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The lava flows and depressions in this image from NASA's 2001 Mars Odyssey spacecraft are located south of Alba Mons.
The lava flows and depressions in this image from NASA's 2001 Mars Odyssey spacecraft are located south of Alba Mons.

Tharsis Volcanics

Numerous unnamed channels seen in this image captured by NASA's 2001 Mars Odyssey spacecraft are located on the eastern margin of Tempe Terra.
Numerous unnamed channels seen in this image captured by NASA's 2001 Mars Odyssey spacecraft are located on the eastern margin of Tempe Terra.

Tempe Terra

The small channel and lava flows in this image NASA's 2001 Mars Odyssey spacecraft are located northeast of Olympus Mons.
The small channel and lava flows in this image NASA's 2001 Mars Odyssey spacecraft are located northeast of Olympus Mons.

Channel

This image captured by NASA's 2001 Mars Odyssey spacecraft shows windstreaks on the volcanic surface between Alba Mons and Acheron Fossae.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows windstreaks on the volcanic surface between Alba Mons and Acheron Fossae.

Wind Streaks

Dark slope streaks mark the hill sides in Lycus Sulci as seen by NASA's 2001 Mars Odyssey spacecraft.
Dark slope streaks mark the hill sides in Lycus Sulci as seen by NASA's 2001 Mars Odyssey spacecraft.

Dark Slope Streaks

Measurements with the MSL's RAD on NASA's Curiosity Mars rover during the flight to Mars and now on the surface of Mars enable an estimate of the radiation astronauts would be exposed to on an expedition to Mars.
Measurements with the MSL's RAD on NASA's Curiosity Mars rover during the flight to Mars and now on the surface of Mars enable an estimate of the radiation astronauts would be exposed to on an expedition to Mars.

Radiation Exposure Comparisons with Mars Trip Calculation

This illustration depicts a concept for the possible extent of an ancient lake inside Gale Crater. The base map combines image data from the Context Camera on NASA's Mars Reconnaissance Orbiter and color information from Viking Orbiter imagery.
This illustration depicts a concept for the possible extent of an ancient lake inside Gale Crater. The base map combines image data from the Context Camera on NASA's Mars Reconnaissance Orbiter and color information from Viking Orbiter imagery.

Possible Extent of Ancient Lake in Gale Crater, Mars

This false-color map shows the area within Gale Crater on Mars, where NASA's Curiosity rover landed on Aug. 5, 2012 PDT (Aug. 6, 2012 EDT). The rover is heading toward Glenelg, just to the lower right of Bradbury.
This false-color map shows the area within Gale Crater on Mars, where NASA's Curiosity rover landed on Aug. 5, 2012 PDT (Aug. 6, 2012 EDT). The rover is heading toward Glenelg, just to the lower right of Bradbury.

Downslope of the Fan

It is now high summer at the South Pole of Mars; the sand dunes in high latitude craters are all frost free. This image captured by NASA's 2001 Mars Odyssey spacecraft is of an unnamed crater in Sisyphi Planum has dunes and and moving out of the crater.
It is now high summer at the South Pole of Mars; the sand dunes in high latitude craters are all frost free. This image captured by NASA's 2001 Mars Odyssey spacecraft is of an unnamed crater in Sisyphi Planum has dunes and and moving out of the crater.

Dunes in Sisyphi Planum

The navigation camera on NASA's Spirit caught this stereo view of a dust devil during the on May 21, 2009. The view is to the west from Spirit's position at the 'Troy' location where Spirit had become embedded a few weeks earlier.
The navigation camera on NASA's Spirit caught this stereo view of a dust devil during the on May 21, 2009. The view is to the west from Spirit's position at the 'Troy' location where Spirit had become embedded a few weeks earlier.

Dust Devil West of Spirit, Sol 1913 (Stereo)

Do you see what I see this image captured by NASA's 2001 Mars Odyssey spacecraft? These polar layers look eerily like an alien head.
Do you see what I see this image captured by NASA's 2001 Mars Odyssey spacecraft? These polar layers look eerily like an alien head.

THEMIS Art #114

This image captured by NASA's 2001 Mars Odyssey spacecraft shows Reull Vallis where it cuts through the rim of Lipik Crater.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows Reull Vallis where it cuts through the rim of Lipik Crater.

Reull Vallis

This image from NASA's Mars Odyssey shows a sand sheet with dune forms on its surface.
This image from NASA's Mars Odyssey shows a sand sheet with dune forms on its surface.

