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The dunes in this image captured by NASA's 2001 Mars Odyssey spacecraft are located on the floor of Lyot Crater.
The dunes in this image captured by NASA's 2001 Mars Odyssey spacecraft are located on the floor of Lyot Crater.

Lyot Crater Dunes

The rock-studded terrain NASA's Mars rover Curiosity has traversed since October 2013 appears to have accelerated the pace of wear and tear on the rover's wheels. Future drives may be charted to cross smoother ground where available.
The rock-studded terrain NASA's Mars rover Curiosity has traversed since October 2013 appears to have accelerated the pace of wear and tear on the rover's wheels. Future drives may be charted to cross smoother ground where available.

Rocky Mars Ground Where Curiosity Has Been Driving

This observance from NASA's Mars Reconnaissance Orbiter shows a formation of large outflow channels on Mars' Aureum Chaos.
This observance from NASA's Mars Reconnaissance Orbiter shows a formation of large outflow channels on Mars' Aureum Chaos.

Light-Toned Outcrop in Aureum Chaos

This 3-D view from the navigation camera on NASA's Mars Exploration Rover Opportunity shows a vista across Endeavour Crater, with the rover's own shadow in the foreground.
This 3-D view from the navigation camera on NASA's Mars Exploration Rover Opportunity shows a vista across Endeavour Crater, with the rover's own shadow in the foreground.

Opportunity Overlooking Endeavour Crater, Stereo View

The small, dark dunes in this image captured by NASA's 2001 Mars Odyssey spacecraft are located on the northern plains.
The small, dark dunes in this image captured by NASA's 2001 Mars Odyssey spacecraft are located on the northern plains.

Dark Dunes

NASA's Curiosity Mars rover used the Mars Hand Lens Imager (MAHLI) camera on its arm to catch the first images of sparks produced by the rover's laser being shot at a rock on Mars. The left image is from before the laser zapped this rock, called 'Nova'.
NASA's Curiosity Mars rover used the Mars Hand Lens Imager (MAHLI) camera on its arm to catch the first images of sparks produced by the rover's laser being shot at a rock on Mars. The left image is from before the laser zapped this rock, called 'Nova'.

First Imaging of Laser-Induced Spark on Mars

This image from NASA's 2001 Mars Odyssey spacecraft shows part of the summit caldera on Arsia Mons.
This image from NASA's 2001 Mars Odyssey spacecraft shows part of the summit caldera on Arsia Mons.

Arsia Mons Caldera Rim

This close-up view shows NASA's Curiosity rover on the surface of Mars. The image was captured by the NASA's Mars Reconnaissance Orbiter about 24 hours after the rover made its grand appearance on Mars.
This close-up view shows NASA's Curiosity rover on the surface of Mars. The image was captured by the NASA's Mars Reconnaissance Orbiter about 24 hours after the rover made its grand appearance on Mars.

Curiosity Spotted!

The area where NASA's Curiosity rover will land on Aug. 5 PDT (Aug. 6 EDT) has a geological diversity that scientists are eager to investigate, as seen in this false-color map based on data from NASA's Mars Odyssey orbiter.
The area where NASA's Curiosity rover will land on Aug. 5 PDT (Aug. 6 EDT) has a geological diversity that scientists are eager to investigate, as seen in this false-color map based on data from NASA's Mars Odyssey orbiter.

Geological Diversity at Curiosity's Landing Site

The Avernus region contains several different surface features. These include tectonic fractures, ridges, hills, and regions of chaos within isolated depressions termed cavi. This image was captured by NASA's 2001 Mars Odyssey spacecraft.
The Avernus region contains several different surface features. These include tectonic fractures, ridges, hills, and regions of chaos within isolated depressions termed cavi. This image was captured by NASA's 2001 Mars Odyssey spacecraft.

Avernus Topography

This image from the Navigation Camera on NASA's Curiosity Mars rover shows a sandstone slab on which the rover team has selected a target, 'Windjana,' for close-up examination.
This image from the Navigation Camera on NASA's Curiosity Mars rover shows a sandstone slab on which the rover team has selected a target, 'Windjana,' for close-up examination.

Curiosity Mars Rover Beside Sandstone Target 'Windjana'

NASA's Opportunity used its Pancam to record this view of the rise in the foreground, called 'Nobbys Head.' This view is centered toward the south-southeast, with Opportunity's next destination, 'Solander Point,' toward the right edge of the view.
NASA's Opportunity used its Pancam to record this view of the rise in the foreground, called 'Nobbys Head.' This view is centered toward the south-southeast, with Opportunity's next destination, 'Solander Point,' toward the right edge of the view.

'Nobbys Head' on Opportunity's Southward Route

This is the first dust devil that NASA's rover Opportunity has observed in the rover's six and a half years on Mars. This image has been carefully calibrated and the contrast stretched to make the dust devil easier to see against the Martian sky.
This is the first dust devil that NASA's rover Opportunity has observed in the rover's six and a half years on Mars. This image has been carefully calibrated and the contrast stretched to make the dust devil easier to see against the Martian sky.

