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Victoria Crater' at Meridian …
title Victoria Crater' at Meridiani Planum
date 10.06.2006
description This image from the High Resolution Imaging Science Experiment on NASA's Mars Reconnaissance Orbiter shows "Victoria crater," an impact crater at Meridiani Planum, near the equator of Mars. The crater is approximately 800 meters (half a mile) in diameter. It has a distinctive scalloped shape to its rim, caused by erosion and downhill movement of crater wall material. Layered sedimentary rocks are exposed along the inner wall of the crater, and boulders that have fallen from the crater wall are visible on the crater floor. The floor of the crater is occupied by a striking field of sand dunes. Since January 2004, the Mars Exploration Rover Opportunity has been operating at Meridiani Planum. Five days before this image was taken, Opportunity arrived at the rim of Victoria crater, after a drive of more than 9 kilometers (over 5 miles). The rover can be seen in this image, at roughly the "ten o'clock" position along the rim of the crater. This view is a portion of an image taken by the High Resolution Imaging Science Experiment (HiRISE) camera onboard the Mars Reconnaissance Orbiter spacecraft on Oct. 3, 2006. The complete image is centered at minus7.8 degrees latitude, 279.5 degrees East longitude. The range to the target site was 297 kilometers (185.6 miles). At this distance the image scale is 29.7 centimeters (12 inches) per pixel (with 1 x 1 binning) so objects about 89 centimeters (35 inches) across are resolved. The image shown here has been map-projected to 25 centimeters (10 inches) per pixel and north is up. The image was taken at a local Mars time of 3:30 PM and the scene is illuminated from the west with a solar incidence angle of 59.7 degrees, thus the sun was about 30.3 degrees above the horizon. At a solar longitude of 113.6 degrees, the season on Mars is northern summer. This is an enhanced-color view generated from images acquired by the HiRISE camera using its red filter and blue-green filter. Images from the High Resolution Imaging Science Experiment and additional information about the Mars Reconnaissance Orbiter are available online at: http://www.nasa.gov/mroor http://HiRISE.lpl.arizona.edu. For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. JPL, 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 is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace & Technologies Corporation and is operated by the University of Arizona. Image Credit: NASA/JPL/UA
Martian Eclipses: Deimos and …
Title Martian Eclipses: Deimos and Phobos
Description [figure removed for brevity, see original site] [figure removed for brevity, see original site] [figure removed for brevity, see original site] Deimos [figure removed for brevity, see original site] Phobos This panel combines the first photographs of solar eclipses by Mars' two moons. The panoramic camera on NASA's Mars Exploration Rover Opportunity captured the images as the first in a planned series of eclipse observations by Opportunity and Spirit. The Deimos image was taken at 03:04 Universal Time on March 4, 2004. This irregularly shaped moon is only 15 kilometers (9 miles) across in its longest dimension. It appears as just a speck in front of the disc of the Sun. The Phobos image was taken as that moon grazed the edge of the solar disc at 02:46 Universal Time on March 7, 2004. Phobos is 27 kilometers (17 miles) in its longest dimension. Its apparent size relative to Deimos is even greater because it orbits much closer to Mars' surface than Deimos does.
Date 03.08.2004
Martian Moon Eclipses Sun, i …
Title Martian Moon Eclipses Sun, in Stages
Description This panel illustrates the transit of the martian moon Phobos across the Sun. It is made up of images taken by the Mars Exploration Rover Opportunity on the morning of the 45th martian day, or sol, of its mission. This observation will help refine our knowledge of the orbit and position of Phobos. Other spacecraft may be able to take better images of Phobos using this new information. This event is similar to solar eclipses seen on Earth in which our Moon passes in front of the Sun. The images were taken by the rover's panoramic camera.
Date 03.13.2004
Martian Sunsets More Than Ju …
Title Martian Sunsets More Than Just Pretty
Description This image shows the Sun as it appears on Mars throughout the day. Scientists monitor the dimming of the setting Sun to assess how much dust is in the martian atmosphere. The pictures were taken by the Mars Exploration Rover Spirit's panoramic camera.
Date 01.10.2004
Description Browse Image | Medium Image (129 kB) | Large (20.4 MB) Hi-Res (NASA's Planetary Photojournal) [ http://photojournal.jpl.nasa.gov/catalog/PIA08813 ]
Seasonal Trend in Water Vapo …
PIA07102
Sol (our sun)
Thermal Emission Spectromete …
Title Seasonal Trend in Water Vapor Seen from Orbit
Original Caption Released with Image The seasonal trend in the amount of water vapor in Mars' atmosphere, as observed by thermal emission spectrometer on NASA's Mars Global Surveyor orbiter, varies by latitude. This plot starts near the beginning of fall in the southern hemisphere for the year before the Mars Exploration Rover mission began and ends on August 30, 2004, slightly more than one martian year later. Purple represents no water while red represents about 50 precipitable micrometers, which is about 10,000 times less than on Earth. The units of time along the horizontal axis are given in longitude of the Sun (Ls) as measured in a Mars-centered coordinate system, a way to reflect the elliptical nature of Mars' orbit. On this scale, Mars is farthest from the Sun at about 74, which also corresponds to late fall in the southern hemisphere. During the period when Mars is farthest from the Sun, the migration of water vapor from the northern polar region combines with lowered atmospheric temperatures to produce conditions that allow formation of clouds such as seen in the image at PIA07105 [ http://photojournal.jpl.nasa.gov/catalog/PIA07105 ]. Opportunity is further north than Spirit is, so there is a distinct difference in the amount of water vapor available to form water-ice clouds over the two sites. To date, Spirit has not seen any discrete, cirrus-like clouds such as Opportunity has photographed. Although water vapor is expected to reach a maximum abundance for the Opportunity and Spirit sites near spring equinox (Ls 180 or about March 2005), the atmospheric temperatures will very likely have warmed sufficiently to prevent formation of the type of clouds that Opportunity has observed recently.
Looking into "London
PIA06383
Sol (our sun)
Microscopic Imager
Title Looking into "London
Original Caption Released with Image This mosaic image from the microscopic imager on the Mars Exploration Rover Opportunity shows the rock abrasion tool target, "London." The image was taken by the Mars Exploration Rover Opportunity on its 149th sol on Mars (June 24, 2004). Scientists "read" the geology of the image from bottom to top, with the youngest material pictured at the bottom of the image and the oldest material in the layers pictured at the top. Millimeter-scale layers run horizontally across the exposed surface, with two sliced sphere-like objects, or "blueberries" on the upper left and upper right sides of the impression. This material is similar to the evaporative material found in "Eagle Crater." However, the intense review of these layers in Endurance Crater is, in essence, deepening the water story authored by ancient Mars. In Eagle Crater, the effects of water were traced down a matter of centimeters. Endurance Crater's depth has allowed the tracing of water's telltale marks up to meters. Another process that significantly affects martian terrain is muddying the water story a bit. Although it is clear that the layers in Endurance were affected by water, it is also evident that Aeolian, or wind, processes have contributed to the makeup of the crater.
Martian Eclipses: Deimos and …
PIA05518
Panoramic Camera
Title Martian Eclipses: Deimos and Phobos
Original Caption Released with Image This panel combines the first photographs of solar eclipses by Mars' two moons. The panoramic camera on NASA's Mars Exploration Rover Opportunity captured the images as the first in a planned series of eclipse observations by Opportunity and Spirit. The Deimos image was taken at 03:04 Universal Time on March 4, 2004. This irregularly shaped moon is only 15 kilometers (9 miles) across in its longest dimension. It appears as just a speck in front of the disc of the Sun. The Phobos image was taken as that moon grazed the edge of the solar disc at 02:46 Universal Time on March 7, 2004. Phobos is 27 kilometers (17 miles) in its longest dimension. Its apparent size relative to Deimos is even greater because it orbits much closer to Mars' surface than Deimos does.
Martian Eclipses: Deimos and …
PIA05518
Panoramic Camera
Title Martian Eclipses: Deimos and Phobos
Original Caption Released with Image This panel combines the first photographs of solar eclipses by Mars' two moons. The panoramic camera on NASA's Mars Exploration Rover Opportunity captured the images as the first in a planned series of eclipse observations by Opportunity and Spirit. The Deimos image was taken at 03:04 Universal Time on March 4, 2004. This irregularly shaped moon is only 15 kilometers (9 miles) across in its longest dimension. It appears as just a speck in front of the disc of the Sun. The Phobos image was taken as that moon grazed the edge of the solar disc at 02:46 Universal Time on March 7, 2004. Phobos is 27 kilometers (17 miles) in its longest dimension. Its apparent size relative to Deimos is even greater because it orbits much closer to Mars' surface than Deimos does.
