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This image from NASA's 2001 Mars Odyssey spacecraft shows lava flows in Daedalia Planum.
This image from NASA's 2001 Mars Odyssey spacecraft shows lava flows in Daedalia Planum.

Daedalia Planum

This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the extensive field of lava flows that make up Daedalia Planum.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the extensive field of lava flows that make up Daedalia Planum.

Daedalia Planum

This image from NASA's Mars Odyssey spacecraft shows the eastern part of Hydrae Chasma.
This image from NASA's Mars Odyssey spacecraft shows the eastern part of Hydrae Chasma.

Hydrae Chasma

The parallel ridges in this image captured by NASA's Mars Odyssey spacecraft are part of Arsia Sulci - a region west of Arsia Mons. How these features were formed is unknown.
The parallel ridges in this image captured by NASA's Mars Odyssey spacecraft are part of Arsia Sulci - a region west of Arsia Mons. How these features were formed is unknown.

Arsia Sulci

This graph compares a typical daily pattern of changing atmospheric pressure (blue) with the pattern during a regional dust storm hundreds of miles away (red). The data are by the Rover Environmental Monitoring Station (REMS) on NASA's Curiosity rover.
This graph compares a typical daily pattern of changing atmospheric pressure (blue) with the pattern during a regional dust storm hundreds of miles away (red). The data are by the Rover Environmental Monitoring Station (REMS) on NASA's Curiosity rover.

Atmospheric Pressure Patterns Before and During Dust Storm

Impact craters can have a variety of floor features. This image from NASA's Mars Odyssey is a central peak/pit combination crater in Terra Cimmeria.
Impact craters can have a variety of floor features. This image from NASA's Mars Odyssey is a central peak/pit combination crater in Terra Cimmeria.

Crater Centers

This image from NASA's Mars Odyssey caputured on July 23, 2010 off the northern flank of Arsia Mons shows collapse/vent features.
This image from NASA's Mars Odyssey caputured on July 23, 2010 off the northern flank of Arsia Mons shows collapse/vent features.

Arsia Mons

This observation from NASA's Mars Reconnaissance Orbiter shows sand dunes in late Northern spring on Mars, mixed with rock outcrops on the floor of a large crater.
This observation from NASA's Mars Reconnaissance Orbiter shows sand dunes in late Northern spring on Mars, mixed with rock outcrops on the floor of a large crater.

Squiggly Sand Dunes

This image from NASA's Mars Odyssey spacecraft is just slightly south of yesterday's, and shows how close the dunes are to the crater rim.
This image from NASA's Mars Odyssey spacecraft is just slightly south of yesterday's, and shows how close the dunes are to the crater rim.

Images of Gale #29

This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of Aram Chaos. There are several layers of material in this region.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of Aram Chaos. There are several layers of material in this region.

Aram Chaos

This mosaic shows the calibration target for the Chemistry and Camera (ChemCam) instrument on NASA's Curiosity rover, as seen by the ChemCam's remote micro-imager. The 10 images incorporated in this mosaic were taken on Aug. 15.
This mosaic shows the calibration target for the Chemistry and Camera (ChemCam) instrument on NASA's Curiosity rover, as seen by the ChemCam's remote micro-imager. The 10 images incorporated in this mosaic were taken on Aug. 15.

Checking out ChemCam's View

This image shows the calibration target for the Chemistry and Camera instrument on NASA's Curiosity rover before it was installed on the rover and readied for launch.
This image shows the calibration target for the Chemistry and Camera instrument on NASA's Curiosity rover before it was installed on the rover and readied for launch.

Pre-Launch Calibration Target for ChemCam

These windstreaks are located in northern Terra Tyrrhena. The wind was blowing from NE to SW to create the streaks in the lee of the craters. This image is from NASA's Mars Odyssey.
These windstreaks are located in northern Terra Tyrrhena. The wind was blowing from NE to SW to create the streaks in the lee of the craters. This image is from NASA's Mars Odyssey.

