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A grid of small polygons on the Martian rock surface near the right edge of this view may have originated as cracks in drying mud more than 3 billion years ago. Multiple images of this view were combined for this view from NASA's Curiosity Mars rover.
A grid of small polygons on the Martian rock surface near the right edge of this view may have originated as cracks in drying mud more than 3 billion years ago. Multiple images of this view were combined for this view from NASA's Curiosity Mars rover.

Possible Signs of Ancient Drying in Martian Rock

The network of cracks in this Martian rock slab called 'Old Soaker' may have formed from the drying of a mud layer more than 3 billion years ago. The view combines three images taken by NASA's Curiosity Mars rover on Dec. 31, 2016.
The network of cracks in this Martian rock slab called 'Old Soaker' may have formed from the drying of a mud layer more than 3 billion years ago. The view combines three images taken by NASA's Curiosity Mars rover on Dec. 31, 2016.

Possible Mud Cracks Preserved in Martian Rock

NASA's Mars Reconnaissance Orbiter shows Mars' northern-most sand dunes beginning to emerge from their winter cover of seasonal carbon dioxide (dry) ice. Dark, bare south-facing slopes are soaking up the warmth of the sun.
NASA's Mars Reconnaissance Orbiter shows Mars' northern-most sand dunes beginning to emerge from their winter cover of seasonal carbon dioxide (dry) ice. Dark, bare south-facing slopes are soaking up the warmth of the sun.

Sand Dunes in Spring

This color view of the parachute and back shell that helped deliver NASA's Curiosity rover to the surface of the Red Planet was taken by the High-HiRISE camera on NASA's Mars Reconnaissance Orbiter.
This color view of the parachute and back shell that helped deliver NASA's Curiosity rover to the surface of the Red Planet was taken by the High-HiRISE camera on NASA's Mars Reconnaissance Orbiter.

Relics of Rover's Landing

A ridge called 'Rocheport' on the western rim of Mars' Endeavour Crater spans this mosaic of images from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity.
A ridge called 'Rocheport' on the western rim of Mars' Endeavour Crater spans this mosaic of images from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity.

Mars Rover Opportunity's Panorama of 'Rocheport'

The sources of channels on the north rim of Hale Crater show fresh blue, green, purple and light toned exposures under the the overlying reddish dust, captured by NASA's Mars Reconnaissance Orbiter.
The sources of channels on the north rim of Hale Crater show fresh blue, green, purple and light toned exposures under the the overlying reddish dust, captured by NASA's Mars Reconnaissance Orbiter.

Sources of Gullies in Hale Crater

This small mesa is one of several surrounded by sand dunes in Noctis Labyrinthyus, an extensively fractured region on the western end of Valles Marineris, as seen by NASA's Mars Reconnaissance Orbiter.
This small mesa is one of several surrounded by sand dunes in Noctis Labyrinthyus, an extensively fractured region on the western end of Valles Marineris, as seen by NASA's Mars Reconnaissance Orbiter.

A Mesa in Noctis Labyrinthus

NASA's Mars Reconnaissance Orbiter spies Capri Chasma, located in the eastern portion of the Valles Marineris canyon system, the largest known canyon system in the Solar System.
NASA's Mars Reconnaissance Orbiter spies Capri Chasma, located in the eastern portion of the Valles Marineris canyon system, the largest known canyon system in the Solar System.

Hematite-Rich Deposits in Capri Chasma

This dark mound, called 'Ireson Hill,' rises about 16 feet (5 meters) above redder layered outcrop material of the Murray formation on lower Mount Sharp, Mars, near a location where NASA's Curiosity rover examined a linear sand dune in February 2017.
This dark mound, called 'Ireson Hill,' rises about 16 feet (5 meters) above redder layered outcrop material of the Murray formation on lower Mount Sharp, Mars, near a location where NASA's Curiosity rover examined a linear sand dune in February 2017.

'Ireson Hill' on Mount Sharp, Mars

A ridge called 'Rocheport' on the western rim of Mars' Endeavour Crater spans this mosaic of images from the Pancam on NASA's Mars Exploration Rover Opportunity. Enhanced color to make differences in surface materials more easily visible.
A ridge called 'Rocheport' on the western rim of Mars' Endeavour Crater spans this mosaic of images from the Pancam on NASA's Mars Exploration Rover Opportunity. Enhanced color to make differences in surface materials more easily visible.

Mars Rover Opportunity's Panorama of 'Rocheport' (Enhanced Color)

This image from NASA's Mars Reconnaissance Orbiter (MRO) shows the location with the most impressive known gully activity in Mars' northern hemisphere.
This image from NASA's Mars Reconnaissance Orbiter (MRO) shows the location with the most impressive known gully activity in Mars' northern hemisphere.

A Winter's View of a Gullied Crater

This image from NASA's Mars Reconnaissance Orbiter is of Saheki Crater, about 84 kilometers across, and located in the Southern highlands of Mars, to the north of Hellas Planitia.
This image from NASA's Mars Reconnaissance Orbiter is of Saheki Crater, about 84 kilometers across, and located in the Southern highlands of Mars, to the north of Hellas Planitia.

