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Addition Date Target Mission InstrumentSort Ascending Size
Add Image to Favorite List 2002-12-13 Mars 2001 Mars Odyssey
THEMIS
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This pair of craters seen by NASA's Mars Odyssey just north of the Hellas Basin demonstrate the rugged topography that can result when an impact occurs on the rim of an existing crater.
PIA04027:
Crater Upon Crater
Full Resolution:     TIFF (3.379 MB)     JPEG (593.3 kB)
Add Image to Favorite List 2002-12-17 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft was acquired of Candor Chasma within Valles Marineris and shows the effects of erosion on a sequence of dramatically layered rocks.
PIA04028:
Candor Chasma on Mars, in Color
Full Resolution:     TIFF (3.323 MB)     JPEG (191.8 kB)
Add Image to Favorite List 2002-12-13 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows Rampart crater in Utopia Planitia, west of NASA's Viking 2 landing site.
PIA04029:
Rampart Crater
Full Resolution:     TIFF (2.992 MB)     JPEG (509.5 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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This NASA Mars Odyssey image shows the dissected interior of a crater in the Cydonia region of Mars. The flat-topped buttes and mesas in the northern portion of the image were once a continuous layer of material that filled the crater.
PIA04030:
Crater in Cydonia
Full Resolution:     TIFF (3.11 MB)     JPEG (539.6 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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The channels and impact crater rim shown in this NASA Mars Odyssey image provide insight to the forces that have sculpted the surface within the extensive Reull Vallis network.
PIA04031:
Reull Vallis
Full Resolution:     TIFF (3.368 MB)     JPEG (584.1 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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Palos Crater, seen in this NASA Mars Odyssey image, has been suggested as a future landing site for Mars missions because it may contain lake deposits. This crater has a channel called Tinto Vallis, which enters from the south.
PIA04032:
Palos Crater
Full Resolution:     TIFF (3.305 MB)     JPEG (636 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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This scene from NASA's Mars Odyssey spacecraft of the dust covered plains of eastern Arabia Terra portrays a range of geological time. Three craters at the center of the image capture some of this range.
PIA04033:
Geological Time on Display in Arabia Terra
Full Resolution:     TIFF (3.261 MB)     JPEG (593.3 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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Located north of Olympus Mons and west of Alba Patera, Acheron Fossae, seen in this NASA Mars Odyssey image, provides a record of early tectonic activity in the Tharsis region.
PIA04034:
Western Portion of Acheron Fossae
Full Resolution:     TIFF (3.31 MB)     JPEG (565.3 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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Hills abound in this portion of Mars imaged by NASA's Mars Odyssey that shows the Vastitas Borealis region of the high northern plains. These hills are part of Scandia Colles.
PIA04035:
Bumpy Terrain
Full Resolution:     TIFF (3.319 MB)     JPEG (783.3 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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In this region of the Olympus Mons aureole, located to the southwest of the volcano, the surface has been eroded by the wind into linear landforms called yardangs, which can be seen in this image from NASA's Mars Odyssey spacecraft.
PIA04036:
Yardangs near Olympus Mons
Full Resolution:     TIFF (3.46 MB)     JPEG (792.9 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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The force of moving water from a flood carved these teardrop-shaped islands within Granicus Valles, imaged here by NASA's Mars Odyssey spacecraft. The orientation of the islands can be used as an indicator of the direction the water flowed.
PIA04037:
Granicus Valles
Full Resolution:     TIFF (2.864 MB)     JPEG (483.1 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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Arcadia Planitia, shown in this NASA Mars Odyssey image, occupies a region just north of Amazonis Planitia, one of the brightest and dustiest regions on Mars.
PIA04038:
Arcadia Planitia Dark Splotch
Full Resolution:     TIFF (3.305 MB)     JPEG (713.7 kB)
Add Image to Favorite List 2002-12-16 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey of lava flows around the large scarp of Olympus Mons reveals textures characteristic of the variable surface roughness associated with different lava flows in this region.
PIA04039:
Lava Flows around Olympus Mons
Full Resolution:     TIFF (3.315 MB)     JPEG (688.9 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows a location within Semeykin Crater, which is in the Martian northern hemisphere.