Martian Eclipses: Deimos and …
PIA05518
Panoramic Camera
Title Martian Eclipses: Deimos and Phobos
Original Caption Released with Image This panel combines the first photographs of solar eclipses by Mars' two moons. The panoramic camera on NASA's Mars Exploration Rover Opportunity captured the images as the first in a planned series of eclipse observations by Opportunity and Spirit. The Deimos image was taken at 03:04 Universal Time on March 4, 2004. This irregularly shaped moon is only 15 kilometers (9 miles) across in its longest dimension. It appears as just a speck in front of the disc of the Sun. The Phobos image was taken as that moon grazed the edge of the solar disc at 02:46 Universal Time on March 7, 2004. Phobos is 27 kilometers (17 miles) in its longest dimension. Its apparent size relative to Deimos is even greater because it orbits much closer to Mars' surface than Deimos does.
Martian Eclipses: Deimos and …
PIA05518
Panoramic Camera
Title Martian Eclipses: Deimos and Phobos
Original Caption Released with Image This panel combines the first photographs of solar eclipses by Mars' two moons. The panoramic camera on NASA's Mars Exploration Rover Opportunity captured the images as the first in a planned series of eclipse observations by Opportunity and Spirit. The Deimos image was taken at 03:04 Universal Time on March 4, 2004. This irregularly shaped moon is only 15 kilometers (9 miles) across in its longest dimension. It appears as just a speck in front of the disc of the Sun. The Phobos image was taken as that moon grazed the edge of the solar disc at 02:46 Universal Time on March 7, 2004. Phobos is 27 kilometers (17 miles) in its longest dimension. Its apparent size relative to Deimos is even greater because it orbits much closer to Mars' surface than Deimos does.
Martian Eclipses: Deimos and …
PIA05518
Panoramic Camera
Title Martian Eclipses: Deimos and Phobos
Original Caption Released with Image This panel combines the first photographs of solar eclipses by Mars' two moons. The panoramic camera on NASA's Mars Exploration Rover Opportunity captured the images as the first in a planned series of eclipse observations by Opportunity and Spirit. The Deimos image was taken at 03:04 Universal Time on March 4, 2004. This irregularly shaped moon is only 15 kilometers (9 miles) across in its longest dimension. It appears as just a speck in front of the disc of the Sun. The Phobos image was taken as that moon grazed the edge of the solar disc at 02:46 Universal Time on March 7, 2004. Phobos is 27 kilometers (17 miles) in its longest dimension. Its apparent size relative to Deimos is even greater because it orbits much closer to Mars' surface than Deimos does.
2 Years on Mars! Meridiani P …
PIA03691
Sol (our sun)
Mars Orbiter Camera
Title 2 Years on Mars! Meridiani Planum Features Investigated by the Rover, Opportunity
Original Caption Released with Image 24 January 2006 Two years ago, the Mars Exploration Rover, Opportunity, landed on Meridiani Planum. The rover marked its first Mars-year (687 Earth Days) anniversary in December 2005. Two pictures are shown here: the one on the right is the same as that on the left, except that key features have been labeled. Both pictures include a colored portion -- a 3-d (stereo) anaglyph which can be viewed using "3-d" glasses with a red left eye and a blue right eye. Figures 2 and 3 are MOC narrow angle non-stereo images. During the landing in January 2004, rockets were fired to slow the final descent, just before the inflated airbags (containing the folded-up lander and rover) were released. The rockets disturbed the sandy surface at the location labeled "blast effects." Following release, the airbags bounced and rolled until coming to rest inside Eagle Crater. The lander, in fact, can be seen as a bright spot near the center of Eagle Crater. Meanwhile, the jettisoned parachute and backshell landed to the southwest of Eagle, and the heatshield fell just southwest of Endurance Crater. Opportunity initially examined sedimentary rock outcrops and sandy, windblown regolith within Eagle Crater. Then it was driven by the rover team out of Eagle and on into Endurance Crater. By the end of 2004, Opportunity had left Endurance and was investigating the site where the heatshield impacted the surface. After that, the rover spent much of the year 2005 driving from the heatshield location down to the shallow Erebus Crater. Long-term plans call for driving Opportunity from Erebus to Victoria Crater, where a substantially thicker sequence of layered rock is expected to be found, relative to previous outcrops examined in the craters Endurance and Eagle. "Location near": 2.0°S, 5.6°W "Image width": 300 m scale bar = 984 ft "Illumination from": left
2 Years on Mars! Meridiani P …
PIA03691
Sol (our sun)
Mars Orbiter Camera
Title 2 Years on Mars! Meridiani Planum Features Investigated by the Rover, Opportunity
Original Caption Released with Image 24 January 2006 Two years ago, the Mars Exploration Rover, Opportunity, landed on Meridiani Planum. The rover marked its first Mars-year (687 Earth Days) anniversary in December 2005. Two pictures are shown here: the one on the right is the same as that on the left, except that key features have been labeled. Both pictures include a colored portion -- a 3-d (stereo) anaglyph which can be viewed using "3-d" glasses with a red left eye and a blue right eye. Figures 2 and 3 are MOC narrow angle non-stereo images. During the landing in January 2004, rockets were fired to slow the final descent, just before the inflated airbags (containing the folded-up lander and rover) were released. The rockets disturbed the sandy surface at the location labeled "blast effects." Following release, the airbags bounced and rolled until coming to rest inside Eagle Crater. The lander, in fact, can be seen as a bright spot near the center of Eagle Crater. Meanwhile, the jettisoned parachute and backshell landed to the southwest of Eagle, and the heatshield fell just southwest of Endurance Crater. Opportunity initially examined sedimentary rock outcrops and sandy, windblown regolith within Eagle Crater. Then it was driven by the rover team out of Eagle and on into Endurance Crater. By the end of 2004, Opportunity had left Endurance and was investigating the site where the heatshield impacted the surface. After that, the rover spent much of the year 2005 driving from the heatshield location down to the shallow Erebus Crater. Long-term plans call for driving Opportunity from Erebus to Victoria Crater, where a substantially thicker sequence of layered rock is expected to be found, relative to previous outcrops examined in the craters Endurance and Eagle. "Location near": 2.0°S, 5.6°W "Image width": 300 m scale bar = 984 ft "Illumination from": left
2 Years on Mars! Meridiani P …
PIA03691
Sol (our sun)
Mars Orbiter Camera
Title 2 Years on Mars! Meridiani Planum Features Investigated by the Rover, Opportunity
Original Caption Released with Image 24 January 2006 Two years ago, the Mars Exploration Rover, Opportunity, landed on Meridiani Planum. The rover marked its first Mars-year (687 Earth Days) anniversary in December 2005. Two pictures are shown here: the one on the right is the same as that on the left, except that key features have been labeled. Both pictures include a colored portion -- a 3-d (stereo) anaglyph which can be viewed using "3-d" glasses with a red left eye and a blue right eye. Figures 2 and 3 are MOC narrow angle non-stereo images. During the landing in January 2004, rockets were fired to slow the final descent, just before the inflated airbags (containing the folded-up lander and rover) were released. The rockets disturbed the sandy surface at the location labeled "blast effects." Following release, the airbags bounced and rolled until coming to rest inside Eagle Crater. The lander, in fact, can be seen as a bright spot near the center of Eagle Crater. Meanwhile, the jettisoned parachute and backshell landed to the southwest of Eagle, and the heatshield fell just southwest of Endurance Crater. Opportunity initially examined sedimentary rock outcrops and sandy, windblown regolith within Eagle Crater. Then it was driven by the rover team out of Eagle and on into Endurance Crater. By the end of 2004, Opportunity had left Endurance and was investigating the site where the heatshield impacted the surface. After that, the rover spent much of the year 2005 driving from the heatshield location down to the shallow Erebus Crater. Long-term plans call for driving Opportunity from Erebus to Victoria Crater, where a substantially thicker sequence of layered rock is expected to be found, relative to previous outcrops examined in the craters Endurance and Eagle. "Location near": 2.0°S, 5.6°W "Image width": 300 m scale bar = 984 ft "Illumination from": left
2 Years on Mars! Meridiani P …
PIA03691
Sol (our sun)
Mars Orbiter Camera
Title 2 Years on Mars! Meridiani Planum Features Investigated by the Rover, Opportunity
Original Caption Released with Image 24 January 2006 Two years ago, the Mars Exploration Rover, Opportunity, landed on Meridiani Planum. The rover marked its first Mars-year (687 Earth Days) anniversary in December 2005. Two pictures are shown here: the one on the right is the same as that on the left, except that key features have been labeled. Both pictures include a colored portion -- a 3-d (stereo) anaglyph which can be viewed using "3-d" glasses with a red left eye and a blue right eye. Figures 2 and 3 are MOC narrow angle non-stereo images. During the landing in January 2004, rockets were fired to slow the final descent, just before the inflated airbags (containing the folded-up lander and rover) were released. The rockets disturbed the sandy surface at the location labeled "blast effects." Following release, the airbags bounced and rolled until coming to rest inside Eagle Crater. The lander, in fact, can be seen as a bright spot near the center of Eagle Crater. Meanwhile, the jettisoned parachute and backshell landed to the southwest of Eagle, and the heatshield fell just southwest of Endurance Crater. Opportunity initially examined sedimentary rock outcrops and sandy, windblown regolith within Eagle Crater. Then it was driven by the rover team out of Eagle and on into Endurance Crater. By the end of 2004, Opportunity had left Endurance and was investigating the site where the heatshield impacted the surface. After that, the rover spent much of the year 2005 driving from the heatshield location down to the shallow Erebus Crater. Long-term plans call for driving Opportunity from Erebus to Victoria Crater, where a substantially thicker sequence of layered rock is expected to be found, relative to previous outcrops examined in the craters Endurance and Eagle. "Location near": 2.0°S, 5.6°W "Image width": 300 m scale bar = 984 ft "Illumination from": left
Mars Rocks Continue to Fasci …
PIA04168
Sol (our sun)
Microscopic Imager
Title Mars Rocks Continue to Fascinate
Original Caption Released with Image Proving once again that Mars is a complex and fascinating place, NASA's Opportunity rover has entered new terrain and is providing scientists with more discoveries and puzzles to solve. "One of the things we've been wondering," said principal investigator Steve Squyres, "is whether the rounded concretions we call 'blueberries' are the same everywhere. It turns out they're not. The berries are more numerous here, and some seem to be smaller than any we've ever seen." This microscopic image of a drill hole cut into a martian rock nicknamed "Ice Cream" by the rover's rock abrasion tool shows cross sections of round concretions 1 to 2 millimeters (0.04 to 0.08 inches) wide. Science team members are debating whether the grayish-looking smudges that are not as round are concretions or some other feature. Opportunity is now almost 4 kilometers (2.5 miles) south of "Endurance Crater," where the rover spent from May through December of 2004 reading the story of a watery past recorded in the martian rocks. After exiting "Endurance" on martian day, or sol, 316 (Dec. 13, 2004), Opportunity turned south and continued the trek across land where no human has trod, demonstrating that endurance is more than just a name. Opportunity took this mosaic of images with its microscopic imager on sol 546 (Aug. 6, 2005). The area shown is approximately 6 centimeters (2.4 inches) wide. The shaded portions on the left side of each quadrangle in the mosaic are silhouettes of the rover's robotic arm.