First Dust Devil Seen by Opportunity

This stereo view from NASA's Mars Exploration Rover Opportunity looks upward at 'Knudsen Ridge' on the southern edge of 'Marathon Valley' from inside the valley. You need 3-D glasses to view this image.
This stereo view from NASA's Mars Exploration Rover Opportunity looks upward at 'Knudsen Ridge' on the southern edge of 'Marathon Valley' from inside the valley. You need 3-D glasses to view this image.

Steep 'Knudsen Ridge' Along 'Marathon Valley' on Mars (Stereo)

This mosaic view from the Mast Camera (Mastcam) on NASA's Mars rover Curiosity shows textural characteristics and shapes of an outcrop called 'Point Lake.' The outcrop is about 20 inches (half a meter) high and pockmarked with holes.
This mosaic view from the Mast Camera (Mastcam) on NASA's Mars rover Curiosity shows textural characteristics and shapes of an outcrop called 'Point Lake.' The outcrop is about 20 inches (half a meter) high and pockmarked with holes.

Puzzling 'Point Lake' Outcrop Revisited

NASA's Mars Exploration Rover Opportunity captured this view of a portion of Endeavour crater's rim after a drive on Aug. 4, 2011 to reach 'Spirit Point,' the chosen arrival site.
NASA's Mars Exploration Rover Opportunity captured this view of a portion of Endeavour crater's rim after a drive on Aug. 4, 2011 to reach 'Spirit Point,' the chosen arrival site.

Opportunity's View Approaching Rim of Endeavour

NASA's Mars Reconnaissance Orbiter shows the surface outside this large crater is relatively dark, while the interior wall of the crater exposes lighter, layered bedrock of diverse colors.
NASA's Mars Reconnaissance Orbiter shows the surface outside this large crater is relatively dark, while the interior wall of the crater exposes lighter, layered bedrock of diverse colors.

Layers Exposed in Crater Near Mawrth Vallis

This image from NASA's Mars Reconnaissance Orbiter shows the west-facing side of an impact crater in the mid-latitudes of Mars' northern hemisphere. This crater has gullies along its walls that are composed of alcoves, channels and debris aprons.
This image from NASA's Mars Reconnaissance Orbiter shows the west-facing side of an impact crater in the mid-latitudes of Mars' northern hemisphere. This crater has gullies along its walls that are composed of alcoves, channels and debris aprons.

Northern Hemisphere Gullies on West-Facing Crater Slope, Mars

This observation from NASA's Mars Reconnaissance Orbiter shows fractured mounds on the southern edge of Elysium Planitia. The fractures that crisscross their surfaces are probably composed of solidified lava.
This observation from NASA's Mars Reconnaissance Orbiter shows fractured mounds on the southern edge of Elysium Planitia. The fractures that crisscross their surfaces are probably composed of solidified lava.

Fractured Mounds in Elysium Planitia

This view from the microscopic imager on NASA's Mars Exploration Rover Opportunity shows a type of light-colored, rough-textured spherules scientists call 'popcorn' in contrast to the darker, smoother spherules called 'blueberries.'
This view from the microscopic imager on NASA's Mars Exploration Rover Opportunity shows a type of light-colored, rough-textured spherules scientists call 'popcorn' in contrast to the darker, smoother spherules called 'blueberries.'

'Blueberries' Inside 'Popcorn'

This observance from NASA's Mars Reconnaissance Orbiter covers a pit in the lower West flank of Arsia Mons, one of the four giant volcanos of the Tharsis region. Many layers are exposed in the pit, probably marking individual lava flows.
This observance from NASA's Mars Reconnaissance Orbiter covers a pit in the lower West flank of Arsia Mons, one of the four giant volcanos of the Tharsis region. Many layers are exposed in the pit, probably marking individual lava flows.

Layers in Arsia Mons Volcano

This set of images shows the results from the rock abrasion tool from NASA's Mars Exploration Rover Opportunity (left) and the drill from NASA's Curiosity rover (right).
This set of images shows the results from the rock abrasion tool from NASA's Mars Exploration Rover Opportunity (left) and the drill from NASA's Curiosity rover (right).

Studying Habitability in Ancient Martian Environments

After a rocket-powered descent stage, also known as the sky crane, delivered NASA's Curiosity rover to Mars on Aug. 5 PDT (Aug. 6 EDT), 2012, it flew away and fell to the surface.
After a rocket-powered descent stage, also known as the sky crane, delivered NASA's Curiosity rover to Mars on Aug. 5 PDT (Aug. 6 EDT), 2012, it flew away and fell to the surface.

Dissecting the Scene of Sky Crane Crash

Mars scientists have several important hypotheses about how these minerals may reflect changes in the amount of water on the surface of Mars. The Mars Science Laboratory rover, Curiosity, will use its full suite of instruments to study these minerals.
Mars scientists have several important hypotheses about how these minerals may reflect changes in the amount of water on the surface of Mars. The Mars Science Laboratory rover, Curiosity, will use its full suite of instruments to study these minerals.

Rock Layers in Lower Mound in Gale Crater

The gold line on this image shows NASA's Opportunity's route from the landing site, in upper left, to the area it is investigating on the western rim of Endeavour Crater as of the rover's 10th anniversary on Mars, in Earth years.
The gold line on this image shows NASA's Opportunity's route from the landing site, in upper left, to the area it is investigating on the western rim of Endeavour Crater as of the rover's 10th anniversary on Mars, in Earth years.

Opportunity's First Decade of Driving on Mars

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