PIA04040:
Semeykin Crater
Full Resolution:     TIFF (2.976 MB)     JPEG (513.8 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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Much of the northern lowlands of Mars are thought to be relatively young volcanic flows with varying amounts of windblown dust cover. The lack of impact craters in this image from NASA's Mars Odyssey spacecraft indicate the young age of the surface.
PIA04041:
Acidalia Planitia
Full Resolution:     TIFF (3.019 MB)     JPEG (550.2 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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An isolated mesa east of the Phlegra Montes in northeastern Elysium Planitia has a cracked surface that, combined with its overall shape, gives the appearance of a giant loaf of bread in this image from NASA's Mars Odyssey spacecraft.
PIA04042:
"Bread Loaf" Mesa East of Phlegra Montes
Full Resolution:     TIFF (3.284 MB)     JPEG (690.6 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft covers part of Tithonium Chasma, which is part of the Valles Marineris system of canyons that stretch for thousands of kilometers.
PIA04043:
Tithonium Chasma
Full Resolution:     TIFF (3.003 MB)     JPEG (327.5 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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With a diameter of roughly 2,000 km (1,243 miles) and a depth of over 7 km (more than 4 miles), the Hellas Basin, shown in this image from NASA's Mars Odyssey spacecraft, is the largest impact feature on Mars.
PIA04044:
Floor of Hellas Basin
Full Resolution:     TIFF (3.552 MB)     JPEG (1.058 MB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft of the northern plains of Mars shows a surface texture of hundreds of small mounds and numerous small impact craters.
PIA04045:
Late Afternoon Sun
Full Resolution:     TIFF (1.498 MB)     JPEG (271.8 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey is of a region of Mars called Tempe Terra, which is located between the topographically high Tharsis Region and Acidalia Planitia, a large low albedo region of in the Martian northern hemisphere.
PIA04046:
Tempe Terra
Full Resolution:     TIFF (3.178 MB)     JPEG (745.8 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey shows a region called Terra Sirenum in Mars' southern hemisphere named for the Sea of the Sirens from Greek Mythology. This is not a sea, however, but a relatively dusty, high albedo region of Mars.
PIA04047:
Terra Sirenum
Full Resolution:     TIFF (3.613 MB)     JPEG (817.8 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey shows the cratered highlands of Terra Cimmeria. The image contains several long troughs of Sirenum Fossae running primarily from left to right. These features are parallel to semi-parallel fractures called graben.
PIA04048:
Terra Cimmeria Highlands
Full Resolution:     TIFF (3.122 MB)     JPEG (496.1 kB)
Add Image to Favorite List 2002-12-18 Mars 2001 Mars Odyssey
THEMIS
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This scene from NASA's Mars Odyssey spacecraft shows several interesting geologic features associated with impact craters on Mars.
PIA04049:
Impact Crater
Full Resolution:     TIFF (3.229 MB)     JPEG (638.3 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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Hills abound in this portion of Mars imaged by NASA's Mars Odyssey spacecraft and located in the Vastitas Borealis region of the high northern plains. These hills are part of Scandia Colles.
PIA04054:
Bumpy Terrain
Full Resolution:     TIFF (3.319 MB)     JPEG (783.5 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This NASA Mars Odyssey image was taken during winter in the southern hemisphere, meaning that the usually cloudy Hellas Basin is relatively free from clouds.
PIA04055:
Winter in Hellas Basin
Full Resolution:     TIFF (3.628 MB)     JPEG (975.1 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey covers a region in western Arabia Terra, which contains two interesting craters. The eastern floor of the largest crater seen in most of this image is bumpy and ridged in places and relatively smooth in regions.
PIA04056:
Western Arabia Terra
Full Resolution:     TIFF (3.34 MB)     JPEG (691.6 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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The Cydonia region on Mars, seen in this image from NASA's Mars Odyssey spacecraft, straddles the boundary between the bright, dusty, cratered highlands to the southeast and the dark, relatively dust-free, lowland plains to the west.
