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This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of Mawrth Valles, a channel carved by giant floods billions of years ago.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of Mawrth Valles, a channel carved by giant floods billions of years ago.

The Martian, Part 2: Mawrth Valles

The subtle paired fractues at the bottom of this image from NASA's 2001 Mars Odyssey spacecraft are part of Sirenum Fossae. Numerous gullies at the top of the image are located on the intersection of two crater rims.
The subtle paired fractues at the bottom of this image from NASA's 2001 Mars Odyssey spacecraft are part of Sirenum Fossae. Numerous gullies at the top of the image are located on the intersection of two crater rims.

More Sirenum Fossae

This image from NASA's Mars Reconnaissance Orbiter shows exposures of deposits along the plateau just to the south of Coprates Chasma.
This image from NASA's Mars Reconnaissance Orbiter shows exposures of deposits along the plateau just to the south of Coprates Chasma.

Clays along the Coprates Chasma Plateau

The dunes in this image captured by NASA's 2001 Mars Odyssey spacecraft are part of Olympia Undae, a huge dune field near the north polar cap.
The dunes in this image captured by NASA's 2001 Mars Odyssey spacecraft are part of Olympia Undae, a huge dune field near the north polar cap.

Polar Dunes

This image shows several wind streaks in Syrtis Major Planum as seen by NASA's 2001 Mars Odyssey spacecraft.
This image shows several wind streaks in Syrtis Major Planum as seen by NASA's 2001 Mars Odyssey spacecraft.

Wind Streaks

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

Rabe Crater Dunes

This area seen by NASA's Mars Reconnaissance Orbiter is known as the Deuteronilus contact of the Isidis Basin; it has been interpreted as a possible ancient shoreline. There are also suggestions that this contact is of volcanic origin.
This area seen by NASA's Mars Reconnaissance Orbiter is known as the Deuteronilus contact of the Isidis Basin; it has been interpreted as a possible ancient shoreline. There are also suggestions that this contact is of volcanic origin.

Hints of an Ancient Shoreline in Southern Isidis Planitia

This image from NASA's Mars Odyssey spacecraft shows the southwestern floor of Gale Crater. A fairly large channel that dissects the crater rim is visible entering from the bottom of the frame and continuing northward.
This image from NASA's Mars Odyssey spacecraft shows the southwestern floor of Gale Crater. A fairly large channel that dissects the crater rim is visible entering from the bottom of the frame and continuing northward.

Images of Gale #23

For scale, the Lincoln penny on the MAHLI calibration target is three-fourths inch (19 millimeters) in diameter. The calibration target is mounted on NASA's Mars rover Curiosity.
For scale, the Lincoln penny on the MAHLI calibration target is three-fourths inch (19 millimeters) in diameter. The calibration target is mounted on NASA's Mars rover Curiosity.

First Night Image of MAHLI Calibration Target in White Lighting

This is a close-up view of the northern two-thirds of one of the quadrangles (number 50) that were mapped onto the landing region of NASA's Curiosity rover; background image obtained by NASA's Mars Reconnaissance Orbiter.
This is a close-up view of the northern two-thirds of one of the quadrangles (number 50) that were mapped onto the landing region of NASA's Curiosity rover; background image obtained by NASA's Mars Reconnaissance Orbiter.

Close-up of Curiosity's Landing Region

This image from NASA's 2001 Mars Odyssey spacecraft shows a portion of Samara Valles.
This image from NASA's 2001 Mars Odyssey spacecraft shows a portion of Samara Valles.

Samara Valles

This cross-section view of underground layers near Mars' south pole is a radargram based on data from the Shallow Subsurface Radar (SHARAD) instrument on NASA's Mars Reconnaissance Orbiter.
This cross-section view of underground layers near Mars' south pole is a radargram based on data from the Shallow Subsurface Radar (SHARAD) instrument on NASA's Mars Reconnaissance Orbiter.

Cross Section of Buried Carbon-Dioxide Ice on Mars

Small channels dissect the northwestern rim of Gale Crater in this image captured by NASA's Mars Odyssey.
Small channels dissect the northwestern rim of Gale Crater in this image captured by NASA's Mars Odyssey.