Sand-Strewn Summit of "Husba …
PIA04299
Sol (our sun)
Panoramic Camera
Title Sand-Strewn Summit of "Husband Hill" on Mars
Original Caption Released with Image Undulating bands of dark and light sand, sloping dunes, and scattered cobbles form an apron around a ridge of light-colored rock that stands in bold relief against distant plains, as viewed by NASA's "Spirit" rover from the top of "Husband Hill" on Mars. "The view of the summit is spectacular where we are right now," said geologist Larry Crumpler, with the New Mexico Museum of Natural History and Science, Albuquerque. From here, Spirit is looking north-northeast en route to examining more of the local geology of the "Columbia Hills" in Gusev Crater. A few days after taking this picture, Spirit investigated the small, sinuous drifts on the left, located north-northeast of the rover's position in this image. The last previous time Spirit examined a drift was on the rim of "Bonneville Crater" almost 500 martian days, or sols, ago, in March 2004. The largest light-colored rock in the foreground is nicknamed "Whittaker." The cliff beyond it and slightly to the left is nicknamed "Tenzing." The highest rock on the ridge ahead has been dubbed "Hillary." Science team members selected the nicknames in honor of the earliest climbers to scale Mount Everest on Earth. This view covers approximately 50 degrees of the compass from left to right. It is a mosaic assembled from frames Spirit took with the panoramic camera on sol 603 (Sept. 13, 2005). It was taken through a blue (430-nanometer) filter and is presented as a cylindrical projection.
Hills Still a Distant Goal f …
PIA05073
Sol (our sun)
Panoramic Camera
Title Hills Still a Distant Goal for Spirit
Original Caption Released with Image NASA's Mars Exploration Rover Spirit took this grey-scale panoramic camera image on sol 100, April 14, 2004. It captures Spirit's future destination at the highlands informally named "Columbia Hills". In this image, the hills are approximately 2.4 kilometers (1.5 miles) to the southeast. Scientists believe the hills may consist of different and potentially older rock units than the basalts that Spirit has observed so far.
A Dynamic Spirit Site
PIA05122
Sol (our sun)
Mars Orbiter Camera
Title A Dynamic Spirit Site
Original Caption Released with Image 5 January 2004 Two Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) images acquired before the spectacular January 2004 landing of the Mars Exploration Rover (MER-A), Spirit, show the area where the lander is currently believed to have touched down. The identification of the area shown in the two pictures above is based on the pictures acquired by Spirit's descent imaging system just before landing. The lower picture was obtained by MGS MOC on 22 July 2003, the upper picture was acquired less than a month ago on 10 December 2003. What is exciting about these two pictures is the differences in the patterns of dark, squiggly streaks. These streaks are believed to have been caused by the removal of bright dust by large, passing dust devils. Comparison of the picture from July 2003 with that of December 2003 show that a different dark streak pattern developed over a period of less than 5 months. These two MOC images suggest that the landing site is a dynamic, changing place on the time scale of several months. MGS MOC has never seen a dust devil occur in Gusev Crater [ http://photojournal.jpl.nasa.gov/catalog/PIA0PIA05119 ], the location of the Spirit landing site [ http://photojournal.jpl.nasa.gov/catalog/PIA0PIA05120 ]. MGS always flies over Gusev around 2 p.m. local time, so this means that dust devils are not believed to be common around 2 p.m. However, the changes in the dark streaks suggest that dust devils definitely have occurred in Gusev Crater over the past 5 to 6 months, and they most likely occur earlier than 2 p.m. (perhaps closer to local 1 p.m. or noon). These two MOC images are simple cylindrical map projections (rotated somewhat, note the north arrow, N) at a scale of about 3 meters per pixel (~10 ft/pixel), the 300 meter scale bar is about two-tenths of a mile long. The images are located near 14.7°S, 184.6°W, and are illuminated from the left.
Locating Landers on Mars
PIA05121
Sol (our sun)
Mars Orbiter Camera
Title Locating Landers on Mars
Original Caption Released with Image 4 January 2004 In 2003, a new technique was pioneered by the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) experiment to allow the camera to obtain images with better than 1 meter (~ 3 ft) per pixel resolution. By pitching the spacecraft at a rate faster than the spacecraft moves in its orbit around Mars, MOC is able to obtain pictures with a down-track resolution of about 50 cm/pixel (~20 inches/pixel), although the cross-track resolution remains ~1.5 m/pixel (5 ft/pixel). One of the key goals of this image motion compensation (IMC) technique is to be able to image landers, such as the Mars Exploration Rovers, Spirit and Opportunity, on the martian surface. The two pictures shown here were acquired during the IMC testing in 2003. The first shows the location of the Mars Pathfinder lander (MPF) and the nearby boulder, Yogi. The second image shows the location of the Viking 1 (VL-1) lander. These locations were determined by using sight lines from the landers to near and far objects seen in the pictures acquired by the landers, and then matching these to locations in earlier, 1.5 to 3.0 m/pixel MOC images. Then, the IMC images, shown here, were acquired by MGS so that the actual landers, sitting on the martian surface, might be resolved. This technique only works well when the location of the lander is already fairly-well established. It would be extremely difficult to find a lander for which the location is uncertain, such as Viking 2 or Mars Polar Lander (in fact, for Mars Polar Lander, it would take over 60 years to map out the entire landing ellipse in which the spacecraft was lost). The two images shown here are illuminated from the left and show areas only a few hundred meters across. More information about how MGS MOC will be used to help locate the Mars Exploration Rovers, Spirit and Opportunity, can be found by visiting: Finding MERs [ http://www.msss.com/mer_mission/finding_mer/ ].
Virtual Rover on Its Own
PIA05184
Sol (our sun)
Navigation Camera
Title Virtual Rover on Its Own
Original Caption Released with Image This image shows a screenshot from the software used by engineers to roll the Mars Exploration Rover Opportunity off its lander and onto martian soil. Engineers received confirmation that Opportunity's six wheels had touched ground at 3:01 a.m. PST, January 31, 2004, on the seventh martian day, or sol, of the mission. The software simulates the rover's movements, helping to plot a safe course. The virtual 3-D world around the rover is built from images taken by Opportunity's stereo navigation cameras. Regions for which the rover has not yet acquired 3-D data are represented in beige. The rover is approximately 1 meter (3 feet) in front of the lander, facing north.
Hematite Deposits at Opportu …
PIA05153
Sol (our sun)
Mars Orbiter Camera
Title Hematite Deposits at Opportunity Landing Site
Original Caption Released with Image This vertical cross-section of the Meridiani Planum region shows that the hematite-bearing plains are part of an extensive set of deposits on top of the ancient, heavily cratered terrain. The Mars Exploration Rover Opportunity is targeted to land here on January 24, 2004 Pacific Standard Time. The background surface image of Meridiani Planum was acquired by the Mars Orbital Camera on NASA's Mars Global Surveyor. On Earth, grey hematite is an iron oxide mineral that typically forms in the presence of liquid water. The rover Opportunity will study the martian terrain and examine the hematite deposits to determine whether liquid water was present in the past when rocks were being formed.
