (3.378 MB)     JPEG (658.4 kB)
Add Image to Favorite List 2003-09-03 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in Sept 2003, showing the northern rim of Hale Crater on Mars, located in Noachis Terra, heavily dissected by the enigmatic gullies whose origin has been attributed to snow melt, ground water discharge.
PIA04718:
Gullies Galore!
Full Resolution:     TIFF (3.427 MB)     JPEG (687.2 kB)
Add Image to Favorite List 2003-09-08 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing concentric crater floor deposits in Daedalia Planumon Mars. Lava flows appear to be converging on this crater from the northeast as well as on the crater floor.
PIA04728:
Concentric Crater Floor Deposits in Daedalia Planum
Full Resolution:     TIFF (3.349 MB)     JPEG (559.8 kB)
Add Image to Favorite List 2003-09-08 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing heavily cratered southern highlands of Mars. Elliptical craters with 'butterfly' ejecta patterns make up roughly 5% of the total crater population of Mars.
PIA04729:
Butterfly Ejecta
Full Resolution:     TIFF (3.156 MB)     JPEG (672.5 kB)
Add Image to Favorite List 2003-09-08 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing dark dunes sit on a rough, eroding sedimentary surface in the floor of a crater on Mars, one of dozens in Noachis Terra, to have both dark dunes and an eroding surface.
PIA04730:
Dune Field in a Southern Highlands Crater
Full Resolution:     TIFF (2.688 MB)     JPEG (454.3 kB)
Add Image to Favorite List 2003-09-08 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing degraded remains of a crater on Mars. This type of surface material is thought to be a mixture of dust and ice.
PIA04731:
Central Peak
Full Resolution:     TIFF (3.453 MB)     JPEG (780.5 kB)
Add Image to Favorite List 2003-09-15 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing a crater on Mars along the southeast rim of the Hellas Basin,hosting an eroded layered deposit like many of the neighboring craters.
PIA04739:
Spallanzani's Neighbor
Full Resolution:     TIFF (3.477 MB)     JPEG (833.3 kB)
Add Image to Favorite List 2003-09-15 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing the westernmost end of the enormous Valles Marineris canyon system on Mars wherein lies the ruptured landscape known as Noctis Labyrinthus.
PIA04740:
Noctis Labyrinthus
Full Resolution:     TIFF (2.226 MB)     JPEG (251 kB)
Add Image to Favorite List 2003-09-15 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing Arkhangelsky crater, just to the northeast of the giant Argyre impact basin in the southern hemisphere of Mars. A few dark barchan dunes are seen on the floor of this crater.
PIA04741:
Arkhangelsky Crater
Full Resolution:     TIFF (3.57 MB)     JPEG (905.2 kB)
Add Image to Favorite List 2003-09-19 Mars 2001 Mars Odyssey
 THEMIS
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NASA's Mars Odyssey spacecraft captured this image in September 2003, showing Ruza impact crater on Mars with very interesting gullies and migrating sand dunes, north of Argyre Planitia.
PIA04742:
Marching Dunes
Full Resolution:     TIFF (3.633 MB)     JPEG (892 kB)
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