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This image captured by NASA's 2001 Mars Odyssey spacecraft shows the region between Candor Chasma and Melas Chasma.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows the region between Candor Chasma and Melas Chasma.

Valles Marineris

This view of layered rocks on the floor of McLaughlin Crater shows sedimentary rocks that contain spectroscopic evidence for minerals formed through interaction with water. A combination of clues suggests this crater once held a lake fed by groundwater.
This view of layered rocks on the floor of McLaughlin Crater shows sedimentary rocks that contain spectroscopic evidence for minerals formed through interaction with water. A combination of clues suggests this crater once held a lake fed by groundwater.

Layers with Carbonate Content Inside McLaughlin Crater on Mars

NASA's Curiosity rover landed in the Martian crater known as Gale Crater, which is approximately the size of Connecticut and Rhode Island combined. A green dot shows where the rover landed, well within its targeted landing ellipse, outlined in blue.
NASA's Curiosity rover landed in the Martian crater known as Gale Crater, which is approximately the size of Connecticut and Rhode Island combined. A green dot shows where the rover landed, well within its targeted landing ellipse, outlined in blue.

Curiosity Cradled by Gale Crater

This image taken by NASA's Mars Reconnaissance Orbiter shows Samara Valles, one of the longest ancient valley systems on Mars; its surface is mantled with dust as evidenced by the system of dunes that line the valley floor.
This image taken by NASA's Mars Reconnaissance Orbiter shows Samara Valles, one of the longest ancient valley systems on Mars; its surface is mantled with dust as evidenced by the system of dunes that line the valley floor.

Dunes on Floor of Samara Valles, Mars

These three images taken by NASA's Mars Reconnaissance Orbiter are called 'linear gullies' and were taken at different times of the year to observe changes.
These three images taken by NASA's Mars Reconnaissance Orbiter are called 'linear gullies' and were taken at different times of the year to observe changes.

Some Gullies on Mars Could Be Tracks of Sliding Dry Ice

This image captured by NASA's 2001 Mars Odyssey spacecraft shows a small portion of Daedalia Planun, the result of vast eruptions of Arsia Mons.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows a small portion of Daedalia Planun, the result of vast eruptions of Arsia Mons.

Daedalia Planum

This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the north polar cap. This image is along the cap margin.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the north polar cap. This image is along the cap margin.

North Polar Cap

This image captured by NASA's 2001 Mars Odyssey spacecraft shows several channels dissecting the higher elevations of Claritas Fossae.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows several channels dissecting the higher elevations of Claritas Fossae.

Claritas Fossae

The Tharsis region of Mars is covered in vast lava flows, many with channels, as seen by NASA's Mars Reconnaissance Orbiter. Some channels, however, resemble features that may have been formed by water.
The Tharsis region of Mars is covered in vast lava flows, many with channels, as seen by NASA's Mars Reconnaissance Orbiter. Some channels, however, resemble features that may have been formed by water.

A Long and Winding Channel in Tharsis

This image captured by NASA's 2001 Mars Odyssey spacecraft shows a landslide deposit from the cliffside along Tiu Valles.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows a landslide deposit from the cliffside along Tiu Valles.

Tiu Valles Landslide

The THEMIS VIS camera contains 5 filters. Data from the filters can be combined in many ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows the region just west of the dune/polar cap image from earlier this week.
The THEMIS VIS camera contains 5 filters. Data from the filters can be combined in many ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows the region just west of the dune/polar cap image from earlier this week.

Southern Dunes - False Color

The THEMIS VIS camera contains 5 filters. Data from different filters can be used in many ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows a large sand sheet and dune forms at the margin of the south polar cap.
The THEMIS VIS camera contains 5 filters. Data from different filters can be used in many ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows a large sand sheet and dune forms at the margin of the south polar cap.

Southern Dunes - False Color

This image captured by NASA's 2001 Mars Odyssey spacecraft shows where an impact created a crater on top of a group of ridges called Tanaica Montes.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows where an impact created a crater on top of a group of ridges called Tanaica Montes.