Mars Exploration Rover (MER- …
PIA05120
Sol (our sun)
Mars Orbiter Camera
Title Mars Exploration Rover (MER-A) Spirit Landing Site
Original Caption Released with Image January 2004 Excitement builds as the first Mars Exploration Rover (MER-A), Spirit, prepares to land on Mars just after 8:35 p.m. Pacific Standard Time today, 3 January 2004 (04:35, 4 January 2004 UTC). Today's Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) picture is a mosaic of MOC images of the Spirit landing site. The rover is expected to land somewhere within the approximately 83 km (~52 mi) long by ~10 km (~6 mi) wide ellipse on the floor of Gusev Crater [ http://photojournal.jpl.nasa.gov/catalog/PIA05119 ]. Clicking on the image above will show a map of the landing site at 25 meters (82 feet) per pixel. MOC has acquired 71 pictures of the landing site over a period spanning 3 Mars years (from July 1999 through December 2003), and more than 85 pictures were acquired within Gusev Crater specifically to support the Mars Exploration Rover landing site selection process. These pictures were acquired not only in different years, but in different seasons, so the illumination angle, overall brightness, and patterns of ephemeral, dark dust devil streaks and wind streaks are different from image to image within the mosaic. In areas where no MOC coverage exists, gaps were filled using images from the Mars Odyssey Thermal Emission Imaging System (THEMIS) visible imager, a lower-resolution camera built by Malin Space Science Systems and operated by Arizona State University. The Gusev Crater landing ellipse is centered near 14.8°S, 184.8°W. Sunlight illuminates each image in the mosaic from the left (in some cases, upper left, in others, lower left). Spirit will land at about 2 p.m. local time on Mars. At the same time, Mars Global Surveyor will pass over the site and listen for a transmission of Spirit's entry, descent, and landing data. These data will be relayed back to Earth by the MOC. For more information about the Mars Exploration Rovers, visit NASA/JPL's Mars Exploration Program Web site [ http://marsweb.jpl.nasa.gov/ ]. For more information about the work that Malin Space Science Systems and MGS MOC are doing in support of the rover missions, see: http://www.msss.com/mer_mission/ [ http://www.msss.com/mer_mission/ ]. For information about how MSSS will use this mosaic of the landing site to help find Spirit after it touches down, see Finding MERs [ http://www.msss.com/mer_mission/finding_mer/ ].
Gusev Crater
PIA05119
Sol (our sun)
Mars Orbiter Camera
Title Gusev Crater
Original Caption Released with Image 2 January 2004 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) wide angle image shows the crater in which the Mars Exploration Rover, Spirit, is scheduled to land on 4 January 2004 (around 8:35 p.m., 3 January 2004, Pacific Standard Time). The white ellipse marks the approximate location of Spirit's landing zone. Gusev Crater is about 165 km (103 mi) across. The valley that enters Gusev from the south-southeast (bottom/lower right) is named Ma'adim Vallis. The dark areas on the floor of Gusev, when viewed at higher resolution, are found to be surfaces from which dust devils and wind gusts have removed or disrupted the fine, bright dust that otherwise blankets the crater floor. This image, acquired in November 2003, is located near 14.5°S, 184.6°W. Sunlight illuminates the scene from the lower left.
Opportunity Site: Before and …
PIA05295
Sol (our sun)
Mars Orbiter Camera
Title Opportunity Site: Before and After
Original Caption Released with Image 13 February 2004 This pair of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) narrow angle images shows the landing site of the Mars Exploration Rover (MER-B), Opportunity, before and after the landing. The first image was acquired on 24 August 2003, five months prior to the 25 January 2004 landing. The second picture, obtained on 1 February 2004, shows the lander--located within a ~20 meter (~66 feet) diameter crater--and other features that resulted from the landing. The Opportunity landing site is located in Meridiani Planum near 2.0°S, 5.6°W. Both images are simple cylindrical map projections with north up and east to the right, the lower image is about 1.4 kilometers (0.9 miles) wide. The dark area on the right side of the upper picture was not imaged by MOC until after the landing. Sunlight illuminates each scene from the lower left.
Mark of the Moessbauer
PIA05313
Sol (our sun)
Microscopic Imager, Moessbau …
Title Mark of the Moessbauer
Original Caption Released with Image This image, taken by an instrument called the microscopic imager on the Mars Exploration Rover Spirit, reveals an imprint left by another instrument, the Moessbauer spectrometer. The imprint is at a location within the rover wheel track named "Middle of Road." Both instruments are located on the rover's instrument deployment device, or "arm." Not only was the Moessbauer spectrometer able to gain important mineralogical information about this site, it also aided in the placement of the microscopic imager. On hard rocks, the microscopic imager uses its tiny metal sensor to determine proper placement for best possible focus. However, on the soft martian soil this guide would sink, prohibiting proper placement of the microscopic imager. After the Moessbauer spectrometer's much larger, donut-shaped plate touches the surface, Spirit can correctly calculate where to position the microscopic imager. Scientists find this image particularly interesting because of the compacted nature of the soil that was underneath the Moessbauer spectrometer plate. Also of interest are the embedded, round grains and the fractured appearance of the material disturbed within the hole. The material appears to be slightly cohesive. The field of view in this image, taken on Sol 43 (February 16, 2004), measures approximately 3 centimeters (1.2 inches) across.
Third MOC View of Opportunit …
PIA05299
Sol (our sun)
Mars Orbiter Camera
Title Third MOC View of Opportunity Landing Site
Original Caption Released with Image 17 February 2004 Around 19:03 UTC on 15 February 2004, the Mars Global Surveyor (MGS) spacecraft flew almost directly over the Mars Exploration Rover (MER-B), Opportunity, landing site. The MGS Mars Orbiter Camera (MOC) team decided, therefore, to take MOC's third picture of the lander. Unlike the previous two images, this attempt did not require rolling the spacecraft to hit the target. The image shows the location of the lander in its small impact crater, it also shows the locations of the parachute/backshell and the area disturbed by landing rockets and the first bounce. The heat shield impact site was too far east for the camera to view. The Opportunity landing site is near 2.0°S, 5.6°W in Meridiani Planum. Sunlight illuminates the scene from the left. The 150 meter scale bar is about 164 yards long. The image is not map-projected, north is toward the top/upper right.
Mars Exploration Rover (MER- …
PIA05251
Sol (our sun)
Mars Orbiter Camera
Title Mars Exploration Rover (MER-B) Opportunity Landing Site
Original Caption Released with Image 1, Viking 2, Mars Pathfinder, and Spirit sites. Sunlight illuminates the wide and narrow angle views, and each image in the mosaic, from the left. The THEMIS instrument is operated by a team at Arizona State University, [ http://themis.asu.edu/ ] the THEMIS-VIS camera was built by Malin Space Science Systems (MSSS), [ http://www.msss.com/press_releases/vismoc/ ] which also operates the MGS MOC. Opportunity will land in the mid-afternoon, local time, on Mars. At the same time, Mars Global Surveyor will pass over the site and listen for a transmission of Opportunity's entry, descent, and landing data. These data will be relayed back to Earth by the MOC. For more information about the Mars Exploration Rovers, visit NASA/JPL's Mars Exploration Program Web site. [ http://marsweb.jpl.nasa.gov/ ] For more information about the work that Malin Space Science Systems and MGS MOC are doing in support of the rover missions, see: http://www.msss.com/mer_mission/ [ http://www.msss.com/mer_mission/ ]. For information about how MSSS will use this mosaic of the landing site to help find Opportunity after it touches down, see Finding MERs [ http://www.msss.com/mer_mission/finding_mer/ ]. MER landing site weather reports are located at: http://www.msss.com/mars_images/moc/mer_weather/. [ http://www.msss.com/mars_images/moc/mer_weather/ ], Mosaic (Click on image for larger view) Wide Angle View (Click on image for larger view), Narrow Angle View (Click on image for larger view) 24 January 2004 The second Mars Exploration Rover (MER-B), Opportunity, is set to land on Mars around 9:05 p.m. Pacific Standard Time today, 24 January 2004 (25 January 2004 UTC). Above are shown three perspectives on the Opportunity landing site, which is an ellipse in Meridiani Planum approximately 87 km (54 mi) long by 11 km (6.8 mi) wide. All images are oriented with north up and east to the right. The lander will be coming through the atmosphere from the west/southwest, roughly following the long axis of the ellipse. It is most likely to touch down somewhere near the center of the ellipse. The first image (top) is a mosaic of MGS MOC and Mars Odyssey Thermal Emission Imaging System visible images (THEMIS-VIS). The THEMIS-VIS instrument provides pictures with a spatial resolution of 18 meters per pixel (~59 ft/pixel), the MOC images used in the mosaic have resolutions ranging from 1.4 m/pixel to 12 m/pixel. A total of 15 THEMIS-VIS images were used to form the background, on which 61 MOC high resolution images were mosaiced. These data were acquired over a period spanning parts of 3 Mars years between April 1999 through January 2004. These pictures were acquired not only in different years, but in different seasons, so the illumination angle, overall brightness, and patterns of ephemeral windblown dust and, in some cases, dark dust devil streaks, are different