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https://photojournal.jpl.nasa.gov/catalog/PIA17630	/content/Nasa_Mars_Images/PIA17630_modest.jpg	This image from NASA's Mars Reconnaissance Orbiter shows a crater within the larger Schiaparelli Crater.	Like any diverse group of explorers, scientists on the HiRISE team and the general public who submit target suggestions have different goals and interests for the Mars images they hope to get. More often than not, an image intended for one particular science investigation ends up having many other applications, answering and raising new questions. This image was targeted to look at potential changes in the distribution of dark sand compared to earlier pictures (PSP_005897_1790 three Mars years ago and ESP_016406_1790/ESP_017118_1790, approximately 1.5 Mars years ago). In a preliminary investigation, no such changes have been found, although we will keep looking.Originally, this area -- a crater within the larger Schiaparelli Crater -- was targeted to investigate the circumferential layers that fill the crater, evidence for possible past deposition from airfall dust or even water. In this image, we note something that becomes apparent if we zoom in to many of the areas containing dark sand. Here, the sand is on top of periodic bedrock edges oriented semi-radially from the crater and approximately perpendicular to the layers. How did these ridges form, and what is the relationship to the sand?The ridge origin is a mystery, but the sand may simply be nucleating on the ridges. This suggests that some apparent large ripples on Mars are sand nucleation sites on pre-existing topography. The extent of such ridges, and their relationship to sand elsewhere on the planet, can be further understood with future HiRISE images in other areas.HiRISE is one of six instruments on NASA's Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates the orbiter's HiRISE camera, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for the NASA Science Mission Directorate, Washington.
https://photojournal.jpl.nasa.gov/catalog/PIA24952	/content/Nasa_Mars_Images/PIA24952_modest.jpg	This image from NASA's Mars Odyssey shows part of Apollinaris Sulci. Yardangs are created by long term winds scouring a poor cemented surface material into linear ridges and valleys.	Context imageToday's VIS image shows part of Apollinaris Sulci. Yardangs are present at the top of this VIS image. These features are created by long term winds scouring a poor cemented surface material into linear ridges and valleys. The direction of the ridge/valley is aligned with the wind direction, indicating the dominant wind direction in this region was north/south. These yardangs are the southern margin of Apollinaris Sulci, located south of Apollinaris Mons. It has been suggested that this region of Mars provides a large percentage of the surface dust seen around the planet. Ash falls from nearby volcanoes may have been the source of the surface materials eroded into these and other wind etched landforms.Orbit Number: 86395 Latitude: -12.5877 Longitude: 177.796 Instrument: VIS Captured: 2021-06-06 01:38Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA10639	/content/Nasa_Mars_Images/PIA10639_modest.jpg	Monohydrated Sulfates in Aurorae Chaos	This image of sulfate-containing deposits in Aurorae Chaos was taken by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) at 0653 UTC (2:53 a.m. EDT) on June 10, 2007, near 7.5 degrees south latitude, 327.25 degrees east longitude. CRISM's image was taken in 544 colors covering 0.36-3.92 micrometers, and shows features as small as 40 meters (132 feet) across. The region covered is roughly 12 kilometers (7.5 miles) wide at its narrowest point.Aurorae Chaos lies east of the Valles Marineris canyon system. Its western edge extends toward Capri and Eos Chasmata, while its eastern edge connects with Aureum Chaos. Some 750 kilometers (466 miles) wide, Aurorae Chaos is most likely the result of collapsed surface material that settled when subsurface ice or water was released.The top panel in the montage above shows the location of the CRISM image on a mosaic taken by the Mars Odyssey spacecraft's Thermal Emission Imaging System (THEMIS). The CRISM data covers an area featuring several knobs of erosion-resistant material at one end of what appears to be a large teardrop shaped plateau. Similar plateaus occur throughout the interior of Valles Marineris, and they are formed of younger, typically layered rocks that post-date formation of the canyon system. Many of the deposits contain sulfate-rich layers, hinting at ancient saltwater.The center left image, an infrared false color image, reveals a swath of light-colored material draped over the knobs. The center right image unveils the mineralogical composition of the area, with yellow representing monohydrated sulfates (sulfates with one water molecule incorporated into each molecule of the mineral).The lower two images are renderings of data draped over topography with 5 times vertical exaggeration. These images provide a view of the topography and reveal how the monohydrated sulfate-containing deposits drape over the knobs and also an outcrop in lower-elevation parts of the plateau.CRISM is one of six science instruments on NASA's Mars Reconnaissance Orbiter. Led by The Johns Hopkins University Applied Physics Laboratory, Laurel, Md., the CRISM team includes expertise from universities, government agencies and small businesses in the United States and abroad. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter and the Mars Science Laboratory for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the orbiter.