PIA04057:
Cydonia Landscape
Full Resolution:     TIFF (2.926 MB)     JPEG (540.3 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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Located in Arabia Terra, the crater shown in this image from NASA's Mars Odyssey spacecraft is known as Henry Crater. Like many other craters on Mars, the interior of Henry Crater is filled with a layered deposit.
PIA04058:
Henry Crater
Full Resolution:     TIFF (3.171 MB)     JPEG (618.5 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This NASA Mars Odyssey image of rounded hills and ridges in Arcadia Planitia shows a very intriguing geomorphic feature that may be attributed to the presence of an icy-rock mixture of material.
PIA04059:
Arcadia Planitia
Full Resolution:     TIFF (3.355 MB)     JPEG (652.3 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows the eastern portion of a region on Mars called Hesperia Planum. Immediately visible in the image is the dark barchan type dunes that are being blown against the southeast wall of the crater.
PIA04060:
Hesperia Planum
Full Resolution:     TIFF (2.982 MB)     JPEG (441.6 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This NASA Mars Odyssey image shows parts of the dissected and eroded remnants of an impact crater rim and volcanic material located north of Apollinaris Patera near the southern highlands - northern lowlands dichotomy on Mars.
PIA04061:
Appollinaris Patera
Full Resolution:     TIFF (1.411 MB)     JPEG (244.3 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey shows deposits in a crater located in Arabia Terra. Arabia is generally dust covered and dark streaks or dust avalanches are present in the crater walls.
PIA04062:
Arabia Terra
Full Resolution:     TIFF (3.218 MB)     JPEG (493.8 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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Like drippings from a candle, these lava flows on the flank of Olympus Mons volcano, seen in this image from NASA's Mars Odyssey spacecraft, demonstrate how it became the largest volcano in the solar system.
PIA04063:
Olympus Mons Flows
Full Resolution:     TIFF (3.498 MB)     JPEG (842.2 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey is located near the equator and the prime meridian of Mars in a region called Terra Meridiani. This is a unique area of Mars that displays layers of material that appear to be in the process of being stripped away.
PIA04064:
Terra Meridiani
Full Resolution:     TIFF (3.228 MB)     JPEG (625.1 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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This NASA Mars Odyssey image captures a portion of several lava flows in Daedalia Planum southwest of the Arsia Mons shield volcano. Textures characteristic of the variable surface roughness associated with different lava flows in this region are easily s
PIA04065:
Lava Flows of Daedalia Planum
Full Resolution:     TIFF (3.521 MB)     JPEG (855.6 kB)
Add Image to Favorite List 2002-12-19 Mars 2001 Mars Odyssey
THEMIS
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Reull Vallis, located in Mars' cratered southern hemisphere, flows for over 1,000 km (about 620 miles) toward the Hellas basin. This NASA Mars Odyssey image shows a portion of the channel with its enigmatic lineated floor deposits.
PIA04066:
Reull Vallis
Full Resolution:     TIFF (3.007 MB)     JPEG (543.8 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows fractures within the volcanic plains south of Elysium Mons.
PIA04067:
Cerberus Rupes
Full Resolution:     TIFF (3.187 MB)     JPEG (619.6 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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Coprates Chasma comprises the central portion of the Valles Marineris canyon system complex. This image from NASA's Mars Odyssey spacecraft of the southern wall of Coprates Chasma contains a landslide deposit with dunes over portions of slide.
PIA04068:
Coprates Chasma Landslide
Full Resolution:     TIFF (2.927 MB)     JPEG (436.8 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey shows part of the summit caldera of Pavonis Mons, the middle of three Tharsis volcanos that form a line southeast of Olympus Mons and northwest of Vallis Marineris.
PIA04069:
Pavonis Mons Summit Caldera
Full Resolution:     TIFF (3.344 MB)     JPEG (601.9 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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The style of erosion along the highlands-lowlands boundary of southern Elysium Planitia has produced a strange pattern of troughs that look like the skin of a reptile, as seen in this image from NASA's Mars Odyssey spacecraft.
PIA04070:
Scaly-skinned Mars
Full Resolution:     TIFF (3.419 MB)     JPEG (795.2 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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A large streamlined island in Kasei Vallis, as seen in this NASA Mars Odyssey image, shows evidence of scour on its surface, probably from floods that preceded the formation of the island.