Windstreaks

The ejecta materials of this crater are more resistant to erosion than the surrounding materials. The wind has eroded pits and other features around the crater causing it to become a topographic high. This image is from NASA's Mars Odyssey.
The ejecta materials of this crater are more resistant to erosion than the surrounding materials. The wind has eroded pits and other features around the crater causing it to become a topographic high. This image is from NASA's Mars Odyssey.

Wind and Rock

Individual sand dunes are visible in this image of Nili Patera taken by NASA's Mars Odyssey.
Individual sand dunes are visible in this image of Nili Patera taken by NASA's Mars Odyssey.

Nili Patera Dunes

What appear to be channels in this image from NASA's Mars Odyssey is the dissection of the higher elevations on the margin of Chryse Chaos. Continued dissection eventually creates the block/mesa forms termed chaos on Mars.
What appear to be channels in this image from NASA's Mars Odyssey is the dissection of the higher elevations on the margin of Chryse Chaos. Continued dissection eventually creates the block/mesa forms termed chaos on Mars.

Chaos Margin

The dune field in this image taken by NASA's 2001 Mars Odyssey is located on the floor of an unnamed crater east of Proctor Crater.
The dune field in this image taken by NASA's 2001 Mars Odyssey is located on the floor of an unnamed crater east of Proctor Crater.

Dunes east of Proctor Crater

Diagnostic tests were run on the right-rear wheel and right-front wheel on NASA's Spirit. The right-rear wheel continued to show no motion in the latest tests and exhibited very high resistance in the motor winding.
Diagnostic tests were run on the right-rear wheel and right-front wheel on NASA's Spirit. The right-rear wheel continued to show no motion in the latest tests and exhibited very high resistance in the motor winding.

Slight Movement by Spirit's Right-Front Wheel, Sol 2113

The Context Camera aboard NASA's Mars Reconnaissance Orbiter discovers new dark spots on Mars that, upon closer examination, turn out to be brand new impact craters.
The Context Camera aboard NASA's Mars Reconnaissance Orbiter discovers new dark spots on Mars that, upon closer examination, turn out to be brand new impact craters.

New Impact Craters on Mars

The floor of Coprates Chasma contains many different geologic landforms. This image, taken by NASA's 2001 Mars Odyssey spacecraft, shows the effects of wind and landslides.
The floor of Coprates Chasma contains many different geologic landforms. This image, taken by NASA's 2001 Mars Odyssey spacecraft, shows the effects of wind and landslides.

Coprates Chasma

Opportunity's Surroundings After Sol 2363 Drive (Polar)

This image from NASA's Curiosity rover shows the inlet covers for the Sample Analysis at Mars instrument as the rover continues to check out its instruments in the first phase after landing.
This image from NASA's Curiosity rover shows the inlet covers for the Sample Analysis at Mars instrument as the rover continues to check out its instruments in the first phase after landing.

Opening and Closing SAM

This image as seen by NASA's 2001 Mars Odyssey spacecraft shows the layering of the ice at the north pole.
This image as seen by NASA's 2001 Mars Odyssey spacecraft shows the layering of the ice at the north pole.

Polar Layers

This plot segregates various minerals examined by NASA's Mars Exploration Rover Opportunity according to their different compositions; for example, those with more iron and magnesium oxides are located in the lower right corner.
This plot segregates various minerals examined by NASA's Mars Exploration Rover Opportunity according to their different compositions; for example, those with more iron and magnesium oxides are located in the lower right corner.

Mineral Plot from 'Esperance' Target

The hole that NASA's Curiosity Mars rover drilled into target rock 'John Klein' provided a view into the interior of the rock, as well as obtaining a sample of powdered material from the rock.
The hole that NASA's Curiosity Mars rover drilled into target rock 'John Klein' provided a view into the interior of the rock, as well as obtaining a sample of powdered material from the rock.

View into 'John Klein' Drill Hole in Martian Mudstone

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