https://photojournal.jpl.nasa.gov/catalog/PIA24991	/content/Nasa_Mars_Images/PIA24991_modest.jpg	This image from NASA's Mars Odyssey shows Olympia Undae in the middle of north polar spring.	Context imageThis VIS image of Olympia Undae was collected in the middle of north polar spring. As the season changes into summertime, the dune crests will lose all the winter frosts, completely revealing the darker sand beneath. The density of dunes and the alignments of the dune crests varies with location, controlled by the amount of available sand and the predominant winds over time.Olympia Undae is a vast dune field in the north polar region of Mars. It consists of a broad sand sea or erg that partly rings the north polar cap from about 120° to 240°E longitude and 78° to 83°N latitude. The dune field covers an area of approximately 470,000 km2 (bigger than California, smaller than Texas). Olympia Undae is the largest continuous dune field on Mars. Olympia Undae is not the only dune field near the north polar cap, several other smaller fields exist in the same latitude, but in other ranges of longitude, e.g. Abolos and Siton Undae. Barchan and transverse dune forms are the most common. In regions with limited available sand individual barchan dunes will form, the surface beneath and between the dunes is visible. In regions with large sand supplies, the sand sheet covers the underlying surface, and dune forms are found modifying the surface of the sand sheet. In this case transverse dunes are more common. Barchan dunes "point" down wind, transverse dunes are more linear and form parallel to the wind direction. The "square" shaped transverse dunes in Olympia Undae are due to two prevailing wind directions.Orbit Number: 86712 Latitude: 80.9536 Longitude: 222.236 Instrument: VIS Captured: 2021-07-02 04:40Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA20274	/content/Nasa_Mars_Images/PIA20274_modest.jpg	The yellow triangles on this graph indicate concentrations of the elements titanium and silicon in selected rock targets with high silica content analyzed by the APXS instrument on NASA's Curiosity rover in Mars' Gale Crater.	The yellow triangles on this graph indicate concentrations of the elements titanium and silicon in selected rock targets with high silica content analyzed by the Alpha Particle X-ray Spectrometer (APXS) instrument on NASA's Curiosity rover in Mars' Gale Crater. The pattern shows a correlation between enriched silicon content and enriched titanium content. Titanium is difficult to mobilize in weathering environments, and this correlation suggests that both titanium and silicon remain as the residue of acidic weathering. Ongoing research aims to distinguish between that possible explanation for silicon enrichment and an alternative of mobilized silicon being added to the site (see PIA20275).As a general comparison with these selected high-silica targets in Gale Crater, the gray dots in the graph show the range of titanium and silicon concentrations in all Martian targets analyzed by APXS instruments on three Mars rovers at three different areas of Mars.NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the Mars Science Laboratory Project for NASA's Science Mission Directorate, Washington. JPL designed and built the project's Curiosity rover. More information about Curiosity is online at http://www.nasa.gov/msl and http://mars.jpl.nasa.gov/msl/.
https://photojournal.jpl.nasa.gov/catalog/PIA14152	/content/Nasa_Mars_Images/PIA14152_modest.jpg	This image from NASA's 2001 Mars Odyssey shows a huge ridge of sand in Russell Crater that makes its dune field one of the most unusual on Mars.	Context imageThe huge ridge of sand in Russell Crater makes its dune field one of the most unusual on Mars.Orbit Number: 41208 Latitude: 13.0148 Longitude: 74.2559 Instrument: VIS Captured: 2011-03-30 08:19Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA00790	/content/Nasa_Mars_Images/PIA00790_modest.jpg	These images show NASA's Mars Pathfinder's backshell to the southeast of the lander, and in front and to the left of 'Big Crater' after landing on Mars in 1997.	During the Entry, Descent and Landing phase of the mission, the final step is the separation of the lander and its surrounding airbags from the backshell. The conical backshell above the lander contains three solid rocketmotors each providing about a ton of force for over 2 seconds. They are activated by the computer in the lander. Electrical wires that run up the bridle close relays in the backshell which ignite the three rockets at the same instant.The brief firing of the solid rocketmotors at an altitude of 80-100 meters is intended to essentially bring the downward movement of the lander to a halt some 12 meters above the surface. The bridle separating the lander and heat shield is then cut in the lander, resulting in the backshell driving up and into the parachute under the residual impulse of the rockets, while the lander, encased in airbags, falls to the surface.The backshell is to the southeast of the lander, and in front and to the left of "Big Crater."Mars Pathfinder is the second in NASA's Discovery program of low-cost spacecraft with highly focused science goals. The Jet Propulsion Laboratory, Pasadena, CA, developed and manages and Mars Pathfinder mission for NASA's Office of Space Science, Washington, D.C. JPL is an operating division of the California Institute of Technology (Caltech). The Imager for Mars Pathfinder (IMP) was developed by the University of Arizona Lunar and Planetary Laboratory under contract to JPL. Peter Smith is the Principal Investigator. Photojournal note: Sojourner spent 83 days of a planned seven-day mission exploring the Martian terrain, acquiring images, and taking chemical, atmospheric and other measurements. The final data transmission received from Pathfinder was at 10:23 UTC on September 27, 1997. Although mission managers tried to restore full communications during the following five months, the successful mission was terminated on March 10, 1998.