PIA04071:
Kasei Vallisland
Full Resolution:     TIFF (2.656 MB)     JPEG (357.1 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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Ripple bedforms fill large fractures near the southern rim of Holden Crater in this image from NASA's Mars Odyssey spacecraft.
PIA04072:
Holden Crater
Full Resolution:     TIFF (2.797 MB)     JPEG (427.2 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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Dark streaks emanating from within impact crater walls show evidence for mass movement of materials in this image from NASA's Mars Odyssey spacecraft.
PIA04073:
Impact crater
Full Resolution:     TIFF (3.065 MB)     JPEG (526.7 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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These pit-chain features in this NASA Mars Odyssey image of south Noctis Labryinthus are oriented parallel to grabens in the area, suggesting that tensional stresses may have been responsible for their formation.
PIA04074:
Pit-chain in Noctis Labyrinthus
Full Resolution:     TIFF (2.266 MB)     JPEG (272.3 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey spacecraft, bizarre textures cover the surface of eastern Utopia Planitia, where there is a high probability that ground ice has played a role in the formation of this unusual landscape.
PIA04075:
Textures in Utopia Planitia
Full Resolution:     TIFF (3.3 MB)     JPEG (901.4 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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Impact craters in Hecates Tholus, as seen in this image from NASA's Mars Odyssey spacecraft, appear to be filled with sediment derived from erosion of the surrounding terrain.
PIA04076:
Hecates Tholus
Full Resolution:     TIFF (1.571 MB)     JPEG (311.2 kB)
Add Image to Favorite List 2002-12-20 Mars 2001 Mars Odyssey
THEMIS
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Streamlined channels near Lucus Planum can be seen in this image from NASA's Mars Odyssey spacecraft. These features were formed by catastrophic floods in the Martian past.
PIA04077:
Channels near Lucus Planum
Full Resolution:     TIFF (3.353 MB)     JPEG (578.5 kB)
Add Image to Favorite List 2003-01-24 Mars 2001 Mars Odyssey
THEMIS
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This pair of infrared images from NASA's Mars Odyssey spacecraft shows the so-called 'face on Mars' landform viewed during both the day and night.
PIA04100:
The So-called "Face on Mars" at Night
Full Resolution:     TIFF (454 kB)     JPEG (97.73 kB)
Add Image to Favorite List 2003-01-09 Mars 2001 Mars Odyssey
THEMIS
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Islands of older high-standing terrain rise above a sea of relatively young, platy lava flows between two of the largest volcanoes in the solar system in this image from NASA's Mars Odyssey spacecraft.
PIA04078:
A Sea of Lava
Full Resolution:     TIFF (3.327 MB)     JPEG (764.3 kB)
Add Image to Favorite List 2003-01-09 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows fractures within the volcanic plains south of Elysium Mons.
PIA04079:
Cerberus Rupes
Full Resolution:     TIFF (3.187 MB)     JPEG (619.5 kB)
Add Image to Favorite List 2003-01-09 Mars 2001 Mars Odyssey
THEMIS
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This area of Mars imaged by NASA's Mars Odyssey shows a wonderful example of relative geologic dating. Ancient lava flows and escarpments are mantled by younger impact ejecta, which was cut by a younger graben and resurfaced by smaller impact craters.
PIA04080:
Resurfaced Mars
Full Resolution:     TIFF (2.852 MB)     JPEG (461.8 kB)
Add Image to Favorite List 2003-01-09 Mars 2001 Mars Odyssey
THEMIS
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A variegated mottled texture located NW of the volcano Elysium Monsis is readily apparent in the terrain imaged here by NASA's Mars Odyssey spacecraft. The Hrad Vallis channel system can be seen sauntering across the bumpy landscape of Utopia Planitia.
PIA04081:
Complex and Perplexing Mars
Full Resolution:     TIFF (3.519 MB)     JPEG (847.8 kB)
Add Image to Favorite List 2003-01-09 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey, a mantling layer of sediment slumps off the edge of a mesa in Candor Chasma producing a ragged pattern of erosion that hints at the presence of a volatile component mixed in with the sediment.