Sand Dunes

The gullies on a Martian sand dune in this trio of images from NASA's Mars Reconnaissance Orbiter deceptively resemble features on Earth that are carved by streams of water. The dunes lie inside Matara Crater.
The gullies on a Martian sand dune in this trio of images from NASA's Mars Reconnaissance Orbiter deceptively resemble features on Earth that are carved by streams of water. The dunes lie inside Matara Crater.

Gully Changes on Martian Sand Dune

In a shallow depression called 'Yellowknife Bay,' the NASA Mars rover Curiosity drove to an edge of the feature to record this view of the ledge at the margin and a view across the 'bay' during the 130th Martian day, or sol, (Dec. 17, 2012).
In a shallow depression called 'Yellowknife Bay,' the NASA Mars rover Curiosity drove to an edge of the feature to record this view of the ledge at the margin and a view across the 'bay' during the 130th Martian day, or sol, (Dec. 17, 2012).

At Edge of 'Yellowknife Bay,' Sol 130

NASA's Mars Reconnaissance Orbiter acquired this image of the Opportunity rover on the southwest rim of 'Santa Maria' crater on New Year's Eve 2010. Opportunity is imaging the crater's interior to better reveal the geometry of rock layers.
NASA's Mars Reconnaissance Orbiter acquired this image of the Opportunity rover on the southwest rim of 'Santa Maria' crater on New Year's Eve 2010. Opportunity is imaging the crater's interior to better reveal the geometry of rock layers.

Mars Orbiter Sees Rover Opportunity at Crater Edge

This image captured by NASA's 2001 Mars Odyssey shows a small channel located on the northern margin of Arabia Terra.
This image captured by NASA's 2001 Mars Odyssey shows a small channel located on the northern margin of Arabia Terra.

Arabia Terra

This image captured by NASA's 2001 Mars Odyssey spacecraft shows dust devil tracks covering most of the surface in this region of Utopia Planitia.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows dust devil tracks covering most of the surface in this region of Utopia Planitia.

Dust Devil Tracks

Do you see what I see in this image from NASA's Mars Odyssey spacecraft? The higher elevations in this image look like a dragon. It is facing to the left, and the small crater IS NOT the eye. The large plateau on the right is the wing of the dragon.
Do you see what I see in this image from NASA's Mars Odyssey spacecraft? The higher elevations in this image look like a dragon. It is facing to the left, and the small crater IS NOT the eye. The large plateau on the right is the wing of the dragon.

THEMIS Art #121

This beautiful huge dune and associated smaller dunes are located on the floor of Russell Crater. NASA's Mars Odyssey captured this image on Nov. 28, 2010.
This beautiful huge dune and associated smaller dunes are located on the floor of Russell Crater. NASA's Mars Odyssey captured this image on Nov. 28, 2010.

Russell Crater Dunes

The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows part of the plains of Terra Sirenum.
The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows part of the plains of Terra Sirenum.

Terra Sirenum - False Color

This image from NASA's 2001 Mars Odyssey spacecraft shows an unnamed crater in Chryse Planitia. There are several concentric ridges visible on the right side of this image.
This image from NASA's 2001 Mars Odyssey spacecraft shows an unnamed crater in Chryse Planitia. There are several concentric ridges visible on the right side of this image.

Rim Complexities

The THEMIS VIS camera contains 5 filters. Data from different filters can be combined in many ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows sand dunes and sand materials in depressions near the south pole.
The THEMIS VIS camera contains 5 filters. Data from different filters can be combined in many ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows sand dunes and sand materials in depressions near the south pole.

Dunes - False Color

The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This false color image from NASA's 2001 Mars Odyssey spacecraft shows part of the region near Nili Fossae.
The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This false color image from NASA's 2001 Mars Odyssey spacecraft shows part of the region near Nili Fossae.

False Color Surface

This image from NASA's 2001 Mars Odyssey spacecraft shows a region near Memnonia Sulci, which has been eroded by the wind to form linear ridges called yardangs. The two prominent directions of wind are recorded by the two directions of the ridges.
This image from NASA's 2001 Mars Odyssey spacecraft shows a region near Memnonia Sulci, which has been eroded by the wind to form linear ridges called yardangs. The two prominent directions of wind are recorded by the two directions of the ridges.

Yardangs

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