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This wind eroded crater is located between Eumenides and Gordii Dorsa. The ejecta of the crater is more resistant to the wind than the surrounding materials in this image from NASA's Mars Odyssey.
This wind eroded crater is located between Eumenides and Gordii Dorsa. The ejecta of the crater is more resistant to the wind than the surrounding materials in this image from NASA's Mars Odyssey.

Wind Effects

This image from NASA's Mars Odyssey shows part of an unnamed channel in Terra Cimmeria.
This image from NASA's Mars Odyssey shows part of an unnamed channel in Terra Cimmeria.

Channel in Terra Cimmeria

The largest crater associated with a March 2012 impact on Mars has many smaller craters around it, revealed in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.
The largest crater associated with a March 2012 impact on Mars has many smaller craters around it, revealed in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.

Large, Fresh Crater Surrounded by Smaller Craters

This set of images from NASA's Curiosity rover shows a patch of rock before and after it was cleaned by Curiosity's Dust Removal Tool (DRT).
This set of images from NASA's Curiosity rover shows a patch of rock before and after it was cleaned by Curiosity's Dust Removal Tool (DRT).

Before and After a Little Dusting

Small dunes are located on the floor of Darwin Crater as shown in this image from NASA's 2001 Mars Odyssey spacecraft.
Small dunes are located on the floor of Darwin Crater as shown in this image from NASA's 2001 Mars Odyssey spacecraft.

Darwin Crater Dunes

Researchers have found deposits of impact glass preserved in Martian craters, including Alga Crater, shown here. The detection is based on data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on NASA's Mars Reconnaissance Orbiter.
Researchers have found deposits of impact glass preserved in Martian craters, including Alga Crater, shown here. The detection is based on data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on NASA's Mars Reconnaissance Orbiter.

Spectral Signals Indicating Impact Glass on Mars

This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the dune field located on the floor of Arkhangelsky Crater.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the dune field located on the floor of Arkhangelsky Crater.

Arkhanglesky Crater Dunes

The development of the Mars rover Curiosity's capabilities for drilling into a rock on Mars required years of development work. Seen here are some of the rocks used in bit development testing and lifespan testing at JPL in 2007.
The development of the Mars rover Curiosity's capabilities for drilling into a rock on Mars required years of development work. Seen here are some of the rocks used in bit development testing and lifespan testing at JPL in 2007.

Preparation on Earth for Drilling on Mars

By high summer, the extensive dune fields of the north polar region are completely defrosted and the number and variety of dunes are readily visible. This image was captured by NASA's Mars Odyssey on August 31, 2010.
By high summer, the extensive dune fields of the north polar region are completely defrosted and the number and variety of dunes are readily visible. This image was captured by NASA's Mars Odyssey on August 31, 2010.

Polar Dunes

Lava channels east of Olympus Mons as seen by NASA's 2001 Mars Odyssey spacecraft.
Lava channels east of Olympus Mons as seen by NASA's 2001 Mars Odyssey spacecraft.

Lava Channels

This image from NASA's Curiosity rover shows the open inlet where powdered rock and soil samples will be funneled down for analysis.
This image from NASA's Curiosity rover shows the open inlet where powdered rock and soil samples will be funneled down for analysis.

Say 'Ahh' on Mars

This small region of hills appears to be forming from the fractured material just south of it. This material is the northern extension of Zephyria Planum. This image is from NASA's 2001 Mars Odyssey spacecraft.
This small region of hills appears to be forming from the fractured material just south of it. This material is the northern extension of Zephyria Planum. This image is from NASA's 2001 Mars Odyssey spacecraft.

Chaos

The complex region of channels at the top of this image, captured by NASA's 2001 Mars Odyssey spacecraft, are lava channels. These channels are called Olympica Fossae.
The complex region of channels at the top of this image, captured by NASA's 2001 Mars Odyssey spacecraft, are lava channels. These channels are called Olympica Fossae.

Olympica Fossae

In some regions of Mars the relative ages of different materials can be determined. In this image, captured by NASA's 2001 Mars Odyssey, the younger lava flows of Daedalia Planum are on top of the older Terra Sirenum materials.
In some regions of Mars the relative ages of different materials can be determined. In this image, captured by NASA's 2001 Mars Odyssey, the younger lava flows of Daedalia Planum are on top of the older Terra Sirenum materials.