PIA04082:
Candor Chasma Mesa
Full Resolution:     TIFF (3.453 MB)     JPEG (689.4 kB)
Add Image to Favorite List 2003-01-09 Mars 2001 Mars Odyssey
THEMIS
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Erosion of the interior layered deposits of Melas Chasma, part of the huge Valles Marineris canyon system, has produced cliffs with examples of spur and gulley morphology and exposures of finely layered sediments, as seen in this NASA Mars Odyssey image.
PIA04083:
Melas Chasma Deposits
Full Resolution:     TIFF (3.369 MB)     JPEG (619.6 kB)
Add Image to Favorite List 2003-01-11 Mars 2001 Mars Odyssey
THEMIS
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The sinuous channels and streamlined islands at the junction of Shalbatana and Simud Vallis, seen in this NASA Mars Odyssey image, present an erosional history of the catastrophic floods that scoured the Martian surface hundreds of millions of years ago.
PIA04084:
Shalbatana/Simud Vallis Junction
Full Resolution:     TIFF (2.939 MB)     JPEG (494.3 kB)
Add Image to Favorite List 2003-01-15 Mars 2001 Mars Odyssey
THEMIS
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The relatively flat floor and terrace walls of this impact crater imaged by NASA's Mars Odyssey spacecraft suggest the crater was partly infilled with sediment and subsequently eroded to its present day form.
PIA04086:
Impact Crater
Full Resolution:     TIFF (2.761 MB)     JPEG (414.7 kB)
Add Image to Favorite List 2003-01-15 Mars 2001 Mars Odyssey
THEMIS
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At first glance, this NASA Mars Odyssey image showing impact craters and linear ridges and troughs is typical of the southern highlands. However, upon closer examination migrating sand dunes are observed within the troughs.
PIA04087:
Southern Sand Dunes
Full Resolution:     TIFF (3.494 MB)     JPEG (857.6 kB)
Add Image to Favorite List 2003-01-17 Mars 2001 Mars Odyssey
THEMIS
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The muted terrain of northern Acidalia Planitia, as seen in this image from NASA's Mars Odyssey spacecraft, testifies to the fact that the region is heavily mantled with dust.
PIA04088:
Ridges swimming in a sea of dust
Full Resolution:     TIFF (3.059 MB)     JPEG (486.2 kB)
Add Image to Favorite List 2003-01-17 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey spacecraft, striations on the floor of this sinuous channel adjacent to Protonilus Mensae look like they result from the flow of lava or perhaps even glacial ice.
PIA04089:
Evidence of flow?
Full Resolution:     TIFF (3.46 MB)     JPEG (770.4 kB)
Add Image to Favorite List 2003-01-22 Mars 2001 Mars Odyssey
THEMIS
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The layered deposits in this Valles Marineris canyon imaged by NASA's Mars Odyssey spacecraft are heavily eroded by the wind into an impressive array of yardangs and swirling patterns of layers. The origin of the deposits remains a mystery.
PIA04090:
Layered Deposits in Western Candor Chasma
Full Resolution:     TIFF (3.308 MB)     JPEG (610 kB)
Add Image to Favorite List 2003-01-22 Mars 2001 Mars Odyssey
THEMIS
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The impact crater in this NASA Mars Odyssey image is a model illustration of the effects of erosion on Mars. The degraded crater rim and several landslides observed in crater walls are evidence of the mass wasting of materials.
PIA04091:
Erosion Effects
Full Resolution:     TIFF (3.203 MB)     JPEG (597 kB)
Add Image to Favorite List 2003-01-24 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows crater wall dust avalanches in southern Arabia Terra.
PIA04092:
Dust Avalanches
Full Resolution:     TIFF (2.777 MB)     JPEG (325.6 kB)
Add Image to Favorite List 2003-01-24 Mars 2001 Mars Odyssey
THEMIS
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The bizarre patterns on the floor of this crater in Nilosyrtis Mensae imaged by NASA's Mars Odyssey defy an easy explanation. It is possible that some form of periglacial process combined with the vaporization of ground ice to form these patterns.