https://photojournal.jpl.nasa.gov/catalog/PIA05720	/content/Nasa_Mars_Images/PIA05720_modest.jpg	Spirit's Extended-Mission Destination	The drive route planned for NASA's Mars Exploration Rover Spirit during its extended mission is represented by the green line in this traverse map. The gold line traces the path Spirit drove during its prime mission of 90 sols.One objective for the rover's extended mission is to continue eastward to reach the high ground named "Columbia Hills," still about 2 kilometers (1.2 miles) away at the beginning of the extended mission. The base image for this map was taken from orbit by NASA's Mars Global Surveyor. The entire area is within Gusev Crater.
https://photojournal.jpl.nasa.gov/catalog/PIA20756	/content/Nasa_Mars_Images/PIA20756_modest.jpg	Blue dots on this map indicate sites of recurring slope lineae (RSL) in part of the Valles Marineris canyon network on Mars, from NASA's Mars Reconnaissance Orbiter.	Blue dots on this map indicate sites of recurring slope lineae (RSL) in part of the Valles Marineris canyon network on Mars. RSL are seasonal dark streaks regarded as the strongest evidence for the possibility of liquid water on the surface of modern Mars. The area mapped here has the highest density of known RSL on the Red Planet.The RSL were identified by repeated observations of the sites using the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. Map colors represent elevation, where red is high and blue is low. Valles Marineris is the largest canyon system in the solar system. The region shown here includes Melas Chasma and Coprates Chasma, in the central and eastern portions of Valles Marineris. The mapped area extends about 1,500 miles (2,400 kilometers) east to west and about 280 miles (450 kilometers) north to south, at latitudes from 9 to 17 degrees south of Mars' equator. The base map uses data from the Mars Orbiter Camera and Mars Orbiter Laser Altimeter of NASA's Mars Global Surveyor mission.RSL extend downslope during a warm season, fade in the colder part of the year, and repeat the process in a subsequent Martian year. A study of 41 RSL sites in this canyon area, published July 7, 2016, provides support for the notion that significant amounts of near-surface water can be found on modern Mars, though the work also indicates that puzzles remain unsolved in understanding how these seasonal features form. Each site includes anywhere from a few to more than 1,000 individual "lineae." The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.
https://photojournal.jpl.nasa.gov/catalog/PIA07052	/content/Nasa_Mars_Images/PIA07052_modest.jpg	NASA's Mars Global Surveyor shows a typical north polar scarp and associated dark, windblown sand dunes on Mars. Layers of material, possibly dust and ice, are exposed by the scarp.	16 November 2004This 1.6 meters (~5 feet) per pixel Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a typical north polar scarp and associated dark, windblown sand dunes. Layers of material -- possibly dust and ice -- are exposed by the scarp. The small white patches in the image are remnants of seasonal frost. When this north polar image was acquired in late September 2004, most of the polar frost had sublimed away. This image is located near 85.1°N, 210.8°W. The scene covers an area approximately 3 km (1.9 mi) across, and is illuminated by sunlight from the lower left.
https://photojournal.jpl.nasa.gov/catalog/PIA24008	/content/Nasa_Mars_Images/PIA24008_modest.jpg	This image from NASA's Mars Odyssey shows Lucus Planum. The surface in this image has been eroded by the wind to form features called yardangs.	Context imageToday's VIS image is located on Lucus Planum. The surface in this image has been eroded by the wind to form features called yardangs. Yardangs form in a poorly cemented material where the wind cuts linear valleys, removing some of the material and leaving parallel ridges behind. The direction of the ridge/valley is aligned with the wind direction. The dominant wind direction in this region is along a northeast/southwest trend; however, other wind directions can occur within a localized region. There is a circular feature in the lower left side of the image. This is likely the remains of a crater. Meteor impacts melt the surface and subsurface, creating a harder material then the surrounding surfaces. The remnant of the crater are still visible due to being a more resistant material.Orbit Number: 81740 Latitude: -1.61604 Longitude: 187.227 Instrument: VIS Captured: 2020-05-18 18:55Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA15290	/content/Nasa_Mars_Images/PIA15290_modest.jpg	NASA's Mars Odyssey spacecraft captured this image on Feb. 19, 2012, 10 years to the day after the camera recorded its first view of Mars. This image covers an area in the Nepenthes Mensae region north of the Martian equator.	The Thermal Emission Imaging System (THEMIS) camera on NASA's Mars Odyssey spacecraft has completed an unprecedented full decade of observing Mars from orbit. THEMIS captured this image on Feb. 19, 2012, 10 years to the day after the camera recorded its first view of Mars. This image covers an area 11 by 32 miles (19 by 52 kilometers) in the Nepenthes Mensae region north of the Martian equator. The view depicts a knobby landscape where the southern highlands are breaking up as the terrain descends into the northern lowlands.Odyssey, launched in 2001, has worked at Mars longer than any mission in history. NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Mars Odyssey mission for NASA's Science Mission Directorate, Washington. THEMIS was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Philip Christensen at ASU. Lockheed Martin Space Systems in Denver built the spacecraft. JPL and Lockheed Martin collaborate on operating it. JPL is a division of the California Institute of Technology in Pasadena.For more information about Mars Odyssey, visit http://mars.jpl.nasa.gov/odyssey. For more about THEMIS, see http://themis.asu.edu/.