Relative Age

This image from NASA's 2001 Mars Odyssey spacecraft shows a small portion of the floor of Coprates Catena, just south of the Valles Marineris canyon system. The lighter toned materials in the center of the image are layered deposits.
This image from NASA's 2001 Mars Odyssey spacecraft shows a small portion of the floor of Coprates Catena, just south of the Valles Marineris canyon system. The lighter toned materials in the center of the image are layered deposits.

Coprates Catena

This image, taken by NASA's 2001 Mars Odyssey spacecraft, shows dunes on the floor of an unnamed crater in Tyrrhena Terra.
This image, taken by NASA's 2001 Mars Odyssey spacecraft, shows dunes on the floor of an unnamed crater in Tyrrhena Terra.

Dunes in Tyrrhena Terra

This image from NASA's 2001 Mars Odyssey shows a section of Sabis Vallis.
This image from NASA's 2001 Mars Odyssey shows a section of Sabis Vallis.

Sabis Vallis

This map shows the path that NASA's Mars Exploration Rover Opportunity followed from the 1,813th Martian day, or sol, to Sol 2450 (Dec. 15, 2010) when Opportunity approached a crater informally named 'Santa Maria.'
This map shows the path that NASA's Mars Exploration Rover Opportunity followed from the 1,813th Martian day, or sol, to Sol 2450 (Dec. 15, 2010) when Opportunity approached a crater informally named 'Santa Maria.'

Opportunity Traverse Map, Sol 2450

An iron meteorite is the latest quarry for NASA's Mars Exploration Rover Opportunity. Shown here is the left-eye view of a stereo pair of images. The anaglyph can be viewed at the Photojournal.
An iron meteorite is the latest quarry for NASA's Mars Exploration Rover Opportunity. Shown here is the left-eye view of a stereo pair of images. The anaglyph can be viewed at the Photojournal.

Opportunity's Close-up of 'Oileán Ruaidh' (Stereo)

This image from the Mars Hand Lens Imager (MAHLI) on NASA's Mars rover Curiosity shows details of rock texture and color in an area where the rover's Dust Removal Tool (DRT) brushed away dust that was on the rock.
This image from the Mars Hand Lens Imager (MAHLI) on NASA's Mars rover Curiosity shows details of rock texture and color in an area where the rover's Dust Removal Tool (DRT) brushed away dust that was on the rock.

Zapped, Martian Rock

Windstreaks located in Chryse Planitia as seen by NASA's 2001 Mars Odyssey spacecraft.
Windstreaks located in Chryse Planitia as seen by NASA's 2001 Mars Odyssey spacecraft.

Windstreaks

The depressions in this image captured by NASA's 2001 Mars Odyssey spacecraft are part of Coracis Fossae, part of the highlands south of Solis Planum.
The depressions in this image captured by NASA's 2001 Mars Odyssey spacecraft are part of Coracis Fossae, part of the highlands south of Solis Planum.

Coracis Fossae

The windstreaks in this image from NASA's 2001 Mars Odyssey spacecraft are located on the lava plains between Pavonis Mons and Noctis Fossae.
The windstreaks in this image from NASA's 2001 Mars Odyssey spacecraft are located on the lava plains between Pavonis Mons and Noctis Fossae.

Windstreaks

This complex region of channels and chaos is located south of Chia crater and east of the much larger Maja Valles. This image was captured by NASA's 2001 Mars Odyssey spacecraft.
This complex region of channels and chaos is located south of Chia crater and east of the much larger Maja Valles. This image was captured by NASA's 2001 Mars Odyssey spacecraft.

Channel and Chaos

This graphic shows the variation of radiation dose measured by the Radiation Assessment Detector on NASA's Curiosity rover over about 50 sols, or Martian days, on Mars.
This graphic shows the variation of radiation dose measured by the Radiation Assessment Detector on NASA's Curiosity rover over about 50 sols, or Martian days, on Mars.

Longer-Term Radiation Variations at Gale Crater

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