PIA04093:
Concentric Crater Fill
Full Resolution:     TIFF (3.028 MB)     JPEG (436.7 kB)
Add Image to Favorite List 2003-01-30 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey, the late afternoon sun casts a shadow over a rim of Huygens Crater that's 700 meters (nearly 2,300 feet) high.
PIA04096:
Crater Rim
Full Resolution:     TIFF (2.968 MB)     JPEG (361.7 kB)
Add Image to Favorite List 2003-01-30 Mars 2001 Mars Odyssey
THEMIS
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The floors of these craters imaged by NASA's Mars Odyssey contain very interesting and enigmatic materials that may hold shallow subsurface ground ice with varying amounts of a sediment covering (mantle).
PIA04097:
Nilosyrtis Mensae
Full Resolution:     TIFF (3.301 MB)     JPEG (551.7 kB)
Add Image to Favorite List 2003-02-03 Mars 2001 Mars Odyssey
THEMIS
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A broad channel in the Deuteronilus Mensae region, shown in this NASA Mars Odyssey image, displays the strange landforms common to the northern mid-latitudes where ground ice likely plays a role in their formation.
PIA04098:
Mamers Valles
Full Resolution:     TIFF (3.06 MB)     JPEG (481.7 kB)
Add Image to Favorite List 2003-02-03 Mars 2001 Mars Odyssey
THEMIS
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The large sand sheets and dunes observed in this image from NASA's Mars Odyssey are located near the north pole of Mars. Changes in surface albedo across the image are likely due to variable thicknesses of dark sand that covers lighter surfaces.
PIA04099:
Chasma Boreal Dunes
Full Resolution:     TIFF (2.176 MB)     JPEG (253.8 kB)
Add Image to Favorite List 2003-02-07 Mars 2001 Mars Odyssey
THEMIS
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In this NASA Mars Odyssey image of eastern Arabia Terra, remnants of a once vast layered terrain are evident as isolated buttes, mesas, and deeply-filled craters.
PIA04400:
Remnants of Lost Geology
Full Resolution:     TIFF (2.892 MB)     JPEG (395.3 kB)
Add Image to Favorite List 2003-02-07 Mars 2001 Mars Odyssey
THEMIS
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The dust devil streaks observed in this NASA Mars Odyssey image of the Martian northern plains trend over hills, mounds and valleys, giving hints to the dynamic nature in which these streaks are formed.
PIA04401:
Dust Devil Streaks
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Add Image to Favorite List 2003-02-10 Mars 2001 Mars Odyssey
THEMIS
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Eroded, or 'etched' terrain dominates the field of view of this image from NASA's Mars Odyssey spacecraft, acquired over eastern Terra Meridiani. At the bottom of many craters and in other areas, dunes are present.
PIA04402:
Etched Terrain in Terra Meridiani
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Add Image to Favorite List 2003-02-10 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows an impact crater with a rampart ejecta blanket in Arabia Terra.
PIA04403:
Arabia Terra
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Add Image to Favorite List 2003-02-12 Mars 2001 Mars Odyssey
THEMIS
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Accumulations of thick dust give way down slopes, crater walls, and other steep terrain in this image from NASA's Mars Odyssey, leaving the dark streaks that are common in the dusty region of Arabia Terra.
PIA04404:
Arabia Terra Streaks
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Add Image to Favorite List 2003-02-12 Mars 2001 Mars Odyssey
THEMIS
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In this NASA Mars Odyssey image of western Acidalia, two craters of similar size dramatically display the effects of geologic activity. The younger one on the left has been left relatively well preserved.
PIA04405:
A Tale of Two Craters
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Add Image to Favorite List 2003-02-14 Mars 2001 Mars Odyssey
THEMIS
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Heavy water ice clouds almost completely obscure the surface in Vastitas Borealis, as seen in this image from NASA's Mars Odyssey spacecraft.
PIA04406:
Ice Clouds
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Add Image to Favorite List 2003-02-14 Mars 2001 Mars Odyssey
THEMIS
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This somewhat cloudy image from NASA's Mars Odyssey spacecraft shows a stunning example of layered deposits in Terby crater, just north of the Hellas impact basin.