https://photojournal.jpl.nasa.gov/catalog/PIA13022	/content/Nasa_Mars_Images/PIA13022_modest.jpg	This image from NASA's 2001 Mars Odyssey shows some of the effects that wind action has on the surface of Mars. This image is located near Zephyria Planum. Winds in the region have eroded and etched the surface materials.	Context imageThis VIS image shows some of the effects that wind action has on the surface of Mars. This image is located near Zephyria Planum. Winds in the region have eroded and etched the surface materials.Orbit Number: 36112 Latitude: -5.42819 Longitude: 154.63 Instrument: VIS Captured: 2010-02-03 17:38Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA08045	/content/Nasa_Mars_Images/PIA08045_modest.jpg	NASA's Mars Global Surveyor shows the edge of a trough, which is part of a large pit crater complex in Noachis Terra on Mars. This type of trough forms through the collapse of surface materials into the subsurface, beginning as individual pit craters.	6 April 2006This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows the edge (running diagonally from the lower left to the upper right) of a trough, which is part of a large pit crater complex in Noachis Terra. This type of trough forms through the collapse of surface materials into the subsurface, and often begins as a series of individual pit craters. Over time, continued collapse increases the diameter of individual pits until finally, adjacent pits merge to form a trough such as the one captured in this image. The deep shadowed area is caused in part by an overhang; layered rock beneath this overhang is less resistant to erosion, and thus has retreated tens of meters backward, beneath the overhang. A person could walk up inside this "cave" formed by the overhanging layered material.Location near: 47.0°S, 355.7°W Image width: ~3 km (~1.9 mi) Illumination from: upper left Season: Southern Summer
https://photojournal.jpl.nasa.gov/catalog/PIA18829	/content/Nasa_Mars_Images/PIA18829_modest.jpg	The objective of this observation from NASA's Mars Reconnaissance Orbiter is to examine a light-toned deposit in a region of what is called 'chaotic terrain' at the base of the Valles Marineris canyon system.	Map Projected Browse ImageClick on the image for larger versionThe objective of this observation is to examine a light-toned deposit in a region of what is called "chaotic terrain" at the base of the Valles Marineris canyon system.The deposit displays a rough surface, in contrast to the smoothness of the surrounding area. Some parts of the surface appear as if they were eroded by a fluid flowing north and south, or perhaps sculpted by the wind. This area is also visible in a Context Camera image (P04_002747_1736). This deposit may be related to interior layered deposits in the Valles Marineris where it's been suggested to have formed in an ancient lake.This caption is based on the original science rationale.HiRISE is one of six instruments on NASA's Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.
https://photojournal.jpl.nasa.gov/catalog/PIA09509	/content/Nasa_Mars_Images/PIA09509_modest.jpg	Plains West of Viking Lander 2	Image PSP_001435_2280 was taken by the High Resolution Imaging Science Experiment (HiRISE) camera onboard the Mars Reconnaissance Orbiter spacecraft on November 16, 2006. The complete image is centered at 47.7 degrees latitude, 134.0 degrees East longitude. The range to the target site was 316.0 km (197.5 miles). At this distance the image scale is 31.6 cm/pixel (with 1 x 1 binning) so objects ~95 cm across are resolved. The image shown here has been map-projected to 25 cm/pixel and north is up. The image was taken at a local Mars time of 3:11 PM and the scene is illuminated from the west with a solar incidence angle of 49 degrees, thus the sun was about 41 degrees above the horizon. At a solar longitude of 136.2 degrees, the season on Mars is Northern Summer.NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, is the prime contractor for the project and built the spacecraft. The High Resolution Imaging Science Experiment is operated by the University of Arizona, Tucson, and the instrument was built by Ball Aerospace and Technology Corp., Boulder, Colo.
https://photojournal.jpl.nasa.gov/catalog/PIA13727	/content/Nasa_Mars_Images/PIA13727_modest.jpg	The bright areas in this image from NASA's Mars Reconnaissance Orbiter are covered by carbon dioxide frost, and the 'swiss cheese' terrain typical of the south polar residual cap covers much of the imaged area.	This 4 kilometer diameter feature near the edge of the South polar residual cap was recognized in Mariner 9 and Viking Orbiter images taken in the 1970s, but its origin could not be inferred. It was therefore targeted for HiRISE stereo imaging.The bright areas in this image are covered by carbon dioxide frost, and the "swiss cheese" terrain typical of the south polar residual cap covers much of the imaged area. The dark walls of the circular depression do not have as much frost on them, and are fractured in a polygonal pattern. Apparently the surface of the walls has been extensively modified by thermal expansion and contraction of water ice.It also appears that the "swiss cheese" terrain of the residual cap has buried the floor of the circular depression, as well as the terrain surrounding the feature, making it difficult to infer the origin of this depression. Its circular symmetry is consistent with an impact origin, but there is no evidence of a crater rim or ejecta (perhaps because they have been buried). The depression may have formed by collapse, but there is little evidence of extensional fractures that would be expected around a collapse pit. Analysis of HiRISE stereo data may help the interpretation of this feature.NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the spacecraft. The High Resolution Imaging Science Experiment is operated by the University of Arizona, Tucson, and the instrument was built by Ball Aerospace & Technologies Corp., Boulder, Colo.Originally released October 3, 2007
https://photojournal.jpl.nasa.gov/catalog/PIA00300	/content/Nasa_Mars_Images/PIA00300_modest.jpg	Shown here is a digital mosaic of Olympus Mons, the largest known volcano in the Solar System, as seen by NASA's Viking Orbiter 1. Much of the plains surrounding the volcano are covered by the ridged and grooved 'aureole' of Olympus Mons.	Shown here is a digital mosaic of Olympus Mons, the largest known volcano in the Solar System. It is 27 kilometers high, over 600 kilometers at the base, and is surrounded by a well-defined scarp that is up to 6 km high. Lava flows drape over the scarp in places. Much of the plains surrounding the volcano are covered by the ridged and grooved 'aureole' of Olympus Mons. The origin of the aureole is controversial, but may be related to gravity sliding off of the flanks of an ancestral volcano. The summit caldera (central depression) is almost 3 km deep and 25 km across. It probably formed from recurrent collapse following drainage of magma resulting from flank eruptions.