A Sneak Peek into Saheki's Secret Layers

Researchers used the Mastcam on NASA's Curiosity Mars rover to gain this detailed view of layers in 'Vera Rubin Ridge' from just below the ridge.
Researchers used the Mastcam on NASA's Curiosity Mars rover to gain this detailed view of layers in 'Vera Rubin Ridge' from just below the ridge.

Martian Ridge Looming Above Curiosity Prior to Ascent

Holden Crater was once filled by at least two different lakes. The sediments deposited in those lakes are relatively light-toned where exposed in this observation from NASA's Mars Reconnaissance Orbiter.
Holden Crater was once filled by at least two different lakes. The sediments deposited in those lakes are relatively light-toned where exposed in this observation from NASA's Mars Reconnaissance Orbiter.

Lakebeds in Holden Crater

These North Polar layered deposits, composed of ice, captured by NASA's Mars Reconnaissance Orbiter spacecraft, show what looks like drag folds, where rock layers bend (fold) before they break in a fault.
These North Polar layered deposits, composed of ice, captured by NASA's Mars Reconnaissance Orbiter spacecraft, show what looks like drag folds, where rock layers bend (fold) before they break in a fault.

Drag Folds in the North Polar Layered Deposits

This image from NASA's Mars Reconnaisance Orbiter covers a small central portion of the Hellas Planitia basin, the largest visible impact basin in the Solar System, and shows a dune field with lots of dust devil trails.
This image from NASA's Mars Reconnaisance Orbiter covers a small central portion of the Hellas Planitia basin, the largest visible impact basin in the Solar System, and shows a dune field with lots of dust devil trails.

Squiggles in Hellas Planitia

This image from NASA's Mars Exploration Rover Opportunity provides a look back to the crest of Endeavour Crater's rim after the rover began descending
This image from NASA's Mars Exploration Rover Opportunity provides a look back to the crest of Endeavour Crater's rim after the rover began descending

View Back Uphill After Entering 'Perseverance Valley'

A rippled linear dune of dark Martian sand, 'Nathan Bridges Dune,' dominates this full-circle panorama from NASA's Curiosity Mars rover.
A rippled linear dune of dark Martian sand, 'Nathan Bridges Dune,' dominates this full-circle panorama from NASA's Curiosity Mars rover.

'Nathan Bridges Dune' on a Martian Mountain

At the edge of Mars' permanent North Polar cap, NASA's Mars Reconnaissance Orbiter sees an exposure of the internal layers, each with a different mix of water ice, dust and dirt.
At the edge of Mars' permanent North Polar cap, NASA's Mars Reconnaissance Orbiter sees an exposure of the internal layers, each with a different mix of water ice, dust and dirt.

North Polar Cap Layers and Ledges

NASA's Mars Reconnaissance Orbiter captured this image on 27 June 2014, when Curiosity had just crossed the edge of the 3-sigma landing.
NASA's Mars Reconnaissance Orbiter captured this image on 27 June 2014, when Curiosity had just crossed the edge of the 3-sigma landing.

Curiosity Offside!

Towards the top of this image from NASA's 2001 Mars Odyssey spacecraft is a 'T' shaped depression and two sections of narrow channel located on the northeast part of the Elysium Mons volcanic complex. Fluids (like water, or lava) flow downhill.
Towards the top of this image from NASA's 2001 Mars Odyssey spacecraft is a 'T' shaped depression and two sections of narrow channel located on the northeast part of the Elysium Mons volcanic complex. Fluids (like water, or lava) flow downhill.

Which Came First?

NASA's Opportunity had driven 72.3 meters southward (237 feet) on June 10. Engineers drove the rover backward as a strategy to counteract an increase in the amount of current drawn by the drive motor of the right-front wheel. 3D glasses are necessary.
NASA's Opportunity had driven 72.3 meters southward (237 feet) on June 10. Engineers drove the rover backward as a strategy to counteract an increase in the amount of current drawn by the drive motor of the right-front wheel. 3D glasses are necessary.

Opportunity's View After 72-Meter Drive, Sol 1912 (Stereo)

This image from NASA's 2001 Mars Odyssey spacecraft shows the western part of the smaller summit caldera on Pavonis Mons. Pavonis Mons is one of the three aligned Tharsis Volcanoes.
This image from NASA's 2001 Mars Odyssey spacecraft shows the western part of the smaller summit caldera on Pavonis Mons. Pavonis Mons is one of the three aligned Tharsis Volcanoes.

Investigating Mars: Pavonis Mons

The Chemistry and Camera instrument on NASA's Curiosity Mars rover examined a freshly brushed area on target rock 'Christmas Cove' and found spectral evidence of hematite, an iron-oxide mineral.
The Chemistry and Camera instrument on NASA's Curiosity Mars rover examined a freshly brushed area on target rock 'Christmas Cove' and found spectral evidence of hematite, an iron-oxide mineral.

Curiosity's ChemCam Checks 'Christmas Cove' Colors

This pair of images from the Mast Camera on NASA's Curiosity rover illustrates how special filters are used to scout terrain ahead for variations in the local bedrock.
This pair of images from the Mast Camera on NASA's Curiosity rover illustrates how special filters are used to scout terrain ahead for variations in the local bedrock.

Mastcam Special Filters Help Locate Variations Ahead

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