from image to image within the mosaic. The second image (middle) is a Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) red wide angle view obtained in November 2003 as part of an on-going effort to monitor the weather at the landing site. The wide angle view provides a sense of the regional context. The third image (bottom) is a 1.8 m/pixel (6 ft/pixel) view near the center of the landing ellipse. It was also acquired by MOC in November 2003, and covers an area 3 km (1.9 mi) wide. The light-toned, somewhat circular features are believed to be either the location of ancient, buried, nearly-filled meteor impact craters or the eroded remains of craters that formed in bedrock that has long since been removed from the region. The Opportunity landing site in Meridiani Planum was selected to provide access, it is hoped, to materials bearing the iron oxide mineral, hematite. Hematite was detected in this region by the Thermal Emission Spectrometer (TES) on MGS. This mineral is suspected of providing a clue that liquid water may have once played a role in the region. The dark-toned materials of Meridiani Planum cover a lighter-toned substrate that may consist of layered rock. Small ridges have formed in the dark material in some parts of the landing ellipse, but no one will know until the first images are returned, exactly what features will be present at the Opportunity site. One thing is certain: no previous Mars lander has ever gone to a setting like Meridiani Planum. The landscape is almost certain to be different than the Viking
Mars Exploration Rover (MER- …
PIA05251
Sol (our sun)
Mars Orbiter Camera
Title Mars Exploration Rover (MER-B) Opportunity Landing Site
Original Caption Released with Image 1, Viking 2, Mars Pathfinder, and Spirit sites. Sunlight illuminates the wide and narrow angle views, and each image in the mosaic, from the left. The THEMIS instrument is operated by a team at Arizona State University, [ http://themis.asu.edu/ ] the THEMIS-VIS camera was built by Malin Space Science Systems (MSSS), [ http://www.msss.com/press_releases/vismoc/ ] which also operates the MGS MOC. Opportunity will land in the mid-afternoon, local time, on Mars. At the same time, Mars Global Surveyor will pass over the site and listen for a transmission of Opportunity's entry, descent, and landing data. These data will be relayed back to Earth by the MOC. For more information about the Mars Exploration Rovers, visit NASA/JPL's Mars Exploration Program Web site. [ http://marsweb.jpl.nasa.gov/ ] For more information about the work that Malin Space Science Systems and MGS MOC are doing in support of the rover missions, see: http://www.msss.com/mer_mission/ [ http://www.msss.com/mer_mission/ ]. For information about how MSSS will use this mosaic of the landing site to help find Opportunity after it touches down, see Finding MERs [ http://www.msss.com/mer_mission/finding_mer/ ]. MER landing site weather reports are located at: http://www.msss.com/mars_images/moc/mer_weather/. [ http://www.msss.com/mars_images/moc/mer_weather/ ], Mosaic (Click on image for larger view) Wide Angle View (Click on image for larger view), Narrow Angle View (Click on image for larger view) 24 January 2004 The second Mars Exploration Rover (MER-B), Opportunity, is set to land on Mars around 9:05 p.m. Pacific Standard Time today, 24 January 2004 (25 January 2004 UTC). Above are shown three perspectives on the Opportunity landing site, which is an ellipse in Meridiani Planum approximately 87 km (54 mi) long by 11 km (6.8 mi) wide. All images are oriented with north up and east to the right. The lander will be coming through the atmosphere from the west/southwest, roughly following the long axis of the ellipse. It is most likely to touch down somewhere near the center of the ellipse. The first image (top) is a mosaic of MGS MOC and Mars Odyssey Thermal Emission Imaging System visible images (THEMIS-VIS). The THEMIS-VIS instrument provides pictures with a spatial resolution of 18 meters per pixel (~59 ft/pixel), the MOC images used in the mosaic have resolutions ranging from 1.4 m/pixel to 12 m/pixel. A total of 15 THEMIS-VIS images were used to form the background, on which 61 MOC high resolution images were mosaiced. These data were acquired over a period spanning parts of 3 Mars years between April 1999 through January 2004. These pictures were acquired not only in different years, but in different seasons, so the illumination angle, overall brightness, and patterns of ephemeral windblown dust and, in some cases, dark dust devil streaks, are different from image to image within the mosaic. The second image (middle) is a Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) red wide angle view obtained in November 2003 as part of an on-going effort to monitor the weather at the landing site. The wide angle view provides a sense of the regional context. The third image (bottom) is a 1.8 m/pixel (6 ft/pixel) view near the center of the landing ellipse. It was also acquired by MOC in November 2003, and covers an area 3 km (1.9 mi) wide. The light-toned, somewhat circular features are believed to be either the location of ancient, buried, nearly-filled meteor impact craters or the eroded remains of craters that formed in bedrock that has long since been removed from the region. The Opportunity landing site in Meridiani Planum was selected to provide access, it is hoped, to materials bearing the iron oxide mineral, hematite. Hematite was detected in this region by the Thermal Emission Spectrometer (TES) on MGS. This mineral is suspected of providing a clue that liquid water may have once played a role in the region. The dark-toned materials of Meridiani Planum cover a lighter-toned substrate that may consist of layered rock. Small ridges have formed in the dark material in some parts of the landing ellipse, but no one will know until the first images are returned, exactly what features will be present at the Opportunity site. One thing is certain: no previous Mars lander has ever gone to a setting like Meridiani Planum. The landscape is almost certain to be different than the Viking
Mars Exploration Rover (MER- …
PIA05251
Sol (our sun)
Mars Orbiter Camera
Title Mars Exploration Rover (MER-B) Opportunity Landing Site
Original Caption Released with Image 1, Viking 2, Mars Pathfinder, and Spirit sites. Sunlight illuminates the wide and narrow angle views, and each image in the mosaic, from the left. The THEMIS instrument is operated by a team at Arizona State University, [ http://themis.asu.edu/ ] the THEMIS-VIS camera was built by Malin Space Science Systems (MSSS), [ http://www.msss.com/press_releases/vismoc/ ] which also operates the MGS MOC. Opportunity will land in the mid-afternoon, local time, on Mars. At the same time, Mars Global Surveyor will pass over the site and listen for a transmission of Opportunity's entry, descent, and landing data. These data will be relayed back to Earth by the MOC. For more information about the Mars Exploration Rovers, visit NASA/JPL's Mars Exploration Program Web site. [ http://marsweb.jpl.nasa.gov/ ] For more information about the work that Malin Space Science Systems and MGS MOC are doing in support of the rover missions, see: http://www.msss.com/mer_mission/ [ http://www.msss.com/mer_mission/ ]. For information about how MSSS will use this mosaic of the landing site to help find Opportunity after it touches down, see Finding MERs [ http://www.msss.com/mer_mission/finding_mer/ ]. MER landing site weather reports are located at: http://www.msss.com/mars_images/moc/mer_weather/. [ http://www.msss.com/mars_images/moc/mer_weather/ ], Mosaic (Click on image for larger view) Wide Angle View (Click on image for larger view), Narrow Angle View (Click on image for larger view) 24 January 2004 The second Mars Exploration Rover (MER-B), Opportunity, is set to land on Mars around 9:05 p.m. Pacific Standard Time today, 24 January 2004 (25 January 2004 UTC). Above are shown three perspectives on the Opportunity landing site, which is an ellipse in Meridiani Planum approximately 87 km (54 mi) long by 11 km (6.8 mi) wide. All images are oriented with north up and east to the right. The lander will be coming through the atmosphere from the west/southwest, roughly following the long axis of the ellipse. It is most likely to touch down somewhere near the center of the ellipse. The first image (top) is a mosaic of MGS MOC and Mars Odyssey Thermal Emission Imaging System visible images (THEMIS-VIS). The THEMIS-VIS instrument provides pictures with a spatial resolution of 18 meters per pixel (~59 ft/pixel), the MOC images used in the mosaic have resolutions ranging from 1.4 m/pixel to 12 m/pixel. A total of 15 THEMIS-VIS images were used to form the background, on which 61 MOC high resolution images were mosaiced. These data were acquired over a period spanning parts of 3 Mars years between April 1999 through January 2004. These pictures were acquired not only in different years, but in different seasons, so the illumination angle, overall brightness, and patterns of ephemeral windblown dust and, in some cases, dark dust devil streaks, are different from image to image within the mosaic. The second image (middle) is a Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) red wide angle view obtained in November 2003 as part of an on-going effort to monitor the weather at the landing site. The wide angle view provides a sense of the regional context. The third image (bottom) is a 1.8 m/pixel (6 ft/pixel) view near the center of the landing ellipse. It was also acquired by MOC in November 2003, and covers an area 3 km (1.9 mi) wide. The light-toned, somewhat circular features are believed to be either the location of ancient, buried, nearly-filled meteor impact craters or the eroded remains of craters that formed in bedrock that has long since been removed from the region. The Opportunity landing site in Meridiani Planum was selected to provide access, it is hoped, to materials bearing the iron oxide mineral, hematite. Hematite was detected in this region by the Thermal Emission Spectrometer (TES) on MGS. This mineral is suspected of providing a clue that liquid water may have once played a role in the region. The dark-toned materials of Meridiani Planum cover a lighter-toned substrate that may consist of layered rock. Small ridges have formed in the dark material in some parts of the landing ellipse, but no one will know until the first images are returned, exactly what features will be present at the Opportunity site. One thing is certain: no previous Mars lander has ever gone to a setting like Meridiani Planum. The landscape is almost certain to be different than the Viking