https://photojournal.jpl.nasa.gov/catalog/PIA22930	/content/Nasa_Mars_Images/PIA22930_modest.jpg	These two thumbnail images, with the ghostly dot of a faint Sun near the middle of each, are the last images NASA's Opportunity rover took on Mars.	Figure 1Figure 2 These two thumbnail images, with the ghostly dot of a faint Sun near the middle of each, are the last images NASA's Opportunity rover took on Mars as a dust storm darkened the sky.These images from the left and right eyes of the Panoramic Camera (Pancam) were used to estimate how opaque the atmosphere was (a measurement known as "tau") on Opportunity's final day of operation. With a tau of about 10.8 on that day, scientists knew that only a tiny amount of sunlight was getting through the dust. The left and right Pancam eyes had camera filters that typically help with geological investigations: 440-nanometer (deep blue) and 750-nanometer (red to infrared) filters, respectively. These filters would normally result in overexposed images, but with such weak sunlight, scientists were able to point the Pancams at the Sun and determine the tau.The left Pancam image (Figure 1) has more wavy gradations. In the right Pancam image (Figure 2), the Sun appears as the larger whitish feature in the middle of the frame.These images were taken in Perseverance Valley around 9:33 a.m. PDT (12:33 a.m. EDT) on June 10, 2018 (the 5,111st Martian day, or sol, of Opportunity's mission). These thumbnails were not the last images transmitted by the rover: The last image sent (PIA22929) is a partial full-frame image of a dark sky. While full-frame image versions are typically sent after thumbnails, the full-frame versions of these images with faint spots of sun were never transmitted.NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Exploration Rover Project for NASA's Science Mission Directorate in Washington.For more information about Opportunity, visit https://www.nasa.gov/rovers and https://mars.nasa.gov/mer.
https://photojournal.jpl.nasa.gov/catalog/PIA03053	/content/Nasa_Mars_Images/PIA03053_modest.jpg	These windstreaks are located on the downwind side of impact craters located in Syrtis Major on Mars as seen by NASA's 2001 Mars Odyssey spacecraft.	Context image for PIA03053 Syrtis Major WindstreaksThese windstreaks are located on the downwind side of impact craters located in Syrtis Major.Image information: VIS instrument. Latitude 0.1N, Longitude 70.1E. 17 meter/pixel resolution.Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA04889	/content/Nasa_Mars_Images/PIA04889_modest.jpg	This image from NASA's 2001 Mars Odyssey released on Nov 25, 2003 shows abundant dust devil tracks on Mars. Dark streaks across much of the surface are formed when dust devils sweep up the dust and reveal the darker underlying terrain.	Released 25 November 2003Abundant dust devil tracks dominate the scene in this THEMIS visible image. The dark streaks across much of the surface are formed when dust devils sweep up the dust and reveal the darker underlying terrain. Notice how the dust devil tracks are continuous over changes in topography (e.g. crater rims) and how the lengths and thicknesses of the tracks vary. This indicates that the dust devils vary in their size and duration.Image information: VIS instrument. Latitude -61.4, Longitude 120.2 East (239.8 West). 19 meter/pixel resolution.Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA03547	/content/Nasa_Mars_Images/PIA03547_modest.jpg	NASA's Mars Global Surveyor shows an ancient lava flow surface near the volcano, Ascraeus Mons on Mars. The volcanic material has been completely covered by thick accumulations of dust.	17 November 2005This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows an ancient lava flow surface near the volcano, Ascraeus Mons. The volcanic material has been completely covered by thick accumulations of dust. An earlier accumulation of dust or ash was eroded by wind to form the sharp, nearly triangular hills and ridges seen on top of the flow surfaces. A small impact crater with bouldery ejecta has formed on top of the old flow material in the southern (lower) quarter of the image.Location near: 8.5°N, 110.5°W Image width: width: ~3 km (~1.9 mi) Illumination from: lower left Season: Northern Autumn