PIA04407:
Layered Deposits in Terby Crater
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Add Image to Favorite List 2003-02-18 Mars 2001 Mars Odyssey
THEMIS
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The impact crater observed in this NASA Mars Odyssey image taken in Terra Cimmeria suggests sediments have filled the crater due to the flat and smooth nature of the floor compared to rougher surfaces at higher elevations.
PIA04410:
Crater Wall and Floor
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Add Image to Favorite List 2003-02-20 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows Granicus Vallis, which is located northwest of the Elysium volcanic complex and may owe its origin to the interaction of volcanic heating and subsurface ground ice.
PIA04411:
Granicus Vallis
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Add Image to Favorite List 2003-02-20 Mars 2001 Mars Odyssey
THEMIS
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Freedom crater, located in Acidalia Planitia, exhibits a concentric ring pattern in its interior as seen in this image from NASA's Mars Odyssey spacecraft, suggesting that there has been some movement of these materials towards the center of the crater.
PIA04412:
Freedom Crater
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Add Image to Favorite List 2003-02-26 Mars 2001 Mars Odyssey
THEMIS
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The sinuous channel in this NASA Mars Odyssey image begins at the edge of Cerulli Crater in northern Arabia and snakes its way across 1,000 km (621 miles) of cratered highlands before reaching Deuteronilus Mensae at the boundary of the northern lowlands.
PIA04428:
Mamers Vallis
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Add Image to Favorite List 2003-02-26 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows the easternmost end of Valles Marineris, where a rugged, jumbled terrain known as chaos displays a stratigraphy that could be described as precarious.
PIA04429:
Arsinoes Chaos
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Add Image to Favorite List 2003-02-26 Mars 2001 Mars Odyssey
THEMIS
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The top half of this NASA Mars Odyssey image shows interior layered deposits that have long been recognized in Valles Marineris. Upon close examination, the layers appear to be eroding differently, indicating different levels of competency.
PIA04430:
Valles Marineris - with 3-D
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Add Image to Favorite List 2003-02-26 Mars 2001 Mars Odyssey
THEMIS
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The long sharp-crested features observed in this image from NASA's Mars Odyssey spacecraft are named yardangs. Yardangs form by wind erosion and typically lie in the direction of the dominant wind.
PIA04431:
Lycus Sulci
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Add Image to Favorite List 2003-03-06 Mars 2001 Mars Odyssey
THEMIS
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This image from NASA's Mars Odyssey spacecraft shows grooves within channels of Kasei Valles that can be interpreted as evidence for fluvial activity.
PIA04434:
Kasei Vallis
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Add Image to Favorite List 2003-03-06 Mars 2001 Mars Odyssey
THEMIS
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The wind-sculpted yardangs in this scene from NASA's Mars Odyssey spacecraft are part of the Medusae Fossae Formation, a regionally extensive geologic unit that probably was produced from the accumulation of volcanic ash.
PIA04435:
Memnonia Sulci
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Add Image to Favorite List 2003-03-06 Mars 2001 Mars Odyssey
THEMIS
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The large crater at the top of this image from NASA's Mars Odyssey spacecraft has several other craters inside of it. Most noticeable are the craters that form a 'chain' on the southern wall of the large crater.
PIA04436:
Crater Chains
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Add Image to Favorite List 2003-03-06 Mars 2001 Mars Odyssey
THEMIS
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With its rim eroded off by catastrophic floods in Tiu Vallis and its strangely angular shape, this 12 km (about 7.5 mile) diameter crater imaged by NASA's Mars Odyssey spacecraft looks vaguely like a stop sign.
PIA04437:
Stop Sign Crater
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Add Image to Favorite List 2003-03-07 Mars 2001 Mars Odyssey
THEMIS
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An unusual mix of textures is featured in this image from NASA's Mars Odyssey spacecraft of a surface east of the Phlegra Montes. Scabby mounds, commonly occurring around degraded craters, mix with a more muted, knobby terrain.
PIA04438:
Textures in Arcadia Planitia
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Add Image to Favorite List 2003-03-07 Mars 2001 Mars Odyssey
THEMIS
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Hrad Vallis, seen in this NASA Mars Odyssey image, appears to be affecting the local wind patterns. The texture of the terrain just around the valleys is markedly different from that its surroundings.