Mars Exploration Rover (MER- …
PIA05251
Sol (our sun)
Mars Orbiter Camera
Title Mars Exploration Rover (MER-B) Opportunity Landing Site
Original Caption Released with Image 1, Viking 2, Mars Pathfinder, and Spirit sites. Sunlight illuminates the wide and narrow angle views, and each image in the mosaic, from the left. The THEMIS instrument is operated by a team at Arizona State University, [ http://themis.asu.edu/ ] the THEMIS-VIS camera was built by Malin Space Science Systems (MSSS), [ http://www.msss.com/press_releases/vismoc/ ] which also operates the MGS MOC. Opportunity will land in the mid-afternoon, local time, on Mars. At the same time, Mars Global Surveyor will pass over the site and listen for a transmission of Opportunity's entry, descent, and landing data. These data will be relayed back to Earth by the MOC. For more information about the Mars Exploration Rovers, visit NASA/JPL's Mars Exploration Program Web site. [ http://marsweb.jpl.nasa.gov/ ] For more information about the work that Malin Space Science Systems and MGS MOC are doing in support of the rover missions, see: http://www.msss.com/mer_mission/ [ http://www.msss.com/mer_mission/ ]. For information about how MSSS will use this mosaic of the landing site to help find Opportunity after it touches down, see Finding MERs [ http://www.msss.com/mer_mission/finding_mer/ ]. MER landing site weather reports are located at: http://www.msss.com/mars_images/moc/mer_weather/. [ http://www.msss.com/mars_images/moc/mer_weather/ ], Mosaic (Click on image for larger view) Wide Angle View (Click on image for larger view), Narrow Angle View (Click on image for larger view) 24 January 2004 The second Mars Exploration Rover (MER-B), Opportunity, is set to land on Mars around 9:05 p.m. Pacific Standard Time today, 24 January 2004 (25 January 2004 UTC). Above are shown three perspectives on the Opportunity landing site, which is an ellipse in Meridiani Planum approximately 87 km (54 mi) long by 11 km (6.8 mi) wide. All images are oriented with north up and east to the right. The lander will be coming through the atmosphere from the west/southwest, roughly following the long axis of the ellipse. It is most likely to touch down somewhere near the center of the ellipse. The first image (top) is a mosaic of MGS MOC and Mars Odyssey Thermal Emission Imaging System visible images (THEMIS-VIS). The THEMIS-VIS instrument provides pictures with a spatial resolution of 18 meters per pixel (~59 ft/pixel), the MOC images used in the mosaic have resolutions ranging from 1.4 m/pixel to 12 m/pixel. A total of 15 THEMIS-VIS images were used to form the background, on which 61 MOC high resolution images were mosaiced. These data were acquired over a period spanning parts of 3 Mars years between April 1999 through January 2004. These pictures were acquired not only in different years, but in different seasons, so the illumination angle, overall brightness, and patterns of ephemeral windblown dust and, in some cases, dark dust devil streaks, are different from image to image within the mosaic. The second image (middle) is a Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) red wide angle view obtained in November 2003 as part of an on-going effort to monitor the weather at the landing site. The wide angle view provides a sense of the regional context. The third image (bottom) is a 1.8 m/pixel (6 ft/pixel) view near the center of the landing ellipse. It was also acquired by MOC in November 2003, and covers an area 3 km (1.9 mi) wide. The light-toned, somewhat circular features are believed to be either the location of ancient, buried, nearly-filled meteor impact craters or the eroded remains of craters that formed in bedrock that has long since been removed from the region. The Opportunity landing site in Meridiani Planum was selected to provide access, it is hoped, to materials bearing the iron oxide mineral, hematite. Hematite was detected in this region by the Thermal Emission Spectrometer (TES) on MGS. This mineral is suspected of providing a clue that liquid water may have once played a role in the region. The dark-toned materials of Meridiani Planum cover a lighter-toned substrate that may consist of layered rock. Small ridges have formed in the dark material in some parts of the landing ellipse, but no one will know until the first images are returned, exactly what features will be present at the Opportunity site. One thing is certain: no previous Mars lander has ever gone to a setting like Meridiani Planum. The landscape is almost certain to be different than the Viking
Map of Moessbauer Placement
PIA05303
Sol (our sun)
Microscopic Imager, Moessbau …
Title Map of Moessbauer Placement
Original Caption Released with Image This elevation map of a soil target called "Peak" was created from images taken by the microscopic imager located on the Mars Exploration Rover Spirit's instrument deployment device or "arm." The image reveals the various high and low points of this spot of soil after the Moessbauer spectrometer, another instrument on the rover's arm, was gently placed down on it. The blue areas are farthest away from the instrument, the red areas are closest. The variation in distance between blue and red areas is only 2 millimeters, or .08 of an inch. The images were acquired on sol 39 (February 11, 2004).
Tiny Pebbles
PIA05324
Sol (our sun)
Microscopic Imager
Title Tiny Pebbles
Original Caption Released with Image This image taken by the microscopic imager instrument located on the Mars Exploration Rover Opportunity's instrument deployment device, or "arm," shows the crater floor at Meridiani Planum, Mars, before the rover dug a trench on sol 23 (February 16, 2004). Grains of soil on the floor appear sand-sized with millimeter-sized pebbles on top. The area in this image measures approximately 3 centimeters (1.2 inches) across.
Spirit Spies "Bonneville
PIA05314
Sol (our sun)
Panoramic Camera
Title Spirit Spies "Bonneville
Original Caption Released with Image This mosaic image from the panoramic camera on the Mars Exploration Rover Spirit shows the area in front of the rover after its record 27.5 meters (90.2 feet) drive on Sol 43, which ended February 16, 2004. Spirit is looking toward one of its future targets, the rim of a crater nicknamed "Bonneville.
Taking a Deeper Look
PIA05325
Sol (our sun)
Microscopic Imager, Navigati …
Title Taking a Deeper Look
Original Caption Released with Image This image taken by the navigation camera on the Mars Exploration Rover Opportunity shows the crater floor at Meridiani Planum, Mars, after the rover dug a trench on sol 23 (February 16, 2004). Scientists used the microscopic imager, an instrument located on the rover's instrument deployment device, or "arm," to take a picture of the small patch of soil in the center of the trench wall. Here, that microscopic image has been overlaid to show where that patch of soil, which measures approximately 3 centimeters (1.2 inches) across, is located.
Opportunity Slices into the …
PIA05445
Sol (our sun)
Microscopic Imager, Rock Abr …
Title Opportunity Slices into the Surface of Mars
Original Caption Released with Image The semi-circular depression on the right side of this microscopic image resulted from Opportunity's first grinding of a rock on Mars. The rock abrasion tool sliced into the surface about 4 millimeters (0.16 inches) deep and ground off a patch 45.5 millimeters (1.8 inches) in diameter on a rock called "McKittrick" during Opportunity's 30th sol on Mars, Feb. 23, 2004. The hole exposed fresh interior material of the rock for close inspection by the rover's microscopic imager and two spectrometers on the robotic arm. Scientists and engineers got a nice bonus in that two spherical features nicknamed "blueberries" were unexpectedly cut in half within this rock. Team members had noticed the blueberries in earlier pictures on other rocks in the outcrop and had wanted to attempt to cut one in half sometime during the future of the mission. As luck would have it, two blueberries were hidden in the depths of "McKittrick." The one blueberry shown in the bottom right of this picture appears to have been scratched by the grinding wheel, which is further explained in PIA05446 [ http://photojournal.jpl.nasa.gov/catalog/PIA05446 ]. The two rectangular boxes in the lower left and upper middle parts of this image are "drop outs," where the data packets inadvertently did not make it back to Earth during the initial communications relay via the Deep Space Network antennas. The missing data packets should be resent to Earth within the next few days. Just above each of the black "drop out" rectangles is another rectangular area filled with a cluster of smaller rectangles in different shades of gray, which are image compression artifacts. For more information about the "blueberries," please see JPL's Press Release dated February 9, 2004. [ http://marsrovers.jpl.nasa.gov/newsroom/pressreleases/20040209a.html ] For more microscopic images of the results from Opportunity's first use of the rock abrasion tool, please see the raw images for sol 30. [ http://marsrovers.jpl.nasa.gov/gallery/all/opportunity_m030.html ] The rock abrasion tools on both Mars Exploration Rovers were supplied by Honeybee Robotics, New York, N.Y.