https://photojournal.jpl.nasa.gov/catalog/PIA13411	/content/Nasa_Mars_Images/PIA13411_modest.jpg	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.	Context imageBy high summer, the extensive dune fields of the north polar region are completely defrosted and the number and variety of dunes are readily visible.Orbit Number: 38652 Latitude: 77.8461 Longitude: 311.187 Instrument: VIS Captured: 2010-08-31 22:31Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA21157	/content/Nasa_Mars_Images/PIA21157_modest.jpg	This image captured by NASA's 2001 Mars Odyssey spacecraft shows a small portion of Gigas Sulci.	Context image Today's VIS image shows a small portion of Gigas Sulci. Located in the Tharsis region, these small linear ridges follow two trends at angle to each other, one toward the upper left corner and the other generally across from right to left. Small dunes are located between the ridges. The ridges were most likely formed by tectonic activity.Orbit Number: 65422 Latitude: 9.32915 Longitude: 231.265 Instrument: VIS Captured: 2016-09-12 16:56Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA18720	/content/Nasa_Mars_Images/PIA18720_modest.jpg	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.	Context imageLocated on the floor of an unnamed crater in Terra Sirenum, the crater in the center of the VIS image has numerous gullies on the inner rim. An ejecta deposit from a near by crater is visible at the bottom on this image.Orbit Number: 56451 Latitude: -38.1315 Longitude: 224.023 Instrument: VIS Captured: 2014-09-04 22:05Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA10878	/content/Nasa_Mars_Images/PIA10878_modest.jpg	This image from NASA's Mars Odyssey shows a region of Mars' north polar dunes with less dune materials than other portions of the north polar erg.	Context image for PIA10878Polar DunesThis region of north polar dunes has less dune materials than other portions of the north polar erg. This allows the base that the dunes are moving across to be observed.Image information: VIS instrument. Latitude 77.9N, Longitude 116.7E. 20 meter/pixel resolution.Please see the THEMIS Data Citation Note for details on crediting THEMIS images.Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA10987	/content/Nasa_Mars_Images/PIA10987_modest.jpg	This anaglyph, acquired by NASA's Phoenix Lander shows a stereoscopic 3D view of a trench informally called 'Snow White' dug by Phoenix's Robotic Arm. 3D glasses are necessary to view this image.	This anaglyph, acquired by NASA's Phoenix Lander's Surface Stereo Imager on Sol 36, the 36th Martian day of the mission (July 1, 2008), shows a stereoscopic 3D view of a trench informally called "Snow White" dug by Phoenix's Robotic Arm. Phoenix's solar panel is seen in the bottom right corner of the image.The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.Photojournal Note: As planned, the Phoenix lander, which landed May 25, 2008 23:53 UTC, ended communications in November 2008, about six months after landing, when its solar panels ceased operating in the dark Martian winter.
https://photojournal.jpl.nasa.gov/catalog/PIA25992	/content/Nasa_Mars_Images/PIA25992_modest.jpg	This image from NASA's Mars Odyssey shows a portion of Cyane Sulci.	Context imageThe top of today's VIS image shows a portion of Cyane Sulci. Located to the northeast of Olympus Mons, Cyane Sulci is a complexly fractured region of material inundated on its margins by volcanic flows.Orbit Number: 94217 Latitude: 22.1596 Longitude: 232.704 Instrument: VIS Captured: 2023-03-12 03:17Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA07282	/content/Nasa_Mars_Images/PIA07282_modest.jpg	NASA's Mars Global Surveyor shows dark, windblown sand dunes in the north polar region of Mars. A vast sea of sand dunes nearly surrounds the north polar cap during the northern summer in December 2004.	20 January 2004This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image, acquired during northern summer in December 2004, shows dark, windblown sand dunes in the north polar region of Mars. A vast sea of sand dunes nearly surrounds the north polar cap. These landforms are located near 80.3°N, 144.1°W. Light-toned features in the image are exposures of the substrate that underlies the dune field. The image covers an area about 3 km (1.9 mi) wide and is illuminated by sunlight from the lower left.
