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This image from NASA's Mars Odyssey spacecraft shows fractures within the volcanic plains south of Elysium Mons.
This image from NASA's Mars Odyssey spacecraft shows fractures within the volcanic plains south of Elysium Mons.

Cerberus Rupes

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.
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.

Lava Flows around Olympus Mons

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.
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.

Bumpy Terrain

This image is a mosaic of day and night infrared images of Melas Chasma taken by NASA's Mars Odyssey spacecraft. The daytime temperatures range from approximately -35 degrees Celsius (-31 degrees Fahrenheit) to -5 degrees Celsius (23 degrees Fahrenheit).
This image is a mosaic of day and night infrared images of Melas Chasma taken by NASA's Mars Odyssey spacecraft. The daytime temperatures range from approximately -35 degrees Celsius (-31 degrees Fahrenheit) to -5 degrees Celsius (23 degrees Fahrenheit).

Long Range View of Melas Chasma

The scoured grooves in the catastrophic outflow channels shown in this image from NASA's Mars Odyssey spacecraft formed hundreds of million of years ago and have the appearance of wood grain. They now host dune-like ripples of windblown material.
The scoured grooves in the catastrophic outflow channels shown in this image from NASA's Mars Odyssey spacecraft formed hundreds of million of years ago and have the appearance of wood grain. They now host dune-like ripples of windblown material.

Kasei Vallis

This image from NASA's Mars Odyssey is located in Meroe Patera, which is a small region within Syrtis Major Planitia. Syrtis Major is a low-relief shield volcano whose lava flows make up a plateau more than 1,000 km (about 620 miles) across.
This image from NASA's Mars Odyssey is located in Meroe Patera, which is a small region within Syrtis Major Planitia. Syrtis Major is a low-relief shield volcano whose lava flows make up a plateau more than 1,000 km (about 620 miles) across.

Meroe Patera

The jumbled, chaotic terrain in this NASA Mars Odyssey image may represent a source region for the Reull Vallis, one of the larger channel systems in the southern hemisphere of Mars.
The jumbled, chaotic terrain in this NASA Mars Odyssey image may represent a source region for the Reull Vallis, one of the larger channel systems in the southern hemisphere of Mars.

Reull Vallis Source Region

This image to the east of Tharsis Tholus from NASA's Mars Odyssey spacecraft shows one of many vast fields of lava flows produced by the great Tharsis volcanoes.
This image to the east of Tharsis Tholus from NASA's Mars Odyssey spacecraft shows one of many vast fields of lava flows produced by the great Tharsis volcanoes.

Lava Flows in Eastern Tharsis

This image of Tharsis Rise from NASA's Mars Odyssey shows a series of linear features called graben, which are associated with crustal extension resulting in up and down blocks of crust that run perpendicular to the direction of the extension.
This image of Tharsis Rise from NASA's Mars Odyssey shows a series of linear features called graben, which are associated with crustal extension resulting in up and down blocks of crust that run perpendicular to the direction of the extension.

Tharsis Rise Graben

The rugged, arcuate rim of the 90 km crater Reuyl dominates this NASA Mars Odyssey image. Reuyl crater is at the southern edge of a region known to be blanketed in thick dust based on its high albedo (brightness) and low thermal inertia values.
The rugged, arcuate rim of the 90 km crater Reuyl dominates this NASA Mars Odyssey image. Reuyl crater is at the southern edge of a region known to be blanketed in thick dust based on its high albedo (brightness) and low thermal inertia values.

Reuyl Crater Dust Avalanches

Observations by NASA's Mars Odyssey spacecraft show views of the polar regions of Mars in thermal neutrons (top) and epithermal neutrons (bottom). In these maps, deep blue indicates a low amount of neutrons and red indicates a high amount.
Observations by NASA's Mars Odyssey spacecraft show views of the polar regions of Mars in thermal neutrons (top) and epithermal neutrons (bottom). In these maps, deep blue indicates a low amount of neutrons and red indicates a high amount.

Polar Maps of Thermal and Epithermal Neutrons

The 'Mini Matterhorn' is a 3/4 meter rock immediately east-southeast of NASA's Mars Pathfinder lander. 3D glasses are necessary to identify surface detail.
The 'Mini Matterhorn' is a 3/4 meter rock immediately east-southeast of NASA's Mars Pathfinder lander. 3D glasses are necessary to identify surface detail.