Ripples in Rocks Point to Wa …
PIA05482
Sol (our sun)
Panoramic Camera
Title Ripples in Rocks Point to Water
Original Caption Released with Image This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features -- the thin, cross-stratified bedding combined with the possible concave geometry -- suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at this small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water. "Crossbedding Evidence for Underwater Origin" Interpretations of cross-lamination patterns presented as clues to this martian rock's origin under flowing water are marked on images taken by the panoramic camera and microscopic imager on NASA's Opportunity. The red arrows (Figure 1) point to features suggesting cross-lamination within the rock called "Last Chance" taken at a distance of 4.5 meters (15 feet) during Opportunity's 17th sol (February 10, 2004). The inferred sets of fine layers at angles to each other (cross-laminae) are up to 1.4 centimeters (half an inch) thick. For scale, the distance between two vertical cracks in the rock is about 7 centimeters (2.8 inches). The feature indicated by the middle red arrow suggests a pattern called trough cross-lamination, likely produced when flowing water shaped sinuous ripples in underwater sediment and pushed the ripples to migrate in one direction. The direction of the ancient flow would have been either toward or away from the line of sight from this perspective. The lower and upper red arrows point to cross-lamina sets that are consistent with underwater ripples in the sediment having moved in water that was flowing left to right from this perspective. The yellow arrows (Figure 2) indicate places in the panoramic camera view that correlate with places in the microscope's view of the same rock. Figure 3 The microscopic view (Figure 3) is a mosaic of some of the 152 microscopic imager frames of "Last Chance" that Opportunity took on sols 39 and 40 (March 3 and 4, 2004). Figure 4 Figure 4 shows cross-lamination expressed by lines that trend downward from left to right, traced with black lines in the interpretive overlay. These cross-lamination lines are consistent with dipping planes that would have formed surfaces on the down-current side of migrating ripples. Interpretive blue lines indicate boundaries between possible sets of cross-laminae.
Ripples in Rocks Point to Wa …
PIA05482
Sol (our sun)
Panoramic Camera
Title Ripples in Rocks Point to Water
Original Caption Released with Image This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features -- the thin, cross-stratified bedding combined with the possible concave geometry -- suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at this small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water. "Crossbedding Evidence for Underwater Origin" Interpretations of cross-lamination patterns presented as clues to this martian rock's origin under flowing water are marked on images taken by the panoramic camera and microscopic imager on NASA's Opportunity. The red arrows (Figure 1) point to features suggesting cross-lamination within the rock called "Last Chance" taken at a distance of 4.5 meters (15 feet) during Opportunity's 17th sol (February 10, 2004). The inferred sets of fine layers at angles to each other (cross-laminae) are up to 1.4 centimeters (half an inch) thick. For scale, the distance between two vertical cracks in the rock is about 7 centimeters (2.8 inches). The feature indicated by the middle red arrow suggests a pattern called trough cross-lamination, likely produced when flowing water shaped sinuous ripples in underwater sediment and pushed the ripples to migrate in one direction. The direction of the ancient flow would have been either toward or away from the line of sight from this perspective. The lower and upper red arrows point to cross-lamina sets that are consistent with underwater ripples in the sediment having moved in water that was flowing left to right from this perspective. The yellow arrows (Figure 2) indicate places in the panoramic camera view that correlate with places in the microscope's view of the same rock. Figure 3 The microscopic view (Figure 3) is a mosaic of some of the 152 microscopic imager frames of "Last Chance" that Opportunity took on sols 39 and 40 (March 3 and 4, 2004). Figure 4 Figure 4 shows cross-lamination expressed by lines that trend downward from left to right, traced with black lines in the interpretive overlay. These cross-lamination lines are consistent with dipping planes that would have formed surfaces on the down-current side of migrating ripples. Interpretive blue lines indicate boundaries between possible sets of cross-laminae.
Ripples in Rocks Point to Wa …
PIA05482
Sol (our sun)
Panoramic Camera
Title Ripples in Rocks Point to Water
Original Caption Released with Image This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features -- the thin, cross-stratified bedding combined with the possible concave geometry -- suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at this small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water. "Crossbedding Evidence for Underwater Origin" Interpretations of cross-lamination patterns presented as clues to this martian rock's origin under flowing water are marked on images taken by the panoramic camera and microscopic imager on NASA's Opportunity. The red arrows (Figure 1) point to features suggesting cross-lamination within the rock called "Last Chance" taken at a distance of 4.5 meters (15 feet) during Opportunity's 17th sol (February 10, 2004). The inferred sets of fine layers at angles to each other (cross-laminae) are up to 1.4 centimeters (half an inch) thick. For scale, the distance between two vertical cracks in the rock is about 7 centimeters (2.8 inches). The feature indicated by the middle red arrow suggests a pattern called trough cross-lamination, likely produced when flowing water shaped sinuous ripples in underwater sediment and pushed the ripples to migrate in one direction. The direction of the ancient flow would have been either toward or away from the line of sight from this perspective. The lower and upper red arrows point to cross-lamina sets that are consistent with underwater ripples in the sediment having moved in water that was flowing left to right from this perspective. The yellow arrows (Figure 2) indicate places in the panoramic camera view that correlate with places in the microscope's view of the same rock. Figure 3 The microscopic view (Figure 3) is a mosaic of some of the 152 microscopic imager frames of "Last Chance" that Opportunity took on sols 39 and 40 (March 3 and 4, 2004). Figure 4 Figure 4 shows cross-lamination expressed by lines that trend downward from left to right, traced with black lines in the interpretive overlay. These cross-lamination lines are consistent with dipping planes that would have formed surfaces on the down-current side of migrating ripples. Interpretive blue lines indicate boundaries between possible sets of cross-laminae.
Ripples in Rocks Point to Wa …
PIA05482
Sol (our sun)
Panoramic Camera
Title Ripples in Rocks Point to Water
Original Caption Released with Image This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features -- the thin, cross-stratified bedding combined with the possible concave geometry -- suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at this small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water. "Crossbedding Evidence for Underwater Origin" Interpretations of cross-lamination patterns presented as clues to this martian rock's origin under flowing water are marked on images taken by the panoramic camera and microscopic imager on NASA's Opportunity. The red arrows (Figure 1) point to features suggesting cross-lamination within the rock called "Last Chance" taken at a distance of 4.5 meters (15 feet) during Opportunity's 17th sol (February 10, 2004). The inferred sets of fine layers at angles to each other (cross-laminae) are up to 1.4 centimeters (half an inch) thick. For scale, the distance between two vertical cracks in the rock is about 7 centimeters (2.8 inches). The feature indicated by the middle red arrow suggests a pattern called trough cross-lamination, likely produced when flowing water shaped sinuous ripples in underwater sediment and pushed the ripples to migrate in one direction. The direction of the ancient flow would have been either toward or away from the line of sight from this perspective. The lower and upper red arrows point to cross-lamina sets that are consistent with underwater ripples in the sediment having moved in water that was flowing left to right from this perspective. The yellow arrows (Figure 2) indicate places in the panoramic camera view that correlate with places in the microscope's view of the same rock. Figure 3 The microscopic view (Figure 3) is a mosaic of some of the 152 microscopic imager frames of "Last Chance" that Opportunity took on sols 39 and 40 (March 3 and 4, 2004). Figure 4 Figure 4 shows cross-lamination expressed by lines that trend downward from left to right, traced with black lines in the interpretive overlay. These cross-lamination lines are consistent with dipping planes that would have formed surfaces on the down-current side of migrating ripples. Interpretive blue lines indicate boundaries between possible sets of cross-laminae.
Ripples in Rocks Point to Wa …
PIA05482
Sol (our sun)
Panoramic Camera
Title Ripples in Rocks Point to Water
Original Caption Released with Image This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features -- the thin, cross-stratified bedding combined with the possible concave geometry -- suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at this small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water. "Crossbedding Evidence for Underwater Origin" Interpretations of cross-lamination patterns presented as clues to this martian rock's origin under flowing water are marked on images taken by the panoramic camera and microscopic imager on NASA's Opportunity. The red arrows (Figure 1) point to features suggesting cross-lamination within the rock called "Last Chance" taken at a distance of 4.5 meters (15 feet) during Opportunity's 17th sol (February 10, 2004). The inferred sets of fine layers at angles to each other (cross-laminae) are up to 1.4 centimeters (half an inch) thick. For scale, the distance between two vertical cracks in the rock is about 7 centimeters (2.8 inches). The feature indicated by the middle red arrow suggests a pattern called trough cross-lamination, likely produced when flowing water shaped sinuous ripples in underwater sediment and pushed the ripples to migrate in one direction. The direction of the ancient flow would have been either toward or away from the line of sight from this perspective. The lower and upper red arrows point to cross-lamina sets that are consistent with underwater ripples in the sediment having moved in water that was flowing left to right from this perspective. The yellow arrows (Figure 2) indicate places in the panoramic camera view that correlate with places in the microscope's view of the same rock. Figure 3 The microscopic view (Figure 3) is a mosaic of some of the 152 microscopic imager frames of "Last Chance" that Opportunity took on sols 39 and 40 (March 3 and 4, 2004). Figure 4 Figure 4 shows cross-lamination expressed by lines that trend downward from left to right, traced with black lines in the interpretive overlay. These cross-lamination lines are consistent with dipping planes that would have formed surfaces on the down-current side of migrating ripples. Interpretive blue lines indicate boundaries between possible sets of cross-laminae.