PIA04439:
Hrad Vallis
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Add Image to Favorite List 2003-03-14 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey spacecraft, numerous lava flows and fossae (cracks) are visible in a region of Mars located southeast of Olympus Mons. There is also a hint that water may have possibly flowed in the region.
PIA04440:
Gordii Fossae
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Add Image to Favorite List 2003-03-14 Mars 2001 Mars Odyssey
THEMIS
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The smooth plains of Elysium embay the blocky broken up highlands of Aeolis in this image from NASA's Mars Odyssey spacecraft. The plains have been interpreted by researchers to be possibly mudflows or lava flows.
PIA04441:
Highland/Lowland contact
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Add Image to Favorite List 2003-03-14 Mars 2001 Mars Odyssey
THEMIS
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This NASA Mars Odyssey image shows 'Lycus Sulci,' a region of ridges and hills located north-northwest of the volcano Olympus Mons. Several dust avalanches on the flanks of the roughly textured surfaces suggest a thick coating of fine-grained materials.
PIA04442:
Lycus Sulci
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Add Image to Favorite List 2003-03-19 Mars 2001 Mars Odyssey
THEMIS
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Dunes in the Vastitas Borealis region of Mars are seen in this image from NASA's Mars Odyssey spacecraft. These sand seas migrate around the north polar cap following the strong polar vortex winds.
PIA04443:
Polar Dunes
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Add Image to Favorite List 2003-03-19 Mars 2001 Mars Odyssey
THEMIS
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Just north of the hematite deposit in Meridiani Planum, the remnants of a formerly extensive layer of material remain as isolated knobs and buttes in this image from NASA's Mars Odyssey spacecraft.
PIA04444:
Martian Braille
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Add Image to Favorite List 2003-03-19 Mars 2001 Mars Odyssey
THEMIS
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Pavonis Mons is the middle of the three large volcanoes on the Tharsis bulge. This image from NASA's Mars Odyssey spacecraft covers the edge of the volcano's caldera. Outside of the caldera, numerous lava flows and impact craters can be seen.
PIA04445:
Pavonis Mons Caldera
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Add Image to Favorite List 2003-03-22 Mars 2001 Mars Odyssey
THEMIS
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The fluidized impact crater ejecta and flat crater floors observed in this image from NASA's Mars Odyssey spacecraft suggest near-surface volatiles once played an important role in modifying the Martian surface.
PIA04446:
Impact Craters
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Add Image to Favorite List 2003-03-22 Mars 2001 Mars Odyssey
THEMIS
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The floor of the crater in this NASA Mars Odyssey image displays interesting textures and it appears to have been flooded by some type of material. It is unclear if this material was fluvially emplaced mud (hyperconcentrated flows) or lava.
PIA04447:
Flooded Crater in Terra Sirenum
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Add Image to Favorite List 2003-03-22 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey, eroded mesas and secondary craters dot the landscape in an area of Cydonia Mensae. The single oval-shaped crater displays a 'butterfly' ejecta pattern, indicating that the crater formed from a low-angle impact.
PIA04448:
Cydonia Craters
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Add Image to Favorite List 2003-03-27 Mars 2001 Mars Odyssey
THEMIS
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The eroded, layered deposit in this NASA Mars Odyssey image of Gale Crater is a mound of material rising 3 km (about 2 miles) above the crater floor. It has been sculpted by wind and possibly water to produce the dramatic landforms seen today.
PIA04449:
Gale Crater Mound
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Add Image to Favorite List 2003-03-27 Mars 2001 Mars Odyssey
THEMIS
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This is an image from NASA's Mars Odyssey spacecraft of an area within Acidalia Planitia that contains patterned ground (near the top of the image). This type of surface is likely related to subsurface ice.
PIA04450:
Acidalia Planitia
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Add Image to Favorite List 2003-04-02 Mars 2001 Mars Odyssey
THEMIS
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In this image from NASA's Mars Odyssey spacecraft showing a location about 1,000 km (620 miles) west of the massive Elysium volcanic complex, a system of branching troughs shows a continuum of features that provides clues to its origin.
PIA04451:
Hebrus Valles
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