Super Resolution Anaglyph of Mini-Matterhorn

NASA's Mars Reconnaissance Orbiter has detected widespread deposits of glacial ice in the mid-latitudes of Mars. This map of a region known as Deuteronilus Mensae, in the northern hemisphere, shows locations of the detected ice deposits in blue.
NASA's Mars Reconnaissance Orbiter has detected widespread deposits of glacial ice in the mid-latitudes of Mars. This map of a region known as Deuteronilus Mensae, in the northern hemisphere, shows locations of the detected ice deposits in blue.

Glacial Ice Deposits in Mid-Latitudes of Mars

This view of the American flag medallion on NASA's Mars rover Curiosity was taken by the rover's MAHLI camera during the 44th Martian sol on Sept. 19, 2012. The flag is one of four 'mobility logos' placed on the rover's mobility rocker arms.
This view of the American flag medallion on NASA's Mars rover Curiosity was taken by the rover's MAHLI camera during the 44th Martian sol on Sept. 19, 2012. The flag is one of four 'mobility logos' placed on the rover's mobility rocker arms.

Curiosity's Stars and Stripes

A sea of dark dunes, sculpted by the wind into long lines, surrounds the northern polar cap covering an area as big as Texas in this false-color image from NASA's Mars Odyssey, the longest-working Mars spacecraft in history.
A sea of dark dunes, sculpted by the wind into long lines, surrounds the northern polar cap covering an area as big as Texas in this false-color image from NASA's Mars Odyssey, the longest-working Mars spacecraft in history.

Mars Odyssey All Stars: Polar Dunes

As crater size increases, craters become more complex. This moderate size crater contains a central peak, created by rebound of molten material just following the impact. This image was captured by NASA's Mars Odyssey on Sept. 8, 2010.
As crater size increases, craters become more complex. This moderate size crater contains a central peak, created by rebound of molten material just following the impact. This image was captured by NASA's Mars Odyssey on Sept. 8, 2010.

Central Peak Crater

This wind eroded crater is located between Eumenides and Gordii Dorsa. The ejecta of the crater is more resistant to the wind than the surrounding materials in this image from NASA's Mars Odyssey.
This wind eroded crater is located between Eumenides and Gordii Dorsa. The ejecta of the crater is more resistant to the wind than the surrounding materials in this image from NASA's Mars Odyssey.

Wind Effects

This stereo mosaic of images from NASA's Mars rover Curiosity shows the terrain surrounding the rover's position on the 524th Martian day. You need 3-D glasses to view this image.
This stereo mosaic of images from NASA's Mars rover Curiosity shows the terrain surrounding the rover's position on the 524th Martian day. You need 3-D glasses to view this image.

Full-Circle Vista During Curiosity's Approach to 'Dingo Gap' (Stereo)

This image from NASA's Mars Odyssey shows part of an unnamed channel in Terra Cimmeria.
This image from NASA's Mars Odyssey shows part of an unnamed channel in Terra Cimmeria.

Channel in Terra Cimmeria

The largest crater associated with a March 2012 impact on Mars has many smaller craters around it, revealed in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.
The largest crater associated with a March 2012 impact on Mars has many smaller craters around it, revealed in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.

Large, Fresh Crater Surrounded by Smaller Craters

This set of images from NASA's Curiosity rover shows a patch of rock before and after it was cleaned by Curiosity's Dust Removal Tool (DRT).
This set of images from NASA's Curiosity rover shows a patch of rock before and after it was cleaned by Curiosity's Dust Removal Tool (DRT).

Before and After a Little Dusting

Small dunes are located on the floor of Darwin Crater as shown in this image from NASA's 2001 Mars Odyssey spacecraft.
Small dunes are located on the floor of Darwin Crater as shown in this image from NASA's 2001 Mars Odyssey spacecraft.

Darwin Crater Dunes

This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the dune field located on the floor of Arkhangelsky Crater.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the dune field located on the floor of Arkhangelsky Crater.

Arkhanglesky Crater Dunes

The development of the Mars rover Curiosity's capabilities for drilling into a rock on Mars required years of development work. Seen here are some of the rocks used in bit development testing and lifespan testing at JPL in 2007.
The development of the Mars rover Curiosity's capabilities for drilling into a rock on Mars required years of development work. Seen here are some of the rocks used in bit development testing and lifespan testing at JPL in 2007.

Preparation on Earth for Drilling on Mars

By high summer, the extensive dune fields of the north polar region are completely defrosted and the number and variety of dunes are readily visible. This image was captured by NASA's Mars Odyssey on August 31, 2010.
By high summer, the extensive dune fields of the north polar region are completely defrosted and the number and variety of dunes are readily visible. This image was captured by NASA's Mars Odyssey on August 31, 2010.

Polar Dunes

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