A Long Way From Home
PIA05525
Sol (our sun)
Navigation Camera
Title A Long Way From Home
Original Caption Released with Image This pair of pieced-together images was taken by the Mars Exploration Rover Spirit's left navigation camera looking aft on March 6, 2004. It reveals the long and rocky path of nearly 240 meters (787 feet) that Spirit had traveled since safely arriving at Gusev Crater on Jan. 3, 2004. The lander can still be seen in the distance, but will never be "home" again for the journeying rover. This image is also a tribute to the effectiveness of the autonomous navigation system that the rovers use during parts of their martian drives. Instead of driving directly through the "hollow" seen in the middle right of the image, the autonomous navigation system guided Spirit around the high ridge bordering the hollow. In the two days after these images were taken, Spirit has traveled roughly 60 meters (197 feet) farther toward its destination at the crater nicknamed "Bonneville".
Evidence of a Water-Soaked P …
PIA05495
Sol (our sun)
Microscopic Imager, Navigati …
Title Evidence of a Water-Soaked Past
Original Caption Released with Image This navigation camera image taken by the Mars Exploration Rover Opportunity on the 36th martian day, or sol, of its mission (March 1, 2004) shows the layered rocks of the "El Capitan" area near the rover's landing site at Meridani Planum, Mars. Visible on two of the rocks are the holes drilled by the rover, which provided scientists with a window to this part of the red planet's water-soaked past. Scientists used the rover's microscopic imager and two spectrometers to look at the details of the freshly exposed, clean surfaces created by the rover's rock abrasion tool. Seeing beyond the veil of dust and coatings on the surface of the rock, scientists obtained the best views of the chemical composition of the areas. These data indicated that the rocks are made up of types of sulfate that could have only been created by interaction between water and martian rock. The chemical make-up of the two holes is slightly different, giving scientists an inkling into the geologic history of this area. This history may help to explain the origin of the granular hematite found around the small crater cradling Opportunity and the "El Capitan" rock region. The sulfates and the other chemicals found in the rocks at this location on Mars also occur on Earth, but only rarely. In places like Rio Tinto, Spain, similar minerals are forming today, and microorganisms live and thrive there. Analyzing these two clean surfaces created by the rock abrasion tool proves that Mars had interactions between water and rock over extended amounts of time. Life on Earth is sustained by extended interaction between water and the environment. The fact that scientists have now found evidence of a similar relationship between water and rock on Mars does not necessarily mean that life did develop on Mars, but it does bring the possibility one step closer to reality. Opportunity's wheel tracks can be seen at the bottom left and right sides of this image. The tracks extend to the center of the image, indicating where Opportunity sat when it analyzed the rocks with the instruments on its robotic arm.
Front Windshield after Sol 6 …
PIA05516
Sol (our sun)
Panoramic Camera
Title Front Windshield after Sol 61 Drive
Original Caption Released with Image NASA's Spirit used its panoramic camera to capture this view of the rocky terrain just to the left of straight ahead after finishing a drive to the northeast on March 5, 2004. Some rocks on the horizon may be at the rim of the crater nicknamed "Bonneville," Spirit's destination in coming days.
The Biggest Microscopic Imag …
PIA05523
Sol (our sun)
Microscopic Imager, Rock Abr …
Title The Biggest Microscopic Image Ever
Original Caption Released with Image This is a mosaic of four individual frames taken by the microscopic imager that have been very carefully stitched together to reveal the entire 5-centimeter-diameter (almost 2-inch) hole left on the rock dubbed "Humphrey." The holes were created by the Mars Exploration Rover Spirit's rock abrasion tool. The mosaic, created on March 7, 2004, is the first of its kind of an abraded surface on Mars, and gave scientists their first ever microscopic imager view of the entire drilled area. While it is easy for the panoramic camera and the navigation cameras to fit an area this size into their field of view, the microscopic imager can only capture a portion of the ground area with each image. Scientists are interested in many of the small features on "Humphrey" uncovered by the rock abrasion tool and made visible by the microscopic imager. The sinuous veins within the rock could be evidence that water was trickling through the material while it was deep underground, whereas the dark "age spots" in the center of the hole may be crystals of the mineral olivine.
Spirit Digs In
PIA05577
Sol (our sun)
Navigation Camera
Title Spirit Digs In
Original Caption Released with Image The Mars Exploration Rover Spirit acquired this navigation camera image on the 72nd martian day, or sol, of its mission (March 15, 2004), after digging its wheel into the drift dubbed "Serpent." Creating the commands that would generate this "scar" was not an easy task for rover controllers. Essentially, they had to choreograph an intricate dance for Spirit, maneuvering it up the side of the dune, shimmying its left front wheel a number of times to create the scuff, and then reversing to attain proper positioning for miniature thermal emission spectrometer observations. Before the task was finished, Spirit moved forward to put the scuff within proper reach of the rover's arm. This scar allows the rover's instruments to see below the drift surface, to determine the composition of the materials. Initial results indicate that the drift material is similar to the basaltic sands that have been seen throughout Spirit's journey to the large crater dubbed "Bonneville." The material does not seem to be the same as that inside the crater. Scientists are now looking to answer two questions: Why is the dark sand in the crater not the same as the dark sand in the drift? And why are there two different dark soil-type deposits in such a small place?
Drifts of Dust or Something …
PIA05573
Sol (our sun)
Navigation Camera
Title Drifts of Dust or Something Else?
Original Caption Released with Image While the interior and far walls of the crater dubbed "Bonneville" can be seen in the background, the dominant foreground features in this 180-degree navigation camera mosaic are the wind-deposited drifts of dust or sand. NASA's Mars Exploration Rover Spirit completed this mosaic on sol 71, March 15, 2004, from its newest location at the rim of "Bonneville" crater. Scientists are interested in these formations in part because they might give insight into the processes that formed some of the material within the crater. Thermal emission measurements by the rover indicate that the dark material just below the far rim of this crater is spectrally similar to rocks that scientists have analyzed along their journey to this location. They want to know why this soil-like material has a spectrum that more closely resembles rocks rather than other soils examined so far. The drifts seen in the foreground of this mosaic might have the answer. Scientists hypothesize that these drifts might consist of wind-deposited particles that are the same as the dark material found against the back wall of the crater. If so, Spirit may spend time studying the material and help scientists understand why it is different from other fine-grained material seen at Gusev. The drifts appear to be lighter in color than the dark material deposited on the back wall of the crater. They might be covered by a thin deposit of martian dust, or perhaps the drift is like other drifts seen during Spirit's journey and is just a collection of martian dust. To find out, Spirit will spend some of sol 72 digging its wheels into the drift to uncover its interior. After backing up a bit, Spirit will use the panoramic camera and miniature thermal emission spectrometer to analyze the scuffed area. If the interior material has a similar spectrum to the dark deposit in the crater, then Spirit will most likely stay here a little longer to study the drift with the instruments on its robotic arm. If the material is uniform - that is, dusty all the way down, Spirit will most likely move off to another target.
To 'Bonneville' and Beyond
PIA05581
Sol (our sun)
Mars Orbiter Camera, Thermal …
Title To 'Bonneville' and Beyond
Original Caption Released with Image The route of NASA's Mars Exploration Rover Spirit, from its landing site to its location on sol 72 (March 16, 2004) near the rim of the large crater dubbed "Bonneville" is pictured here on this traverse map. The map consists of data from NASA's Mars Global Surveyor orbiter and NASA's Mars Odyssey orbiter. The varying terrains surrounding Bonneville--crater floor, crater wall, crater rim, crater ejecta (material ejected from the crater) and intercrater plains--are highlighted in different colors.
Mazatzal" Rock on Crater Rim
PIA05599
Sol (our sun)
Navigation Camera
Title Mazatzal" Rock on Crater Rim
Original Caption Released with Image NASA's Spirit took this navigation camera image of the 2-meter-wide (6.6-foot-wide) rock called "Mazatzal" on sol 76, March 21, 2004. Scientists intend to aggressively analyze this target with Spirit's microscopic imager, Moessbauer spectrometer and alpha particle X-ray spectrometer before brushing and "digging in" with the rock abrasion tool on upcoming sols. Mazatzal stood out to scientists because of its large size, light tone and sugary surface texture. It is the largest rock the team has seen at the rim of the crater informally named "Bonneville." It is lighter-toned than previous rock targets Adirondack and Humphrey. Its scalloped pattern may be a result of wind sculpting, a very slow process in which wind-transported silt and sand abrade the rock's surface, creating depressions. This leads scientists to believe that Mazatzal may have been exposed to the wind in this location for an extremely long time. The name "Mazatzal" comes from a mountain range and rock formation that was deposited around 1.2 billion years ago in the Four Peaks area of Arizona.
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