https://photojournal.jpl.nasa.gov/catalog/PIA09577	/content/Nasa_Mars_Images/PIA09577_modest.jpg	Sinuous Ridges in Argyre Basin	This HiRISE image covers a portion of a sinuous ridge on the floor of Argyre Basin in the southern hemisphere of Mars (55.0 degrees south, 319.2 east). The ridge is one of a number of similar ridges that split and rejoin as they wind across the floor of the basin and around hills and mountains. It is unclear what process is responsible for formation of the ridges, but glacial, coastal, and fluvial processes have all been suggested.For example, they may represent ancient coastal shorelines, sediments deposited in a river flowing under glacial ice, or an ancient river bed that has been left standing in relief as surrounding, probably finer grained sediments were subsequently eroded away.The HiRISE image shows that the sediments forming the ridge include many large boulders that are often 1-2 meters or more in diameter. In addition, the sediments appear to occur in crude layers in a few locations. Such characteristics hold important clues to the process(es) responsible for formation of the ridge.For example, if the ridge is the deposit formed by an ancient river then it may be difficult to account for the transport of so many large boulders.Observation GeometryImage PSP_001508_1245 was taken by the High Resolution Imaging Science Experiment (HiRISE) camera onboard the Mars Reconnaissance Orbiter spacecraft on 21-Nov-2006. The complete image is centered at -55.0 degrees latitude, 319.2 degrees East longitude. The range to the target site was 251.0 km (156.9 miles). At this distance the image scale is 50.2 cm/pixel (with 2 x 2 binning) so objects ~151 cm across are resolved. The image shown here has been map-projected to 50 cm/pixel and north is up. The image was taken at a local Mars time of 03:47 PM and the scene is illuminated from the west with a solar incidence angle of 86 degrees, thus the sun was about 4 degrees above the horizon. At a solar longitude of 138.9 degrees, the season on Mars is Northern Summer.NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, is the prime contractor for the project and built the spacecraft. The High Resolution Imaging Science Experiment is operated by the University of Arizona, Tucson, and the instrument was built by Ball Aerospace and Technology Corp., Boulder, Colo.
https://photojournal.jpl.nasa.gov/catalog/PIA04199	/content/Nasa_Mars_Images/PIA04199_modest.jpg	NASA's Mars Global Surveyor shows a patch of frost-covered, dark sand that, at the time the picture was acquired in June 2005, had begun to defrost. The frost is carbon dioxide.	2 September 2005This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a patch of frost-covered, dark sand that, at the time the picture was acquired in June 2005, had begun to defrost. The frost is carbon dioxide. Dunes and other patches of sand are usually the first polar features to develop dark spots as the frost begins to sublime away.Location near: 78.9°S, 80.2°W Image width: width: ~3 km (~1.9 mi) Illumination from: upper left Season: Southern Spring
https://photojournal.jpl.nasa.gov/catalog/PIA16337	/content/Nasa_Mars_Images/PIA16337_modest.jpg	This image NASA's 2001 Mars Odyssey spacecraft shows part of the dune field on the floor of Brashear Crater.	Context imageToday's VIS image shows part of the dune field on the floor of Brashear Crater.Orbit Number: 48153 Latitude: -53.3619 Longitude: 240.455 Instrument: VIS Captured: 2012-10-22 00:28Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA11787	/content/Nasa_Mars_Images/PIA11787_modest.jpg	This cylindrical image from NASA's Mars Exploration Rover Opportunity shows the site within an alcove called 'Duck Bay' in the western portion of Victoria Crater taken in April, 2008.	Left-eye view of a color stereo pair for PIA11787Right-eye view of a color stereo pair for PIA11787NASA Mars Exploration Rover Opportunity used its navigation camera to take the images combined into this stereo, full-circle view of the rover's surroundings on the 1,506th through 1,510th Martian days, or sols, of Opportunity's mission on Mars (April 19-23, 2008). North is at the top.This view combines images from the left-eye and right-eye sides of the navigation camera. It appears three-dimensional when viewed through red-blue glasses with the red lens on the left. The site is within an alcove called "Duck Bay" in the western portion of Victoria Crater. Victoria Crater is about 800 meters (half a mile) wide. Opportunity had descended into the crater at the top of Duck Bay 7 months earlier. By the time the rover acquired this view, it had examined rock layers inside the rim.Opportunity was headed for a closer look at the base of a promontory called "Cape Verde," the cliff at about the 2-o'clock position of this image, before leaving Victoria. The face of Cape Verde is about 6 meters (20 feet) tall. Just clockwise from Cape Verde is the main bowl of Victoria Crater, with sand dunes at the bottom. A promontory called "Cabo Frio," at the southern side of Duck Bay, stands near the 6-o'clock position of the image.This view is presented as a cylindrical-perspective projection with geometric seam correction.
https://photojournal.jpl.nasa.gov/catalog/PIA08493	/content/Nasa_Mars_Images/PIA08493_modest.jpg	These streamlined islands are located in Mangala Vallis on Mars as seen by NASA's 2001 Mars Odyssey spacecraft.	Context image for PIA08493Streamlined IslandsThese streamlined islands are located in Mangala Vallis.Image information: VIS instrument. Latitude -15.2N, Longitude 210.9E. 18 meter/pixel resolution.Please see the THEMIS Data Citation Note for details on crediting THEMIS images. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA14367	/content/Nasa_Mars_Images/PIA14367_modest.jpg	The windstreaks in this image of Syrtis Major Planum indicate winds blowing from the northeast. This image is from NASA's 2001 Mars Odyssey spacecraft.	Context imageThe windstreaks in this VIS image of Syrtis Major Planum indicate winds blowing from the northeast.Orbit Number: 41980 Latitude: -0.821278 Longitude: 70.4895 Instrument: VIS Captured: 2011-06-01 21:35Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA19033	/content/Nasa_Mars_Images/PIA19033_modest.jpg	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 the margin of the north polar cap.	Context imageThe THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of the surface not easily identified in a single band image. Today's false color image shows the margin of the north polar cap.Orbit Number: 4211 Latitude: 80.074 Longitude: 43.0149 Instrument: VIS Captured: 2002-11-26 05:54Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA16261	/content/Nasa_Mars_Images/PIA16261_modest.jpg	Image captured by NASA's 2001 Mars Odyssey spacecraft shows the eastern flank of Arsia Mons midway between the summit of the volcano and the surrounding plains.	Context imageThis VIS image shows the eastern flank of Arsia Mons midway between the summit of the volcano and the surrounding plains. Note the small linear fractures which trend towards the top of the image; these fractures encircle the volcano.Orbit Number: 49227 Latitude: -9.4723 Longitude: 241.774 Instrument: VIS Captured: 2013-01-18 09:34 Please see the THEMIS Data Citation Note for details on crediting THEMIS images.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.
