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This image shows part of the sand sheet and dunes on the floor of Rabe Crater as seen by NASA's 2001 Mars Odyssey spacecraft.
This image shows part of the sand sheet and dunes on the floor of Rabe Crater as seen by NASA's 2001 Mars Odyssey spacecraft.

Rabe Crater Dunes

The complex channel and streamlined islands are part of Maja Valles as seen by NASA's 2001 Mars Odyssey spacecraft.
The complex channel and streamlined islands are part of Maja Valles as seen by NASA's 2001 Mars Odyssey spacecraft.

Maja Valles

The channels in this image captured by NASA's 2001 Mars Odyssey spacecraft were most likely created by lava flows from Alba Mons, located in the northern Tharsis region.
The channels in this image captured by NASA's 2001 Mars Odyssey spacecraft were most likely created by lava flows from Alba Mons, located in the northern Tharsis region.

Channels

More dunes are encountered surrounding the north polar cap by NASA's 2001 Mars Odyssey spacecraft.
More dunes are encountered surrounding the north polar cap by NASA's 2001 Mars Odyssey spacecraft.

More Polar Dunes

This artist's impression Mars' Gale Crater depicts a cross section through the mountain in the middle of the crater, from a viewpoint looking toward the southeast. NASA's rover Curiosity will land in Gale Crater in August 2012.
This artist's impression Mars' Gale Crater depicts a cross section through the mountain in the middle of the crater, from a viewpoint looking toward the southeast. NASA's rover Curiosity will land in Gale Crater in August 2012.

Cross Section of Gale Crater, Mars

The unusual texture seen in this image of Galle Crater is likely layered deposits that have been eroded. Small dune and windstreak features in this image from NASA's 2001 Mars Odyssey spacecraft, indicate that winds are part of the erosive process.
The unusual texture seen in this image of Galle Crater is likely layered deposits that have been eroded. Small dune and windstreak features in this image from NASA's 2001 Mars Odyssey spacecraft, indicate that winds are part of the erosive process.

Galle Crater Floor

This image from NASA's 2001 Mars Odyssey spacecraft is a false color image of part of the northern flank of Ascreaus Mons. The bluish section at the top of the image may indicate an atmospheric haze.
This image from NASA's 2001 Mars Odyssey spacecraft is a false color image of part of the northern flank of Ascreaus Mons. The bluish section at the top of the image may indicate an atmospheric haze.

False Color Ascraeus Mons

This graph shows changes in apparent brightness of comet C/2013 A1 Siding Spring as it approached and receded from Mars, as seen by the HiRISE camera on NASA's Mars Reconnaissance Orbiter. The pattern suggests the comet rotates once every eight hours.
This graph shows changes in apparent brightness of comet C/2013 A1 Siding Spring as it approached and receded from Mars, as seen by the HiRISE camera on NASA's Mars Reconnaissance Orbiter. The pattern suggests the comet rotates once every eight hours.

Brightness Rhythm of Mars Flyby Comet Is Clue to Rotation Rate

This set of images illustrates how the science filters of the Mast Camera (Mastcam) on NASA's Mars rover Curiosity can be used to investigate aspects of the composition and mineralogy of materials on Mars.
This set of images illustrates how the science filters of the Mast Camera (Mastcam) on NASA's Mars rover Curiosity can be used to investigate aspects of the composition and mineralogy of materials on Mars.

Drill Hole Image and Spectra Acquired by Mastcam

The unnamed channel in this image captured by NASA's 2001 Mars Odyssey spacecraft is located on the northeastern margin of Tempe Terra.
The unnamed channel in this image captured by NASA's 2001 Mars Odyssey spacecraft is located on the northeastern margin of Tempe Terra.

Tempe Terra

Just as on Earth, volcanism and tectonism are found together on Mars. In this image from NASA's 2001 Mars Odyssey spacecraft the ridges and fractures of Claritas Fossae are affecting or perhaps hosting the volcanic flows of Solis Planum.
Just as on Earth, volcanism and tectonism are found together on Mars. In this image from NASA's 2001 Mars Odyssey spacecraft the ridges and fractures of Claritas Fossae are affecting or perhaps hosting the volcanic flows of Solis Planum.

Volcanism & Tectonism

NASA's Mars Reconnaissance Orbiter reveals underground ice exposed by impact cratering. The impact that dug the crater excavated water ice from beneath the surface.
NASA's Mars Reconnaissance Orbiter reveals underground ice exposed by impact cratering. The impact that dug the crater excavated water ice from beneath the surface.

