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This image captured by NASA's 2001 Mars Odyssey spacecraft location is slightly east of Monday's image. In this image the polar scarp (called Tenuis Rupes) bisects the image.
This image captured by NASA's 2001 Mars Odyssey spacecraft location is slightly east of Monday's image. In this image the polar scarp (called Tenuis Rupes) bisects the image.

Tenuis Rupes

This image captured by NASA's 2001 Mars Odyssey spacecraft shows another unnamed crater near the north pole with dunes on its floor.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows another unnamed crater near the north pole with dunes on its floor.

Crater Dunes

As the season changes from spring to summer, the dunes surrounding the north polar cap become darker and darker as seen by NASA's 2001 Mars Odyssey spacecraft.
As the season changes from spring to summer, the dunes surrounding the north polar cap become darker and darker as seen by NASA's 2001 Mars Odyssey spacecraft.

Polar Dunes

This image from NASA's 2001 Mars Odyssey shows a portion of Rhabon Vallis, a channel south of Uranius Mons.
This image from NASA's 2001 Mars Odyssey shows a portion of Rhabon Vallis, a channel south of Uranius Mons.

Rhabon Vallis

This image from NASA's rover Opportunity shows mostly a portion of Endeavour's western rim (left); a paler-looking terrain on the horizon beyond Endeavour (right) is part of a thick deposit of material ejected by the impact that excavated Iazu Crater.
This image from NASA's rover Opportunity shows mostly a portion of Endeavour's western rim (left); a paler-looking terrain on the horizon beyond Endeavour (right) is part of a thick deposit of material ejected by the impact that excavated Iazu Crater.

Super-Resolution View of Endeavour Rim, Sol 2239

NASA's 2001 Mars Odyssey captured this region of Mars which has been eroded by the wind. Linear hills called yardangs indicate the wind direction, which varies in this area of Medusae Fossae.
NASA's 2001 Mars Odyssey captured this region of Mars which has been eroded by the wind. Linear hills called yardangs indicate the wind direction, which varies in this area of Medusae Fossae.

Wind Effects

This graphic depicts the Mars Climate Sounder instrument on NASA's Mars Reconnaissance Orbiter measuring the temperature of a cross section of the Martian atmosphere as the orbiter passes above the south polar region.
This graphic depicts the Mars Climate Sounder instrument on NASA's Mars Reconnaissance Orbiter measuring the temperature of a cross section of the Martian atmosphere as the orbiter passes above the south polar region.

Scanning Martian Atmospheric Temperatures (Graphic)

Light blue clouds fill Coprates Chasma on Mars, part of Valles Marineris, the vast 'Grand Canyon of Mars.' The clouds are mostly ice crystals and they appear blue in color in this image from NASA's Mars Odyssey.
Light blue clouds fill Coprates Chasma on Mars, part of Valles Marineris, the vast 'Grand Canyon of Mars.' The clouds are mostly ice crystals and they appear blue in color in this image from NASA's Mars Odyssey.

Mars Odyssey View of Morning Clouds in Canyon

This image was taken by NASA's Mars Reconnaissance Orbiter spacecraft, in one of the regions on Mars well-known for its viscous flow features (VFF), which are massive flowing deposits believed to be composed of a mixture of ice and dust.
This image was taken by NASA's Mars Reconnaissance Orbiter spacecraft, in one of the regions on Mars well-known for its viscous flow features (VFF), which are massive flowing deposits believed to be composed of a mixture of ice and dust.

A Tale of Two Flows

The windstreaks in this image captured by NASA's 2001 Mars Odyssey spacecraft are located in Terra Sabaea.
The windstreaks in this image captured by NASA's 2001 Mars Odyssey spacecraft are located in Terra Sabaea.

Windstreaks

This unnamed crater in Terra Cimmeria is not as round in shape as other craters. Major landslides have occurred on the crater rim, resulting in the final shape as seen by NASA's 2001 Mars Odyssey spacecraft.
This unnamed crater in Terra Cimmeria is not as round in shape as other craters. Major landslides have occurred on the crater rim, resulting in the final shape as seen by NASA's 2001 Mars Odyssey spacecraft.

Out of Round

This view from the Mars Hand Lens Imager (MAHLI) on the arm of NASA's Curiosity Mars rover shows a combination of dark and light material within a mineral vein at a site called 'Garden City' on lower Mount Sharp.
This view from the Mars Hand Lens Imager (MAHLI) on the arm of NASA's Curiosity Mars rover shows a combination of dark and light material within a mineral vein at a site called 'Garden City' on lower Mount Sharp.

Light Material Ripped Up Older Dark Vein Material

This image captured by NASA's 2001 Mars Odyssey spacecraft shows layering and linear ridges in Cavi Angusti. This region is near the south polar cap.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows layering and linear ridges in Cavi Angusti. This region is near the south polar cap.