Tanaica Montes

This image from NASA's 2001 Mars Odyssey spacecraft shows an unnamed channel draining from the highlands of Promethei Terra to lowlands of the Hellas Basin.
This image from NASA's 2001 Mars Odyssey spacecraft shows an unnamed channel draining from the highlands of Promethei Terra to lowlands of the Hellas Basin.

Channel

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 Reull Vallis.
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 Reull Vallis.

Reull Vallis - False Color

Located on the floor of an unnamed crater in Terra Sirenum, the crater in the center of the this image captured by NASA's 2001 Mars Odyssey spacecraft has numerous gullies on the inner rim.
Located on the floor of an unnamed crater in Terra Sirenum, the crater in the center of the this image captured by NASA's 2001 Mars Odyssey spacecraft has numerous gullies on the inner rim.

Terra Sirenum

This image from NASA's Mars Odyssey spacecraft shows some of the dunes that are located near the north polar cap. This region of dunes is part of Siton Undae.
This image from NASA's Mars Odyssey spacecraft shows some of the dunes that are located near the north polar cap. This region of dunes is part of Siton Undae.

Siton Undae

Triangular shaped deposits at cliff edges are termed alluvial fans. Alluvial fans typically form in arid regions were water flow is limited, so deposits of material are not washed away as seen by NASA's 2001 Mars Odyssey spacecraft.
Triangular shaped deposits at cliff edges are termed alluvial fans. Alluvial fans typically form in arid regions were water flow is limited, so deposits of material are not washed away as seen by NASA's 2001 Mars Odyssey spacecraft.

Alluvial Fans

Numerous dark slope streaks mark the complex inner rim of this unnamed crater in Terra Sabaea in this image from NASA's 2001 Mars Odyssey spacecraft.
Numerous dark slope streaks mark the complex inner rim of this unnamed crater in Terra Sabaea in this image from NASA's 2001 Mars Odyssey spacecraft.

Dark Slope Streaks

A small landslide deposit of an unnamed crater is visible in this image captured by NASA's 2001 Mars Odyssey spacecraft.
A small landslide deposit of an unnamed crater is visible in this image captured by NASA's 2001 Mars Odyssey spacecraft.

Landslide

This plot shows the first-ever look at the deuterium to hydrogen ratio measured from the surface of Mars, as detected by the Sample Analysis at Mars instrument, or SAM, on NASA's Curiosity rover.
This plot shows the first-ever look at the deuterium to hydrogen ratio measured from the surface of Mars, as detected by the Sample Analysis at Mars instrument, or SAM, on NASA's Curiosity rover.

Atmospheric Loss on Mars

This image captured by NASA's 2001 Mars Odyssey spacecraft shows the southern rim of Lockyer Crater and part of its ejecta blanket.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows the southern rim of Lockyer Crater and part of its ejecta blanket.

Ejecta Texture

The dunes in this image from NASA's Mars Odyssey are located on the floor of Arkhangelsky Crater.
The dunes in this image from NASA's Mars Odyssey are located on the floor of Arkhangelsky Crater.

Arkhangelsky Crater Dunes

NASA's Mars Exploration Rover Opportunity used its rock abrasion tool on a rock informally named 'Gagarin,' leaving a circular mark. At the end of the rover's arm, the tool turret is positioned with the rock abrasion tool pointing upward.
NASA's Mars Exploration Rover Opportunity used its rock abrasion tool on a rock informally named 'Gagarin,' leaving a circular mark. At the end of the rover's arm, the tool turret is positioned with the rock abrasion tool pointing upward.

Opportunity's Arm and 'Gagarin' Rock, Sol 405

This image from NASA's Mars Odyssey shows a portion of Tithonium Chasma, part of western Valles Marineris.
This image from NASA's Mars Odyssey shows a portion of Tithonium Chasma, part of western Valles Marineris.

Tithonium Chasma

Currently displaying images 1951-1975 of 4807
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