Underground Ice on Mars Exposed by Impact Cratering

This graphic shows tenfold spiking in the abundance of methane in the Martian atmosphere surrounding NASA's Curiosity Mars rover, as detected by a series of measurements made with the Tunable Laser Spectrometer instrument in the rover's laboratory suite.
This graphic shows tenfold spiking in the abundance of methane in the Martian atmosphere surrounding NASA's Curiosity Mars rover, as detected by a series of measurements made with the Tunable Laser Spectrometer instrument in the rover's laboratory suite.

Methane Measurements by NASA's Curiosity in Mars' Gale Crater

This image depicts how a mountain inside a Mars' Gale Crater might have formed. At left, the crater fills with layers of sediment. Yellow is for deposits in alluvial fans, deltas, and drifts during both wet and dry periods.
This image depicts how a mountain inside a Mars' Gale Crater might have formed. At left, the crater fills with layers of sediment. Yellow is for deposits in alluvial fans, deltas, and drifts during both wet and dry periods.

Sedimentation and Erosion in Gale Crater, Mars

A comparison of two radargrams from the SHARAD instrument on NASA's Mars Reconnaissance Orbiter shows effects on the Martian ionosphere from the close passage of a comet.
A comparison of two radargrams from the SHARAD instrument on NASA's Mars Reconnaissance Orbiter shows effects on the Martian ionosphere from the close passage of a comet.

Radar Indication of Effect of Comet Flyby on Martian Ionosphere

A surprise landslump in Melas Chasma was observed by NASA's Mars Reconnaissance Orbiter.
A surprise landslump in Melas Chasma was observed by NASA's Mars Reconnaissance Orbiter.

A Surprise Landslump in Melas Chasma

Multiple channels dissect the rim of this unnamed crater in Noachis Terra as seen by NASA's 2001 Mars Odyssey spacecraft.
Multiple channels dissect the rim of this unnamed crater in Noachis Terra as seen by NASA's 2001 Mars Odyssey spacecraft.

Rim Channels

This image from NASA's Mars Odyssey spacecraft shows Gale crater, which is east of the landing site. It shows the northern extent of the dunes, and the layers in Mt. Sharp are visible at the bottom of the image.
This image from NASA's Mars Odyssey spacecraft shows Gale crater, which is east of the landing site. It shows the northern extent of the dunes, and the layers in Mt. Sharp are visible at the bottom of the image.

Images of Gale #3

Channels are a common feature on the margin of Terra Cimmeria where the elevation changes from highland to northern lowlands in this image captured by NASA's Mars Odyssey.
Channels are a common feature on the margin of Terra Cimmeria where the elevation changes from highland to northern lowlands in this image captured by NASA's Mars Odyssey.

Channels on Terra Cimmeria

NASA's Mars Odyssey captured this image of Ulysses Fossae, located in the Tharsis Volcanic region. Cross cutting tectonic fractures indicate that this region underwent stresses in multiple directions.
NASA's Mars Odyssey captured this image of Ulysses Fossae, located in the Tharsis Volcanic region. Cross cutting tectonic fractures indicate that this region underwent stresses in multiple directions.

Ulysses 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 Ganges Chasma.
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 Ganges Chasma.

Ganges Chasma - False Color

The lava flows in this image from NASA's 2001 Mars Odyssey spacecraft are part of Solis Planum.
The lava flows in this image from NASA's 2001 Mars Odyssey spacecraft are part of Solis Planum.

Solis Planum

This observation from NASA's Mars Reconnaissance Orbiter covers an outcrop of possible cyclic bedding within a crater in Arabia Terra.
This observation from NASA's Mars Reconnaissance Orbiter covers an outcrop of possible cyclic bedding within a crater in Arabia Terra.

Possible Cyclic Bedding within a Crater in Arabia Terra

This image shows a portion of the dunes on the floor of Rabe Crater captured by NASA's 2001 Mars Odyssey spacecraft.
This image shows a portion of the dunes on the floor of Rabe Crater captured by NASA's 2001 Mars Odyssey spacecraft.

Rabe Crater Dunes

The channels in this image, taken by NASA's 2001 Mars Odyssey spacecraft, are called Hephaestus Fossae and were most likely formed by lava flow and erosion rather than being eroded by water.
The channels in this image, taken by NASA's 2001 Mars Odyssey spacecraft, are called Hephaestus Fossae and were most likely formed by lava flow and erosion rather than being eroded by water.

Hephaestus Fossae

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