Cavi Angusti

Olympia Undae is a large field of sand dunes surrounding Mars' North Polar ice cap. High latitude covers them with water and carbon dioxide frost in the winter so they are illuminated. NASA's Mars Reconnaissance Orbiter views these best in summer.
Olympia Undae is a large field of sand dunes surrounding Mars' North Polar ice cap. High latitude covers them with water and carbon dioxide frost in the winter so they are illuminated. NASA's Mars Reconnaissance Orbiter views these best in summer.

Changing Dunes and Ripples in Olympia Undae

This IR image from NASA's 2001 Mars Odyssey spacecraft shows streamlined islands in the channel of Mangala Valles.
This IR image from NASA's 2001 Mars Odyssey spacecraft shows streamlined islands in the channel of Mangala Valles.

Mangala Valles

Today's image from NASA's 2001 Mars Odyssey spacecraft shows the shallower extension of Coprates Chamsa called Coprates Catena.
Today's image from NASA's 2001 Mars Odyssey spacecraft shows the shallower extension of Coprates Chamsa called Coprates Catena.

Coprates Catena

The Martian north polar layered deposits are an ice sheet much like the Greenland ice sheet on the Earth in this image from NASA's Mars Reconnaissance Orbiter. This Martian ice sheet contains many layers that record variations in the Martian climate.
The Martian north polar layered deposits are an ice sheet much like the Greenland ice sheet on the Earth in this image from NASA's Mars Reconnaissance Orbiter. This Martian ice sheet contains many layers that record variations in the Martian climate.

Icy Layers and Climate Fluctuations near the Martian North Pole

NASA's Mars rover Curiosity used its Mast Camera (Mastcam) to take the images combined into this mosaic of the drill area, called 'John Klein,' where the rover ultimately performed its first sample drilling.
NASA's Mars rover Curiosity used its Mast Camera (Mastcam) to take the images combined into this mosaic of the drill area, called 'John Klein,' where the rover ultimately performed its first sample drilling.

Investigating Curiosity's Drill Area

The windstreaks in this image are located in Daedalia Planum as seen by NASA's 2001 Mars Odyssey spacecraft.
The windstreaks in this image are located in Daedalia Planum as seen by NASA's 2001 Mars Odyssey spacecraft.

Windstreaks

Three bite marks left in the Martian ground by the scoop on the robotic arm of NASA's Mars rover Curiosity are visible in this image. Each of the three bites is about 2 inches (5 centimeters) wide.
Three bite marks left in the Martian ground by the scoop on the robotic arm of NASA's Mars rover Curiosity are visible in this image. Each of the three bites is about 2 inches (5 centimeters) wide.

Curiosity's First Three Bites Into Martian Ground

This 360-degree stereo panorama assembled from images taken by the navigation camera on NASA's Mars Exporation Rover Opportunity shows terrain surrounding the position where the rover spent its 3,000th Martian day working on Mars (July 2, 2012).
This 360-degree stereo panorama assembled from images taken by the navigation camera on NASA's Mars Exporation Rover Opportunity shows terrain surrounding the position where the rover spent its 3,000th Martian day working on Mars (July 2, 2012).

Opportunity's Surroundings on 3,000th Sol, in 3-D

This 360-degree mosaic of images from the navigation camera on NASA's Mars Exploration Rover Opportunity shows the view from the western rim of
This 360-degree mosaic of images from the navigation camera on NASA's Mars Exploration Rover Opportunity shows the view from the western rim of

View of 'Santa Maria' Crater from Western Rim, Sol 2454 (Vertical)

NASA's Mars Exploration Rover Opportunity used its navigation camera to acquire this view looking toward the southwest. The scene includes tilted rocks at the edge of a bench surrounding 'Cape York,' with Burns formation rocks exposed in 'Botany Bay.'
NASA's Mars Exploration Rover Opportunity used its navigation camera to acquire this view looking toward the southwest. The scene includes tilted rocks at the edge of a bench surrounding 'Cape York,' with Burns formation rocks exposed in 'Botany Bay.'

Opportunity's View Leaving 'Cape York'

The robotic arm on NASA's Mars rover Curiosity delivered a sample of Martian soil to the rover's observation tray for the first time during the mission's 70th Martian day, or sol (Oct. 16, 2012).
The robotic arm on NASA's Mars rover Curiosity delivered a sample of Martian soil to the rover's observation tray for the first time during the mission's 70th Martian day, or sol (Oct. 16, 2012).

First Sample Placed on Curiosity's Observation Tray

As the last step in a series of inspections of the Mars Hand Lens Imager (MAHLI) aboard NASA's Mars rover Curiosity, this camera's reclosable dust cover was opened for the first time on Sept. 8, 2012.
As the last step in a series of inspections of the Mars Hand Lens Imager (MAHLI) aboard NASA's Mars rover Curiosity, this camera's reclosable dust cover was opened for the first time on Sept. 8, 2012.

Martian Ground Seen by Arm Camera With and Without Dust Cover (Thumbnails)

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