Gale Crater Channels

In the winter a layer of carbon dioxide ice (dry ice) covers the north polar sand dunes as shown by NASA's Mars Reconnaissance Orbiter. In the spring the sublimation of the ice (going directly from ice to gas) causes a host of uniquely Martian phenomena.
In the winter a layer of carbon dioxide ice (dry ice) covers the north polar sand dunes as shown by NASA's Mars Reconnaissance Orbiter. In the spring the sublimation of the ice (going directly from ice to gas) causes a host of uniquely Martian phenomena.

A Burst of Spring

This view of an inverted crater in the Arabia Terra region of Mars is among the images taken by NASA's Mars Reconnaissance Orbiter in early 2010 as the spacecraft approached the 100-terabit milestone in total data returned.
This view of an inverted crater in the Arabia Terra region of Mars is among the images taken by NASA's Mars Reconnaissance Orbiter in early 2010 as the spacecraft approached the 100-terabit milestone in total data returned.

Dunes and Inverted Crater in Arabia Terra

This graphic maps locations of the first 14 sites where NASA's Curiosity Mars rover collected rock or soil samples for analysis by laboratory instruments inside the vehicle.
This graphic maps locations of the first 14 sites where NASA's Curiosity Mars rover collected rock or soil samples for analysis by laboratory instruments inside the vehicle.

Curiosity's First 14 Rock or Soil Sampling Sites on Mars

This image taken by NASA's 2001 Mars Odyssey of Ganges Chasma shows where a large portion of the canyon wall has given way and formed a landslide deposit.
This image taken by NASA's 2001 Mars Odyssey of Ganges Chasma shows where a large portion of the canyon wall has given way and formed a landslide deposit.

Ganges Chasma

This image captured by NASA's 2001 Mars Odyssey shows just one of many lava channels located on the Elysium Mons volcanic complex.
This image captured by NASA's 2001 Mars Odyssey shows just one of many lava channels located on the Elysium Mons volcanic complex.

Elysium Channels

Located on the southern part of the Elysium Mons Volcanic region the channels in this image captured by NASA's Mars Odyssey were likely formed by the flow of lava.
Located on the southern part of the Elysium Mons Volcanic region the channels in this image captured by NASA's Mars Odyssey were likely formed by the flow of lava.

Volcanic Channels

This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the rim of an unnamed crater in Terra Sabaea.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows part of the rim of an unnamed crater in Terra Sabaea.

Dark Slope Streaks

The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows part of Peraea Cavus.
The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This image from NASA's 2001 Mars Odyssey spacecraft shows part of Peraea Cavus.

Peraea Cavus - False Color

This image captured by NASA's 2001 Mars Odyssey spacecraft shows a small portion of the boundary region between Terra Sabaea and Utopia Planitia.
This image captured by NASA's 2001 Mars Odyssey spacecraft shows a small portion of the boundary region between Terra Sabaea and Utopia Planitia.

Ridges

Researchers estimating the amount of carbon held in the ground at the largest known carbonate-containing deposit on Mars utilized data including physical properties from THEMIS (left) and mineral information from CRISM (right).
Researchers estimating the amount of carbon held in the ground at the largest known carbonate-containing deposit on Mars utilized data including physical properties from THEMIS (left) and mineral information from CRISM (right).

Multiple Instruments Used for Mars Carbon Estimate

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 image from NASA's 2001 Mars Odyssey spacecraft show part of the floor of an unnamed crater in Noachis Terra.
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 image from NASA's 2001 Mars Odyssey spacecraft show part of the floor of an unnamed crater in Noachis Terra.

Noachis Terra - False Color

Like the previous image from NASA's 2001 Mars Odyssey spacecraft, this one shows one of the many unnamed channels on the northern margin of Arabia Terra.
Like the previous image from NASA's 2001 Mars Odyssey spacecraft, this one shows one of the many unnamed channels on the northern margin of Arabia Terra.

Arabia Terra Channels

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