https://photojournal.jpl.nasa.gov/catalog/PIA14763	/content/Nasa_Mars_Images/PIA14763_modest.jpg	This is the highest-resolution view that the MAHLI camera on NASA's Mars rover Curiosity acquired of the top of a rock called 'Bathurst Inlet'; the rock is dark gray and is so fine-grained that MAHLI cannot resolve grains or crystals in it.	This is the highest-resolution view that the Mars Hand Lens Imager (MAHLI) on NASA's Mars rover Curiosity acquired of the top of a rock called "Bathurst Inlet." The rover's arm held the camera with the lens only about 1.6 inches (4 centimeters) from the rock. The view covers an area roughly 1.3 inches by 1 inch (3.3 centimeters by 2.5 centimeters). At this distance, the camera provides resolution of 21 microns per pixel. For comparison, the typical resolution in images from the Microscopic Imager cameras on earlier-generation Mars rovers Spirit and Opportunity is about 31 microns per pixel.This is a merged-focus view combining information from a set of eight images taken by MAHLI at different focus settings during Curiosity's 54th Martian day, or sol (Sept. 30, 2012). A context image of the top of Bathurst Inlet, taken by MAHLI positioned about seven times farther from the rock (see PIA14762). Curiosity also examined Bathurst Inlet on the same sol with the other science instrument at the end of the rover's arm, the Alpha Particle X-Ray Spectrometer. The Bathurst Inlet rock is dark gray and appears to be so fine-grained that MAHLI cannot resolve grains or crystals in it. This means that the grains or crystals, if there are any at all, are smaller than about 80 microns in size. Some windblown sand-sized grains or dust aggregates have accumulated on the surface of the rock. MAHLI can do focus merging onboard. The full-frame versions of the eight separate images that were combined into this view were not even returned to Earth -- just the thumbnail versions. Merging the images onboard reduces the volume of data that needs to be downlinked to Earth. JPL manages the Mars Science Laboratory/Curiosity for NASA's Science Mission Directorate in Washington. The rover was designed, developed and assembled at JPL, a division of the California Institute of Technology in Pasadena.For more about NASA's Curiosity mission, visit: http://www.jpl.nasa.gov/msl, http://www.nasa.gov/mars, and http://marsprogram.jpl.nasa.gov/msl.
https://photojournal.jpl.nasa.gov/catalog/PIA16080	/content/Nasa_Mars_Images/PIA16080_modest.jpg	This graph shows readings for atmospheric pressure at the landing site of NASA's Curiosity rover. The data were obtained by Curiosity's Rover Environmental Monitoring Station from Aug. 15 to Aug. 18, 2012.	This graph shows readings for atmospheric pressure at the landing site of NASA's Curiosity rover. The data were obtained by Curiosity's Rover Environmental Monitoring Station from Aug. 15 to Aug. 18, 2012. The fluctuations between about 690 Pascals (6.9 millibars) and 780 Pascals (7.8 millibars) shows that the atmosphere is similar to predicated models.
https://photojournal.jpl.nasa.gov/catalog/PIA05664	/content/Nasa_Mars_Images/PIA05664_modest.jpg	This image from NASA's 2001 Mars Odyssey released on March 30, 2004 shows an area in Elysium Planitia near Isidis Planitia on Mars. The channel formation is surface controlled, while the lava-tube creation is mainly structurally controlled.	Released 30 March 2004The Odyssey spacecraft has completed a full Mars year of observations of the red planet. For the next several weeks the Image of the Day will look back over this first mars year. It will focus on four themes: 1) the poles - with the seasonal changes seen in the retreat and expansion of the caps; 2) craters - with a variety of morphologies relating to impact materials and later alteration, both infilling and exhumation; 3) channels - the clues to liquid surface flow; and 4) volcanic flow features. While some images have helped answer questions about the history of Mars, many have raised new questions that are still being investigated as Odyssey continues collecting data as it orbits Mars.The image shows an area in Elysium Planitia near Isidis Planitia. It was acquired May 17, 2002 during northern spring. The local time is 3:30pm. The image shows channels and collapsed lava-tubes. The channel formation is surface controlled, while the lava-tube creation is mainly structurally controlled.Image information: VIS instrument. Latitude 21.6, Longitude 125.5 East (234.5 West). 19 meter/pixel resolution.Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.